Which graph shows the line of best fit for the data ?

To find a parametrization of the portion of the plane x y z=8 that is contained inside the given cylinders, we need to first find the equations of the cylinders.

a. The equation of the cylinder x2 y2=25 can be written as x2=25-y2. Substituting this into the equation of the plane, we get:

(25-y2)y z = 8

We can now solve for y and z in terms of a parameter t:

y = 5 cos(t), z = 8/(5 cos(t))

Substituting these values back into the equation of the cylinder, we get:

x = ±5 sin(t)

So a possible parametrization of the portion of the plane inside the cylinder x2 y2=25 is:

x = ±5 sin(t), y = 5 cos(t), z = 8/(5 cos(t))

b. The equation of the cylinder y2 z2=25 can be written as z2=25-y2. Substituting this into the equation of the plane, we get:

x y (25-y2) = 8

We can now solve for x and y in terms of a parameter t:

x = 8/(y (25-y2)), y = 5 sin(t)

Substituting these values back into the equation of the cylinder, we get:

z = ±5 cos(t)

So a possible parametrization of the portion of the plane inside the cylinder y2 z2=25 is:

x = 8/(5 sin(t) (25-25 sin2(t))), y = 5 sin(t), z = ±5 cos(t)

In both cases, provided a parametrization of the given portion of the plane.

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The probability that the sample mean would be less than 31,358 miles in a sample of 242 tires if the manager is correct is 0.9925 (or 99.25%).

What is probability?

Probability is a measure of the likelihood of an event occurring. It is a number between 0 and 1, where 0 means the event is impossible and 1 means the event is certain to happen.

We can use the central limit theorem to approximate the distribution of the sample mean. According to the central limit theorem, if the sample size is sufficiently large, the distribution of the sample mean will be approximately normal with a mean of 30,641 and a standard deviation of sqrt(variance/sample size).

So, we have:

mean = 30,641

variance = 14,561,860

sample size = 242

standard deviation = sqrt(variance/sample size) = sqrt(14,561,860/242) = 635.14

Now, we need to calculate the z-score corresponding to a sample mean of 31,358 miles:

z = (sample mean - population mean) / (standard deviation / sqrt(sample size))

= (31,358 - 30,641) / (635.14 / sqrt(242))

= 2.43

Using a standard normal distribution table or calculator, we can find the probability that a z-score is less than 2.43. The probability is approximately 0.9925.

Therefore, the probability that the sample mean would be less than 31,358 miles in a sample of 242 tires if the manager is correct is 0.9925 (or 99.25%).

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The double integral over the region R is zero

To evaluate the given double integral using symmetry, we can exploit the symmetry of the region of integration, R.

The region R is defined as R = {(x, y) | −2 ≤ x ≤ 2, 0 ≤ y ≤ 1}.

Since the limits of integration for y are from 0 to 1, we notice that the integrand 8xy does not depend on y symmetrically about the x-axis. Therefore, we can conclude that the integral over the entire region R is equal to twice the integral over the lower half of R.

So, we can evaluate the double integral as follows:

∬R (8xy / (1 + x⁴)) dA =  [tex]2\int_{-2}^2 \int_0^1\frac{8xy}{1+x^4} dydx[/tex]

Now, let's evaluate the integral in terms of x:

[tex]\int_0^1\frac{8xy}{1+x^4}dy[/tex]

This integral is independent of y, so we can treat it as a constant with respect to y:

=  [tex]\frac{8x}{1+x^4} \int_0^1ydy[/tex]

= [tex]\frac{8x}{1+x^4}[\frac{y^2}{2}]_0^1[/tex]

= (8x / (1 + x⁴)) * (1/2)

= 4x / (1 + x⁴)

Now, we can evaluate the remaining integral with respect to x:

[tex]2\int_{-2}^2\frac{4x}{1+x^4}dx[/tex] =  [tex]8\int_{-2}^2\frac{x}{1+x^4}dx[/tex]

We can evaluate this integral using symmetry as well. Since the integrand (x / (1 + x⁴)) is an odd function, the integral over the entire range [-2, 2] is equal to zero.

