Select ALL the correct answers.
The graph shows a linear relationship.



Select all the true statements.

A right triangle with its hypotenuse along the line from (4,2) to (8,4) has legs measuring 4 units and 2 units.
A right triangle with its hypotenuse along the line from (2,1) to (4,2) has legs measuring 3 units and 1 unit.
A right triangle with its hypotenuse along the line from (2,1) to (4,2) has legs measuring 2 units and 1 unit.
A right triangle with its hypotenuse along the line from (2,1) to (6,3) has legs measuring 4 units and 1 unit.
A right triangle with its hypotenuse along the line from (4,2) to (8,4) has legs measuring 4 units and 3 units.

The error that Bobby most likely made in verifying if the relation is a function is given as follows:

C. Bobby drew the incorrect arrow diagram. The correct arrow diagram of the relation is a function. Bobby's arrow diagram is not a function.

A relation represents a function if each value of the input is mapped to only one value of the output.

The ordered pairs from this data-set are given as follows:

(​4,​5), ​(​9,​15), ​(14​,​22), ​and (​18,​37).

The input and the output for the pairs are given as follows:

Each value of the input is mapped to only one value of output, hence the relation represents a function.

However, Bobby made a mistake, in mapping the point (9, 15), as he mapped an input of 14 to an output of 9, and thus it would not represent a function. Hence the correct statement is given by option C.

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Answer:

a. The correlation coefficient of the data is 0.817.

b. Yes, there is a correlation between the heights of daughters and mothers. The correlation coefficient of 0.817 indicates a strong positive correlation, meaning that as the height of the mother increases, the height of the daughter also increases.

The correct option is the standard deviations of the variables.

What is correlation?

Any statistical relationship between two random variables or bivariate data, whether causal or not, is referred to in statistics as correlation or dependence.

Correlation is a term used to describe the linear relationship between two entities. When using a correlation tool, the variables must be present in quantities of two or more to test their relationship (degree of association).

In order to scale the measurement between two variables connected to a similar sample, the standard deviation measures dispersion.

The variables' standard deviations are the best choice as a result.

Option involving the standard errors of the variables is incorrect because standard error, which stands for standard deviation, determines the relationship between dependent and independent variables.

Option involving the coefficients of variation of two variables is incorrect because the coefficient expressing standard deviation and mean ratio determines how much variation there is.

Option The means of the variables are incorrect because they are not a scale for determining the correlation between two variables.

Hence, the correct option is the standard deviations of the variables.

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Complete question:

The correlation between two variables related to the same sample is a scaled quantitative measure. What is used to scale this measurement?

- the standard deviations of the variables

- the standard errors of the variables

- the coefficients of variation of the two variables

- the means of the variables

Answer:

4

Step-by-step explanation:

 The lines are perpendicular because they intersect at a right angle.

If you have been asked to assemble a two person team from among your five person team, then there are 10 different teams

Total number of members for the team = 5

Number of members that we need to assemble = 2

Here we have to use the combination

The combination is defined as the number of ways of selecting samples from the collection and the order of the collection does not matter

The number of combination of 2 members from a 5 member team = [tex]5C_2[/tex]

= 5! / 2!(5-2)!

= 5! / 2! × 3!

= (5 × 4 × 3!) /(2! × 3!)

= (5 × 4) / 2

= 20 / 2

= 10

Therefore, there are 10 different teams

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Another estimate is given as L6, R6, and M3 using the velocities at the conclusion of the time periods.

The table provides speedometer readings of velocity for a moving vehicle at 7-second intervals. t (sec) v (ft/s) 0 7 14 21 28 Using the speeds at the start of the time intervals, calculate the distance the car went during this 35-second span. travel distance in feet

Just figure out the rectangles' surface areas. Always draw the picture; it will be really helpful.

L6 = 10(0+9+31+56+71+68) \sR6 = 10(9+31+56+71+68+50) \sM3 = 20(9+56+68)

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The required linear functions are A(t) = 50t + 100 and B(t) = 25t + 200  which are represented in the attached graph. Company A is cheaper if the time is less than 4 hours.

As per the given question, we can write the linear functions as:

A(t) = 50t + 100

B(t) = 25t + 200

We can determine time t when both companies charge the same rate by equating the two equations.

50t + 100 = 25t + 200

Subtract 25t from both sides and subtract 100 from both sides

25t = 100

Divide both sides by 25

t = 4

At 4 hours both companies charge the same rate. So Company A is cheaper if the time is less than 4 hours.

After 4 hours, company B is cheaper.

Since both functions are linear, we only need two points to plot each one onto a graph.

Thus, the required linear functions are A(t) = 50t + 100 and B(t) = 25t + 200  which are represented in the attached graph.

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Hence, the negative solution is [tex]x=-3[/tex].

What is the equation?

The definition of an equation is a mathematical statement that shows that two mathematical expressions are equal.

Here given that,

When [tex]27[/tex] is subtracted from the square of a number, the result is [tex]6[/tex] times the number.

