create the following matrices with the help of the matrix generation functions eye , ones, diag and triu. see the on-line help on these functions if required (i.e. help eye). do not enter the matrices explicitly. each matrix should be generated with a single command. m

21.931% of Nicole's monthly pay goes to rent.

percent = (638/2900) x 100

percent = 0.21931 x 100

percent = 21.931%

Answer: 602.88 square feet

Equation for surface area of cylinder:

A = 2πrh+2πr^2

r = 6, because radius is half of the diameter

h = 10

A = 2(3.14)(6)(10) + 2(3.14)(6)^2

A = 376.8 + 226.08

A = 602.88 square feet

The equation that matches the hanger diagram is 2x=5

From the question, we have the following parameters that can be used in our computation:

The hanger diagram added as an attachment

From the diagram, we hav

Left = x + x

Right = 1 + 1 + 1 + 1 + 1

This gives

Left = 2x

Right = 5

So, we have

2x = 5

hence, the equation is 2x = 5

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The general form of exponential formula is y = a * b^x, the  population of the city in 2018 6.058454 million.(c) the population of the city be 8 million19.38548963 years.

In this problem, a = 5.21 million and b = 1 + 2.86%/100 = 1.0286.

In 2012, the population was 5.89 million.

In 2018, the population will be 5.89 * 1.0286 ^ (2018 - 2012) = 5.89 * 1.0286 ^ 6 = 6.058454 million.

To find when the population will be 9 million, your equation becomes:

9 = 5.21 * 1.0286 ^ x divide both sides of this formula by 5.21 to get:

9/5.21 = 1.0286 ^ x take the log of both sides of the equation to get:

log(9/5.21) = log(1.0286^x) since log(1.0286^x) = x * log(1.0286), the equation becomes:

log(9/5.21) = x * log(1.0286)

Divide both sides of this equation by log(1.0286) to get:

log(9/5.21) / log(1.0286) = x

Solve for x to get:

x = 19.38548963.

Confirm by replace x in the original equation to get:

9 = 5.21 * 1.0286 ^ 19.38548963 becomes 9 = 9.

This confirms the value of x is good.

The population will grow to 9 million in 19.38548963 years.

To find when the population will double, the equation becomes:

2 = 1 * 1.0286 ^ x

Simplify to get:

2 = 1.0286 ^ x

Take the log of both sides of this equation to get:

log(2) = log(1.0286 ^ x)

Since log(1.0286 ^ x) = x * log(1.0286), this equation becomes:

log(2) = x * log(1.0286)

solve for x to get:

x = log(2) / log(1.0286) = 24.5808602.

to confirm this is true, replace x in the original equation to get:

2 = 1.0286 ^ 24.5808602 which becomes 2 = 2.

This confirms the value of x is true.

The population will double in 24.5808602 years.

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The inequality that best represent the expression is x ≥ 12

A relationship between two expressions or values that are not equal to each other is called 'inequality. ' So, a lack of balance results in inequality.

The sign for greater than is >

The sign for less than <

The sign for greater than or equal to is ≥

The sign for less than or equal to is ≤

There must be at least 4 people in the group. This means that a group member must greater or equal to 4. There are 3 groups.

Represent the value of the number of friends by x

then, x/3 ≥ 4

therefore x ≥ 12

this means that the number of friends must be greater or equal to 12

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The average salary for college graduates is 53% higher than that of high school graduates.

Mathematically, percentage increase can be calculated by using this mathematical expression:

Percentage increase = [Final value - Initial value]/Initial value × 100

Substituting the given parameters into the percentage increase formula, we have the following;

Percentage increase = [62,047 - 40,626]/40,626 × 100

Percentage increase = 21,421/40,626 × 100

Percentage increase = 0.527 × 100

Percentage increase = 52.7 ≈ 53%.