Therefore, the double integral over the region R is zero:

∬R (8xy / (1 + x⁴)) dA = 0.

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The value of the following expression is 1 which is option H from the given question.

The expression that is given in the question can be solved just by substituting the values of 'q', 'r', and 's' in the given expression:

We are given the values in the question which are equal to:

q is equal to  -2;

r is equal to -12;

and s is equal to 8.

The expression is given to us is [tex]\frac{-q^2-r}{s}[/tex] we can just put the values in the given expression and solve the expression.

The options which are given to us are:

F. -2

G. -1

H. 1

I. 2

Substituting the value in the expression we get:

[tex]= \frac{-(-2)^2-(-12)}{8}\\\\= \frac{-4+12}{8}\\\\= \frac{8}{8}\\\\= 1[/tex]

Therefore, the value of the following expression is 1 which is option H from the given question.

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The volume of the solid generated by revolving the region bounded by y=√sin6x, y=0, and the x-axis, if 0≤x≤π/6 is π/12 cubic units.

To find the volume of the solid, we can use the method of cylindrical shells. We consider a vertical strip of thickness dx at a distance x from the y-axis. The radius of the cylindrical shell is y=√sin6x and its height is dx. The volume of the cylindrical shell is given by 2πydx, where 2π represents the circumference of the circle.

Substituting y=√sin6x, we get the volume of the shell as 2π(√sin6x)dx. We integrate this expression with limits from 0 to π/6 to get the total volume of the solid. Thus,

Volume = ∫[0,π/6] 2π(√sin6x)dx

      = π/12

Therefore, the volume of the solid generated by revolving the region bounded by y=√sin6x, y=0, and the x-axis, if 0≤x≤π/6 is π/12 cubic units.

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The slope of the tangent line and the instantaneous rate of change of the function at (4,1) are both equal to [tex]4^{(i-1)}[/tex].

To find the slope of the tangent line, we need to find the derivative of the function y = xi + 7 and evaluate it at x = 4.

(a) To find the derivative, we use the power rule:

so, y' [tex]= 4^{(i-1)}[/tex] when x = 4.

(b) The instantaneous rate of change of the function is also given by the derivative at x = 4. So, the instantaneous rate of change is y' [tex]= 4^{(i-1)}[/tex] when x = 4.

Therefore, the slope of the tangent line at (4,1) is [tex]4^{(i-1)}[/tex] and the instantaneous rate of change of the function at (4,1) is also [tex]4^{(i-1)}[/tex].

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The correct answer is (a) there is enough evidence to conclude that age and drink preference is dependent.

Using the formula for the chi-square test of independence, we can calculate the test statistic as:

X² = Σ (O-E)^2 / E

Performing this calculation on the given data, we get:

X² = (50-62.5)²/62.5 + (100-87.5)²/87.5 + (200-250)²/250 + (200-200)²/200 + (50-50)²/50 + (200-150)²/150 + (50-37.5)²/37.5 + (150-162.5)²/162.5 + (200-250)²/250 + (50-50)²/50 = 34

Using a chi-square distribution table with (2-1)*(4-1)=3 degrees of freedom and a significance level of 0.05, the critical value is 7.815.

Since the calculated test statistic of 34 is greater than the critical value of 7.815, we can reject the null hypothesis of independence and conclude that there is enough evidence to support the alternative hypothesis that age and drink preference are dependent.

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The equation of the tangent plane to the surface x = h(y, z) at the point (-3, 1, -2) is: -3(x + 3) - 5(y - 1) + (z + 2) = 0.

To find the equation of the tangent plane to the parametrized surface x = h(y, z) at the point (x₀, y₀, z₀) = (-3, 1, -2) with the given partial derivatives, follow these steps:
Step 1: Calculate the gradient vector
Given that ∂h/∂y(1, -2) = -3 and ∂h/∂z(1, -2) = -5, the gradient vector of h at (1, -2) is:
∇h(1, -2) = <-3, -5>.