So we can write the equation is

[tex]x^2-27=6x\\x^2-6x-27=0\\x^2-9x+3x-27=0\\x(x-9)+3(x-9)=0\\(x+3)(x-9)=0\\x=-3,9[/tex]

Hence, the negative solution is [tex]x=-3[/tex].

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An equation is a mathematical statement that is made up of two expressions connected by an equal sign.

The number of chicken sandwiches is 60.

An equation is a mathematical statement that is made up of two expressions connected by an equal sign.

Example:

2x + 4 - 6 is an equation.

We have,

Number of ham sandwiches = H

Number of chicken sandwiches = C

Cost of ham sandwiches = $3.50

Cost of chicken sandwiches = $4

Now,

The total number of sandwiches = 110

The total amount earned = $415

Now,

The two equations are:

H + C = 110 _____(1)

3.50H + 4C = 415 _____(2)

From (1) we get,

C = 110 - H _____(3)

Now,

Putting (3) in (2) we get,

3.50H + 4(110 - H) = 415

3.50H + 440 - 4H = 415

-0.5H = 415 - 440

-0.5H = -25

H = 25/0.5

H = 50

Now,

Putting H = 50 in (3) we get,

C = 110 - H

C = 110 - 50

C = 60

Thus,

The number of chicken sandwiches is 60.

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The value of r is r = -8/3, for a line that has slope -12, passes through points (-3, -6) and (r, -10)

Slope is a notation that shows that a surface of which one end or side is at a higher level than another surface.

Slope formula = (y₂-y₁)/(x₂-x₁)

Given that,

A line that has slope -12, passes through points (-3, -6) and (r, -10).

To find the slope of the line that passes through points (-3, -6) and (r, -10),

Use slope formula,

m =  (y₂-y₁) / (x₂-x₁)

m = (-10 + 6) / r - (-3)

m = -4 / (r+3)

Since a line that has slope -12 passes through the points (-3, -6) and (r, -10),

Therefore, both will have the same slope,

-4 / (r+3) = -12

r + 3 = 1/3

r = 1/3 - 3

r = -8/3

The required value of r is -8/3.

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question: 4m^2 - 5mn^2 + 8m^2 - 6n^2m - m^2

answer:

11m^2-11mn^2 (see pictures)

Answer:

He spent 4&1/10 hours

Step-by-step explanation:

2&1/2+1&3/5

=5/2+8/5

=25/10+16/10

=41/10

4&1/10

The linear equation of the relationship is L = -8t + 40.

The amount Austin paid back each week is: $8.

A linear equation is straight line graph, which can be expressed as y = mx + b, in slope-intercept form. In the slope-intercept form, we have:

Slope = change in y / change in x.

Using two pairs of values from the table given, (1, 32) and (2, 24):

Slope (m) = (32 - 24) / (1 - 2)

m = 8/-1

m = -8.

Find the y-intercept (b) by substituting m = -8 and (x, y) = (1, 32) into y = mx + b:

32 = -8(1) + b

32 = -8 + b

32 + 8 = b

40 = b

b = 40

Substitute b = 40 and m = -8 into L = mt + b:

L = -8t + 40

Using the linear equation, the amount Austin paid back each week is: $8.

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Answer:

x=2173

Step-by-step explanation:

Assuming that h(x) = 7x4 - 9x3 - 41x2 + 13x + 6 and h(-2) = 7, (-2) 4 - 9(-2) (-2) 3 - 41(-2) (-2) 2 + 13(-2) + 6 = 7(16) - 9(-8) (-8) - 41(4) + 13(-2) + 6 = 0;

This indicates that (x + 2) is a synthetic polynomial factor.

(7x4 - 9x3 - 41x2 + 13x + 6) ÷ (x + 2):

The balance is zero.

A polynomial of degree 3 makes up the quotient: g(x) = 7x3 - 23x2 + 5x + 3.

The Rational Zeros Theorem shows that p: 1, 3, which are factors of the constant term 3, and q: 1, 7, which are factors of the leading coefficient 7, respectively

All potential outcomes are p/q: 1, 3, 1/ 7, and 3/7 g(3) = 7. (3)

3 - 23(3) +(3)

By artificial division:

The balance is zero.

The polynomial quotient is quadratic.

7x2 - 2x - 1 = 0

Equation for quadratics = [-b (b2 - 4ac)]/2a

x = -(-2) ± √[(-2)2 - (4 × 7 × -1)]/ (2 × 7) = (2 ± √32)/14 = (1 ± 2√2)/7

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The interest estimated by compounding methods are-

(a) Annual: n = 1; CI = $860

(b) Semiannual: n = 2; CI = $862.

(c) Monthly: n = 12; CI = $865

(d) Daily: n = 365; CI = $855

The formula for computing the compound interest is -

CI = A - P

A = P(1 + r/100nt)∧rt

In which,

(a) Annual: n = 1

A = 10,400(1 + 8/500)∧5

A = 10,400 x 1.08

A = 11,260

CI = 11,260 - 10,400

CI = $860

(b) Semiannual: n = 2

A = 10,400(1 + 8/1000)∧10

A = 10,400 x 1.089

A = 11,262

CI = $862.