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Answer:  -1 7/20

Step-by-step explanation:

hope this helps

Standard Deviation, σ: 3.152

The term "standard deviation" (or "σ") refers to a measurement of the data's dispersion from the mean. A low standard deviation implies that the data are grouped around the mean, whereas a large standard deviation shows that the data are more dispersed.

Given, Data set: 8, 7, 10, 10, 17, 13, 7, 10

variance:

σ² = Σ(xi - μ)²/N

σ²=  ((8 - 10.25)² + … + (10 - 10.25)²)/8

σ²= 79.5/8

σ²  =9.9375

σ = √9.9375

σ = 3.1523

The sampling mean most likely follows a normal distribution. In this case, the standard error of the mean can be calculated using the following equation:

σ =  σ/√N

σ = 1.114

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The height in meters is 19.75 meters

The rocket hit the ground after 8.06 sec

The maximum height in seconds is 81 meters

we would have to use 0.5 as the value for t in the formula

h(t) = -5t² + 40t + 1

h(0.5) = -5(0.5)² + 40(0.5) + 1

= -1.25 + 20 +1

= 19.75

To find when the rocket hit the ground, we need to find when the height of the rocket is equal to 0. So we will set h(t) = 0 and solve for t:

-5t² + 40t + 1 = 0

by using Quadratic equation formula we get t = (-b ± √(b²-4ac))/2a

we solve this using the calculator

so t1 = (40 + 40.6)/10 = 80.6/10 = 8.06 sec

Since the time of the rocket hit the ground should be positive, so the rocket hit the ground after 8.06 seconds after launch.

To find the rocket's maximum height, we need to find the vertex of the parabola. The vertex of the parabola can be found by using the formula x = -b/2a,

where x is time and a, b, c are from equation.

so, x = -b/2a

= -40/2*-5

= -40/ -10

= 4 sec

and by using the above formula of x, we get the

h(4) = -5(4)² + 40(4) + 1

= -80 + 160 + 1

= 81 meters

Therefore, the rocket's maximum height is 81 meters.

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Answer:

I believe it's BC

Step-by-step explanation:

I can't really give an explanation but I've done this before and struggled but learned it, hope I'm right

A solution of the first order IVP consisting of this differential equation is   y = [tex]\frac{1}{x^2-5}[/tex] and the domain of y considered as a function over the reals is (-∞, -√5) ∪ (-√5, +√5) ∪ (√5, ∞).

We have to find the domain of y considered as a function over the reals.

The differential equation is  y' + 2x[tex]y^2[/tex] = 0

The solution of the given differential equation is y = 1/([tex]x^2[/tex] + c)......(1)

The given initial value; y(-3) = 1/4

Replace the initial value in the first-order DE solution provided. To obtain the equation for y, locate the constant c and then re-substitute 'c'.

Now put x = -3 and y(-3) = 1/4 in equation 1

[tex]\frac{1}{4}=\frac{1}{(-3)^2+c}[/tex]

[tex]\frac{1}{4}=\frac{1}{9+c}[/tex]

9+c = 4

Subtract 9 on both side, we get

c = -5

Now substitute the value of c again in equation 1

y = [tex]\frac{1}{x^2-5}[/tex]

To find the domain of y we can write it as

y = [tex]\frac{1}{(x)^2-(\sqrt{5})^2}[/tex]

Now the simplified form is

y = [tex]\frac{1}{(x-\sqrt{5})(x+\sqrt{5})}[/tex]

Now the domain of y over R is

(-∞, -√5) ∪ (-√5, +√5) ∪ (√5, ∞).

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The complete question is:

y = 1/([tex]x^2[/tex] + c) is a one parameter family of solutions of the first order DE y' + 2x[tex]y^2[/tex] = 0. Find a solution of the first order IVP consisting of this differential equation and the given initial condition.

y(-3) = 1/4

Find the domain of y considered as a function over the reals. (Enter your answer using interval notation.)

The equation will be 4(x + 2) = 40. Then the value of the variable 'x' will be 8.