Step 2: Use the gradient vector to find the normal vector
The gradient vector represents the normal vector of the tangent plane:
Normal vector = <-3, -5, 1> (with the coefficient of x being 1, as required).

Step 3: Write the equation of the tangent plane using the point-normal form
The equation of the tangent plane in point-normal form is:
A(x - x₀) + B(y - y₀) + C(z - z₀) = 0,
where (A, B, C) is the normal vector and (x₀, y₀, z₀) is the point on the plane.

Plugging in the values, we get:
-3(x - (-3)) - 5(y - 1) + 1(z - (-2)) = 0.

So, the equation of the tangent plane to the surface x = h(y, z) at the point (-3, 1, -2) is:
-3(x + 3) - 5(y - 1) + (z + 2) = 0.

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Equation y=2.4x+2.6 is used to find the length of the age based on its ages

We have to find the equation of the length of Alex's pet lizard is changing

over time.

Slope = 9.8-7.4/3-2

=2.4

Now let us find the y intercept

5=2.4(1)+b

5-2.4=b

2.6=b

Hence, equation y=2.4x+2.6 is used to find the length of the age based on its ages

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The general solution of the differential equation is: r(t) = ⟨x(t),y(t),z(t)⟩ = ⟨(4t − (5/2)t^2), (5t^2), C⟩

The differential equation given is r ′(t)=(4−5t)i+10tj, where r(t) represents the position vector of a particle moving in a plane.

To find the general solution of this differential equation, we need to integrate both sides with respect to t.

Integrating the x-component of r ′(t), we get:
r(t) = ∫(4−5t) dt i + ∫10t dt j + C
r(t) = (4t − (5/2)t^2)i + (5t^2)j + C

where C is a constant of integration.

Therefore, the general solution of the differential equation is:
r(t) = ⟨x(t),y(t),z(t)⟩ = ⟨(4t − (5/2)t^2), (5t^2), C⟩

where C is an arbitrary constant.

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Given a time impact of 3 months and a likelihood of 0.40, the risk consequence time (rt) is calculated to be 1.2 months is False

The formula for calculating Risk Consequence Time (RCT) is:

RCT = Time Impact x Likelihood

Using the values given in the question:

RCT = 3 months x 0.40 = 1.2 months

Therefore, the calculated RCT is 1.2 months, which is the same as the value given in the question. So the statement is true.

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Jack ate 1/10 cup more strawberries than Leo

The problem states that Leo ate 3/5 cup of strawberries, and Jack ate 7/10 cup of strawberries. We need to find out how much more Jack ate than Leo.

To solve this problem, we first need to find a common denominator for the two fractions. The denominator is the bottom number of a fraction, which represents the total number of equal parts that make up a whole.

The smallest common denominator for 5 and 10 is 10. We can convert the fraction 3/5 into an equivalent fraction with a denominator of 10 by multiplying both the numerator and denominator by 2. This gives us 6/10.

Now, we have two fractions with the same denominator: 6/10 and 7/10. To find out how much more Jack ate than Leo, we can subtract the fraction representing what Leo ate from the fraction representing what Jack ate:

7/10 - 6/10 = 1/10

Therefore, Jack ate 1/10 cup more strawberries than Leo did.

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The general solution of the resulting exact differential equation is y^2 + e^(2x) = C.

To find the function N(x,y), we need to use the condition that the differential equation is exact, which means that there exists a function f(x,y) such that:

df/dx = 2x^2y + 2e^(2x)y^2 + 2x

df/dy = N(x,y)

Taking the partial derivative of df/dx with respect to y and df/dy with respect to x, we get:

∂(2x^2y + 2e^(2x)y^2 + 2x)/∂y = 2x^2 + 4e^(2x)y

∂N(x,y)/∂x = 2x^2 + 4e^(2x)y

Since these partial derivatives are equal, N(x,y) can be found by integrating one of them with respect to x:

N(x,y) = ∫(2x^2 + 4e^(2x)y) dx = (2/3)x^3 + 2e^(2x)yx + C(y)

To find C(y), we use the condition that N(0,y) = 3y, which gives:

C(y) = N(0,y) - (2/3)0^3 = 3y

Substituting this expression for C(y) into the equation for N(x,y), we get:

N(x,y) = (2/3)x^3 + 2e^(2x)yx + 3y

Next, we need to find the general solution of the resulting exact differential equation.

Since the equation is exact, we know that the solution can be obtained by integrating f(x,y) = C, where C is a constant. Using the function N(x,y) that we found, we have:

df/dx = 2x^2y + 2e^(2x)y^2 + 2x

f(x,y) = ∫(2x^2y + 2e^(2x)y^2 + 2x) dx = (2/3)x^3y + 2e^(2x)y^2 + x^2 + g(y)

Taking the partial derivative of f(x,y) with respect to y and equating it to N(x,y), we get:

∂f(x,y)/∂y = (4e^(2x)y + g'(y)) = (2/3)x^3 + 2e^(2x)y + 3y

Solving for g'(y), we get:

g'(y) = (2/3)x^3 + 4e^(2x)y + 3y

Integrating g'(y) with respect to y, we get:

g(y) = (1/3)x^3y + 2e^(2x)y^2 + (3/2)y^2 + C

Substituting this expression for g(y) into the equation for f(x,y), we get:

f(x,y) = (2/3)x^3y + 2e^(2x)y^2 + x^2 + (1/3)x^3y + 2e^(2x)y^2 + (3/2)y^2 + C

Simplifying this expression, we get:

f(x,y) = (4/3)x^3y + 4e^(2x)y^2 + x^2 + (3/2)y^2 + C

Therefore, the general solution of the exact differential equation is: (4x^2y + 2e^(2x)y^2 + 3y^2 = C)

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Average speed is a measure of the distance covered by an object in a certain amount of time. It is usually expressed in units of distance per unit time. Average speed = distance/time . So, the average speed of the bus traveling to Madison, WI is 50 km/hour.

Calculate the average speed of an object, we need to know the distance it has traveled and the time taken to cover that distance. The formula for calculating average speed is distance divided by time.

Average speed is an important concept in physics and is used in many real-life situations. For example, it is used in calculating the speed of vehicles, airplanes, and trains. It is also used in sports to calculate the speed of athletes running, cycling, or swimming. Understanding the concept of average speed is essential for solving problems that involve distance and time.

To calculate the average speed of the bus from the given information, we can use the formula:

Average speed = distance/time

Here, the distance is 500 km and the time taken is 10 hours.

Substituting the values in the formula, we get:

Average speed = 500 km/10 hours

Simplifying this, we get:

Average speed = 50 km/hour

Therefore, the average speed of the bus is 50 km/hour.

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Answer: Parallel

Step-by-step explanation:

if two secanys of a circle are made them they cut off congruent arcs

The magnification (m) can be expressed as m = -s/(f-s) in terms of f and s.

The ratio of an object's perceived size to its actual size is known as its magnification. It is frequently used to refer to the expansion of an image created by a lens or other optical system in optics and microscopy. Magnification can be quantified as a straightforward ratio or as an increase in percentage.

To find the magnification (m) in terms of f and s, we can follow these steps:

1. Given the lens formula: 1/s + 1/s' = 1/f, where s is the object distance, s' is the image distance, and f is the focal length.

2. We need to express s' in terms of f and s. To do this, we can rearrange the lens formula to isolate s':
 [tex]1/s' = 1/f - 1/s[/tex]

3. Next, we can find the reciprocal of both sides to get s':
 [tex]s' = 1/(1/f - 1/s)[/tex]

4. Now we have the magnification formula: m = -s'/s

5. Substitute the expression for s' from step 3 into the magnification formula:
  [tex]m = -[1/(1/f - 1/s)]/s[/tex]

6. Simplify the expression to obtain the magnification in terms of f and s:
[tex]m = -s/[(f-s)][/tex]

So, the magnification (m) can be expressed as m = -s/(f-s) in terms of f and s.