The sum of all the sides of the square or the product of the four and the edge length of the square is known as the perimeter of the square. For a square with a side length of a unit, we get:

Perimeter of the square = 4a unit

The perimeter of the square is 40 cm. And the sides length of the square is (x + 2) cm. Then the perimeter of the square is given as,

4(x + 2) = 40

Simplify the equation, then we have

4(x + 2) = 40

(x + 2) = 10

x = 10 - 2

x = 8

The equation will be 4(x + 2) = 40. Then the value of the variable 'x' will be 8.

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The complete question is given below.

Solve it to find the value of x. Also, find the actual length of each square perimeter of the square is 40 cm and side length is (x + 2).

Answer:

490 adults at the museum!

hope that helps :)

mark brainly please.

Answer:

1/2

Step-by-step explanation:

Triangle XYZ has endpoints (0,0) (0,8) and (4,6)

Triangle X'Y'Z' has endpoints (0,0) (0,4) and (2,3)

As you can see, all the coordinates from Triangle XYZ are halved to get the coordinates of Triangle X'Y'Z', so the scale factor is 1/2.

The center of mass is (2,1) since m1 has a mass of 10 and is located at (4,2). The center of mass is the average of the locations of the masses, weighted by the masses.

We can calculate the center of mass of these two spheres by using the formula c = (m1*L1 + m2*L2) / (m1 + m2). m1 is the mass of the first sphere, and L1 is the location of the first sphere. In this case, m1 is 10, and L1 is (4,2). We assume that m2 is 0 and L2 is (0,0). Plugging these values into the formula, we get c = (10*(4,2) + 0*(0,0)) / (10 + 0), which is (2,1).  This is because the center of mass is the average of the locations of the masses, weighted by the masses. In this case, the only mass is 10, and it is located at (4,2). Therefore, the center of mass is simply (4,2) since it is the only mass that contributes to the calculation.

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The complete question: find the center of mass (relative to (0,0)) for the spheres with the following masses and locations: m1 = 10, L1 = ( 4,2)

The equivalent expression for 1/2(2a - 6b+ 8) will be a - 3b + 4

Expressions that are equivalent do the same thing even though they have different appearances. When we enter the same value(s) for the variable, two algebraic expressions that are equivalent have the same value (s).

When two expressions can be reduced to a single third expression or when one of the expressions can be written in the same way as the other, they are said to be equivalent. When values are substituted for the variable and both expressions yield the same result, you can also tell if two expressions are equivalent.

This will be:

1/2(2a - 6b+ 8)

= a - 3b + 4

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Complete question

Distribute to create an equivalent expression with the fewest symbols possible 1/2(2a - 6b+ 8) =

These points (-1,-8), (0,-6), (1,-4), and (2,-2) are the set of ordered pairs made up of points on the graph of the function y = 2x – 6.

What is the linear system?

A linear system is one in which the parameter in the equation has a degree of one. It might have one, two, or even more variables.

The linear function is given below.

y = 2x – 6

The points (-1,-8), (0,-6), (1,-4), and (2,-2) lies on the equation.

As when the put the given points in the equation , than it satisfies the given condition.

Hence, these points (-1,-8), (0,-6), (1,-4), and (2,-2) are the set of ordered pairs made up of points on the graph of the function y = 2x – 6.

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A binomial setting is one in which there are a fixed number of trials, the outcome in each trial is either a success or a failure, the probability of success or failure is known, and the probability doesn't change from trial to trial.

A binomial setting is one in which we know the number of repetitions (n=20), the outcome of each trial can be considered either a success or a failure (p=0.4, q=1-p=0.6), and the probability of success or failure of any trial does not change from trial to trial (p=0.4, q=1-p=0.6).

For example, if we toss a coin 20 times, and we know the probability of success (head) is 0.4 and the probability of failure (tail) is 0.6, then this is a binomial setting. We can calculate the probability of getting exactly 10 heads in 20 tosses using the binomial formula: P(X=10) = (20C10) * (0.4^10) * (0.6^10) = 0.1775.