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In a simple baseline/offset model y = b0 + b1*x with a dummy-variable predictor x, the coefficient b1 may be interpreted as the difference in the mean value of y between the two groups represented by the dummy variable.

In a simple baseline/offset model with a dummy-variable predictor x, the coefficient b1 represents the difference in the mean value of the response variable y between the two groups represented by the dummy variable. When the dummy variable takes the value of 0, it represents one group, and when it takes the value of 1, it represents the other group.

The coefficient b1 indicates the average change in y when moving from one group to the other, while holding all other variables constant. Therefore, it provides insights into the effect or impact of the group represented by the dummy variable on the response variable.


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To maximize utility while purchasing diamonds and water, a consumer should follow option 4: equating the marginal utility per dollar spent on each good.
To achieve this, the consumer should follow these steps:
1. Calculate the marginal utility (MU) of each good, which is the additional satisfaction gained from consuming one more unit of that good.
2. Calculate the price per unit of each good.
3. Divide the marginal utility of each good by its respective price to obtain the marginal utility per dollar (MU/$) for each good.
4. Compare the marginal utility per dollar for diamonds and water, and adjust the consumption of each good until the MU/$ for both goods is equal.
By equalizing the marginal utility per dollar spent on each good, the consumer ensures that they are getting the most satisfaction from their expenditure, as each additional dollar spent on either good yields the same amount of additional utility. This is the most efficient allocation of resources to maximize overall utility.

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Answer: Mean: 20, Median: 29, Mode: 14, Range: 16

Step-by-step explanation:

To know the mean, you have to add all the numbers and then divide it by how many numbers there are. So 13 + 21 + 14 + 29 + 26 + 14 + 23 is 140, then we divide 140 by how many numbers there are which in this case is 7 So 140 / 7 is 20. The median is the middle number which is 29. Mode is the most common number that shows up the most which would be 14. Hopefully this helps! :) P.S since you said you forgot the range, to define range you need to subtract the lowest value from the highest value, so the lowest value is 13 and the highest is 29. So if you subtract 13 from 29 you get 16.

To find the displacement of the particle at time t, we need to integrate its velocity function v(t) over the interval [0, t]:

s(t) = ∫v(t) dt

s(t) = ∫(t^2 - 2t - 24) dt

s(t) = (1/3)t^3 - t^2 - 24t + C

where C is the constant of integration.

To find the value of C, we need to use the initial condition that the particle is at the position s(0) = 0. Substituting t = 0 and s(0) = 0 into the above equation, we get:

0 = 0 + 0 - 0 + C

C = 0

Therefore, the displacement of the particle at time t is given by:

s(t) = (1/3)t^3 - t^2 - 24t

To find the displacement over the entire interval [0, 6], we can substitute t = 6 into the above equation:

s(6) = (1/3)(6^3) - 6^2 - 24(6)

s(6) = 36 - 36 - 144

s(6) = -144

Therefore, the displacement of the particle over the interval [0, 6] is -144 meters.

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Initially, when a bank has a required reserve ratio of 20%, and no excess reserves, if $10,000 is deposited into the bank, the bank will be required to hold 20% of the deposit as required reserves, which amounts to $2,000.

The remaining $8,000 can be used to make loans or acquire additional assets, such as bonds.

The required reserve ratio is the percentage of deposits that a bank is required to hold in reserve, either in cash or on deposit with the Federal Reserve Bank. The required reserve ratio is set by the Federal Reserve and is used as a tool to regulate the money supply and control inflation.

When a bank receives a deposit, it must keep a portion of that deposit in reserve to ensure that it has enough cash on hand to meet the demands of its customers who wish to withdraw their money.

In this scenario, the bank will hold $2,000 in reserves and can use the remaining $8,000 to make loans or acquire additional assets. This process is known as the money multiplier effect, where the original deposit is multiplied through the banking system as it is loaned out and deposited into other accounts. The money multiplier effect can be used to increase the money supply and stimulate economic growth.

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The total amount of ice cream in cups is 32 cups (2 gallons of chocolate ice cream is equal to 32 cups, and 2 quarts of vanilla ice cream is equal to 8 cups). Since there are 16 half-cups in one cup, the total amount of ice cream can make 512 half-cup servings.

To find the answer, we first need to convert the given measurements to cups. Two gallons of ice cream is equal to 8 quarts, and since 1 quart is equal to 4 cups, then two gallons of ice cream is equal to 32 cups. Two quarts of vanilla ice cream is equal to 8 cups. Thus, the total amount of ice cream is 32 + 8 = 40 cups.

Since we want to know the number of half-cup servings, we need to multiply the total cups by 2 (since there are 2 half-cups in one cup) to get the total number of half-cup servings. Thus, the answer is 40 x 2 x 2 = 160 half-cup servings. Therefore, there are 160 half-cup servings of ice cream that can be served at the party.

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The probability of producing at least 232,000 barrels is 0.5.

The standard normal distribution table, also known as the z-table, is a table that provides the probabilities for a standard normal distribution, which has a mean of 0 and a standard deviation of 1.

The table lists the probabilities for values of the standard normal distribution between -3.49 and 3.49, in increments of 0.01.

Here we have

Daily output of marathon's garyville, louisiana, refinery is normally distributed with a mean of 232,000 barrels of crude oil per day with a standard deviation of 7,000 barrels.

Since the daily output of the refinery is normally distributed,

we can use the standard normal distribution to calculate the probability of producing at least 232,000 barrels.

First, we need to standardize the value using the formula:

=> z = (x - μ) /σ

where:

x = value we want to calculate the probability for (232,000 barrels)

μ = mean (232,000 barrels)

σ = standard deviation (7,000 barrels)

=> z = (232000 - 232000) / 7000 = 0

Next, we look up the probability of producing at least 0 standard deviations from the mean in the standard normal distribution table.

This value is 0.5.

Therefore,

The probability of producing at least 232,000 barrels is 0.5.

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To find the second partial derivatives of t = e^(-9r)cos(θ), we first need to find the first partial derivatives:

∂t/∂r = -9e^(-9r)cos(θ)

∂t/∂θ = -e^(-9r)sin(θ)

Now, we can find the second partial derivatives:

∂²t/∂r² = ∂/∂r (-9e^(-9r)cos(θ)) = 81e^(-9r)cos(θ)

∂²t/∂θ² = ∂/∂θ (-e^(-9r)sin(θ)) = -e^(-9r)cos(θ)

∂²t/∂r∂θ = ∂/∂θ (-9e^(-9r)cos(θ)) = 9e^(-9r)sin(θ)

So the second partial derivatives are:

∂²t/∂r² = 81e^(-9r)cos(θ)

∂²t/∂θ² = -e^(-9r)cos(θ)

∂²t/∂r∂θ = 9e^(-9r)sin(θ)

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Answer:

weak positive

Step-by-step explanation:

look at image

The depth is decreasing at a rate of about 70.7 feet per mile in the direction of the buoy. The depth of the lake beneath the boat is decreasing at a rate of about 4.27 feet per hour as the boat moves towards the buoy at a rate of 4 mph.