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Answer:

$10,224.30

Step-by-step explanation:

a) 0.04550 has four significant figures.

b) 5.0003 has four significant figures.

c) 1.000 x [tex]10^5[/tex] has four significant figures.

d) 0.00002 has one significant figure.

e) 1.01 x [tex]10^{-2}[/tex] has three significant figures.

f) 7 has one significant figure.

Significant figures are the digits in a number that are known with certainty, including one uncertain digit. In general, any non-zero digit is considered a significant figure, and zeros between non-zero digits are also significant figures.

Leading zeros before the first non-zero digit and trailing zeros after the last non-zero digit are not considered significant figures.

For example, in the given number 5.006, there is four significant number,

since all zeros between integers are always significant.

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The surface area of the container is 62 square inches.

The correct option is D.

In three-dimensional space,

a prism is a polyhedron where two ends are similar.

Given:

A student draws the net below to show the dimensions of a container that is shaped like a right rectangular prism.

We have H = 2 inches

L = 5 inches

W = 3 inches

Surface area of the rectangular prism,

A = 2(W×L + H×L + H×W)

A = 2(3×5+2×5+2×3)

A = 2(15+10+6)

A = 2(31)

A = 62 square inches

Therefore, the surface area is 62 square inches.

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Answer:

c (72)

Step-by-step explanation:

since there are four wheels to every bike, you just have to multiply the number of bikes to the amount of wheels per bike. given this, 18 * 4=72.

The approximate length of the pendulum is 2 feet.

Two or more expressions with an Equal sign is called as Equation.

Given that period (T) of a pendulum is related to the length (L) of the pendulum and

acceleration due to gravity (g) by the formula T=2π√L/g.

g=32 ft/s2

t=1 sec

We need to find L

1=2×3.14√L/32

32=6.28√L

32/6.28=√L

5.09=√L

Square on both sides

L=25.9 inches

L=2 feet because 12 inches = 1ft.

Hence, the approximate length of the pendulum is 2 feet.

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The solution of the equation x/6 + 2 = 15 will be 78 by using the property of subtraction and multiplication of equality.

The allocation of weights to the important variables that produce the calculation's optimum is referred to as a direct consequence.

The definition of simplicity is making something simpler to achieve or grasp while also making it a little less difficult.

The equation is given below.

x/6 + 2 = 15

Subtract 2 on both sides. Then we have

x / 6 + 2 - 2 = 15 - 2

x / 6 = 13

Multiply the equation by 6, then we have

x/6 × 6 = 6 × 13

x = 78

The solution of the equation x/6 + 2 = 15 will be 78 by using the property of subtraction and multiplication of equality.

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Work Shown:

A = P*(1+r*t)

A = 5000*(1+0.12*30/12)

A = 6500

The amount $6500 is what you pay back

Divided over 30 months gives 6500/30 = 216.67 dollars per month.

Side note: The value t is in years, so 30 months = 30/12 years.

Answer:

So, there are 5,280 feet in a mile, so you will want to find out how many times 5, 280 will go into 23,760. To do this, you will divide.

23,760/5,280 = 4.5

There are 4.5 or 4 1/2 miles in 23,760 feet!

Step-by-step explanation:

Hope it helps! =D

Answer:hie

hie

Step-by-step explanation:hie

Answer:

Option 3. Look at my screenshot so you can see the circled one

Step-by-step explanation:

The reasoning behind this is slope is rise over run (rise/run)
Graph 3 goes down 3 so -3 and runs 1 over so (-3/1)
This is simplified as -3.

I hope this helps you out :D

Answer:

v^2+4v+4

Step-by-step explanation:

To do this we have to know that (2+v)^2 is the same as (2+v) (2+v)

Next, use the distributive property and add like variables to get the final answer of v2+4v+4

I hope this was able to help you out :D