(a) To find the rate of change of depth with respect to distance in the direction of the buoy, we need to find the gradient of the depth function at the point (x,y) = (1,-2) which is the position of the rowboat relative to the buoy. The gradient vector is given by:

∇h(x,y) = (d/dx)h(x,y) i + (d/dy)h(x,y) j

Taking partial derivatives of h(x,y) with respect to x and y:

(d/dx)h(x,y) = -60x

(d/dy)h(x,y) = -40y

Substituting x=1 and y=-2:

(d/dx)h(1,-2) = -60(1) = -60

(d/dy)h(1,-2) = -40(-2) = 80

So the gradient vector at (1,-2) is:

∇h(1,-2) = -60 i + 80 j

The rate of change of depth with respect to distance in the direction of the buoy is the dot product of the gradient vector and a unit vector in the direction of the buoy, which is:

|-60i + 80j| cos(135°) = 70.7 feet per mile (approximately)

(b) To find the rate of change of depth with respect to time as the boat moves towards the buoy at a rate of 4 mph, we need to use the chain rule. Let D be the distance between the boat and the buoy, and let t be time. Then:

d/dt h(x,y) = (d/dD)h(x,y) (dD/dt)

From the Pythagorean theorem, we have:

D^2 = x^2 + y^2

Taking the derivative of both sides with respect to time:

2D (dD/dt) = 2x (dx/dt) + 2y (dy/dt)

Substituting x=1, y=-2, and dx/dt = 4 (since the boat is moving towards the buoy at 4 mph):

2(√5) (dD/dt) = 4 + (-8d/dt) = 4 - 8h(1,-2)

Solving for d/dt h(1,-2):

d/dt h(1,-2) = (2/√5) (dD/dt) + 4/√5 - 4h(1,-2)

To find dD/dt, we use the fact that the boat is moving towards the buoy at a rate of 4 mph, so:

dD/dt = -4/√5 (since the distance is decreasing)

Substituting this into the previous equation and evaluating h(1,-2):

d/dt h(1,-2) = -16/5 - 4h(1,-2)

d/dt h(1,-2) ≈ -4.27 feet per hour

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A hamburger has 350 calories. So an order of fries has 320 calories, and a hamburger has 50 + 320 = 370 calories.

To solve the problem, you can use algebraic equations. Let x be the number of calories in an order of fries. Then, the number of calories in a hamburger is 50 + x. The problem tells us that 2 hamburgers and 3 orders of fries have a total of 1700 calories. This can be written as:

2(50 + x) + 3x = 1700

Simplifying and solving for x, we get:

100 + 2x + 3x = 1700

5x = 1600

x = 320

So an order of fries has 320 calories, and a hamburger has 50 + 320 = 370 calories.

Explanation:

To solve the problem, we need to set up an equation that relates the number of hamburgers and fries to the total number of calories. We can use algebraic variables to represent the unknown quantities. Let x be the number of calories in an order of fries, and let y be the number of calories in a hamburger.

The problem tells us that each hamburger has 50 + x more calories than each order of fries. This means that the number of calories in a hamburger is equal to the number of calories in an order of fries plus 50:

y = x + 50

We also know that 2 hamburgers and 3 orders of fries have a total of 1700 calories. This can be written as:

2y + 3x = 1700

Now we can substitute the first equation into the second equation to eliminate y:

2(x + 50) + 3x = 1700

Simplifying and solving for x, we get:

2x + 100 + 3x = 1700

5x = 1600

x = 320

So an order of fries has 320 calories. We can substitute this value back into the first equation to find the number of calories in a hamburger:

y = x + 50

y = 320 + 50

y = 370

Therefore, a hamburger has 370 calories.

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The time taken by her for haircut is 21 minutes and to color is 50 minutes.

Assume that

Haircut takes   = x minutes

To Color takes = y minutes

According to the question

The expression for time be,

3x + 4y = 263 ...(i)

The expression for time be,

x + y = 71  ...(ii)

Apply elimination method to solve it,

After equation(i) - 3x(ii) we get,

y = 50 minutes

Now plug it into (ii) we get,

x = 21 minutes.

Hence,

Haircut takes   = 21 minutes

To Color takes = 50 minutes

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5.

4x-6 = 90

4x = 84

x = 21 degrees

6.

The sum of all 3 angles in that triangle = 180.

We know that the right angle = 90.

So the other 2 angles = 90.

(2x+53) + (5x+2) = 90

Combine like terms

7x + 55 = 90

7x = 35

x = 5 degrees