(c) Monthly: n = 12

A = 10,400(1 + 8/6000)∧60

A = 10,400 x 1.083

A = 11,265

CI = $865

(d) Daily: n = 365

A = 10,400(1 + 8/182500)∧1825

A = 10,400 x 1.0832

A = 11,255

CI = $855

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Using the system of equations we get the values of 3 digit number as:

238

Given:

The sum of the digits of a three-digit number is 13.

The tens digit, t, is 1 more than the hundreds digit, h. The units digit, u, is 3 more than the sum of the tens and hundreds digits.

we are asked to determine each digit of the given number:

we frame the equation as:

tens digit (t) = 1+h

hundreds digit (h) = h

units digit (u) = 3+(t+h)

hence,

h + (1+h) + (3+(t+h)) = 13

open the brackets.

h+1+h+3+(t+h)=13

substitute t value from the above mentioned state.

h+1+h+3+((1+h)+h)=13

h+1+h+3+1+h+h=13

arrange the like terms and add.

4h + 5 = 13

4h = 13-5

4h=8

h = 8/4

h = 2

hence we get the hundreds digit as 2.

now substitute it to get t and u value.

t = 1+h

t = 1+2

t = 3

tens digit = 3

u = 3+(t+h)

u = 3+(3+2)

u = 3+5

u = 8

units digit = 8

Hence we get the number as 238 whose sum is 13 when added.

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Answer: (2x + 5) (4x^2 -10 + 25)

Step-by-step explanation:

I use the equation a^3 + b^3 = (a+b) ( a^2 -ab + b^2)

You can factor the answer (2x + 5) (4x^2 -10 + 25) out to check and will get 8x^3 +125

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Answer:

7.14 km

Step-by-step explanation:

the total time that the bus takes to travel from Deltaville to Eastwick  12:42 - 11:32 = 00:10

Convert to hours 00:10 / 60 minutes/hour = 0.17 hours.

distance = speed * time

distance = 42 km/h * 0.17 hours

distance = 7.14 km

Answer:

Obtuse

Step-by-step explanation:

Obtuse because one angle is more than 90 degrees.

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If a measurement was not sensitive, and resulted in everyone scoring high, then this is called a ceiling effect

Given,

Ceiling effect;-

When a large percentage of study participants get the highest scores on the observable variable, it is said that a ceiling effect has occurred. Discrimination between subjects at the top end of the scale is therefore impossible. For instance, a test could result in, say, 50% of the students receiving a perfect score.

Here,

To be able to measure participant differences, variables must be measured with sufficient sensitivity. However, if a test was insensitive and everyone received good scores, this is known as ceiling effect

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The required equation of the line is given as y = -14x + 45.

A straight line can be written in the form of equation as, y = mx + c.

Two straight lines intersect each other only at one point.

When two straight lines are parallel to each other the angle between them is zero.

Given that,

The slope of the line is -14.

And, the point it passes through is (3, 3).

The equation of the line for given data can be written as follows,

(y - 3)/(x - 3) = -14

=> y - 3 = -14(x - 3)

=> y = -14x + 42 + 3

=> y = -14x + 45

Hence, the equation of the line for the given point and slope can be written as y = -14x + 45.

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Answer: X=0

Step-by-step explanation: X is equal to zero. This is the only way the equation can be true.

Answer: $69

Step-by-step explanation: 562-148=414 & 414/6=69

Based on the z-score, an Endure All battery selected at random has a 10.56% chance of lasting more than 550 hours.

How closely a value relates to the mean of a set of values is expressed by a Z-score.

The Z-score is created using standard deviations from the mean.

A data point's total value is equal to the mean value when the Z-score of the data point is equal to 0.

So, in order to determine how far the raw score deviates from the mean, the Z score is used.

The following steps are used to determine the Z score:

z = (x - μ)/σ

We know that:  x > 550 and μ = 500, σ = 40

z = 550 - 500 / 40

z = 1.25

The graph of the normal distribution indicates:

P(z > 1.25) = 1 - P(z < 1.25)

P(z > 1.25) = 1 - 0.8944

P(z > 1.25) = 0.1056

Therefore, based on the z-score, an Endure All battery selected at random has a 10.56% chance of lasting more than 550 hours.

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9514 1404 393  each kind of ticket were sold  if 550 tickets were sold for a game for a total of $687.50. if adult tickets sold for $1.50 and children's tickets sold for $1.00,

adult: 325

children's: 225

It usually works well to let a variable represent the higher-value item in the mix. Here, we can let 'a' represent the number of adult tickets sold. Then the total revenue is ...

 1.50a +1.00(550 -a) = 687.50

 0.50a = 162.50 . . . . . . . . . . . . . subtract 550 and collect terms

 a = 325

 c = 550 -325 = 225

325 adult and 225 children's tickets were sold

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Answer:

Step-by-step explanation:

The width of a confidence interval except increased sample size.

What is the Confidence Interval?

An area surrounding a measurement that indicates how accurate it is is called a confidence interval.

The following points clear the answer of given question:

Hence, The width of a confidence interval except increased sample size.

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A=[e to the power of π/2-2] when the height and breadth of a typical approximate rectangle that you have drawn. then locate the region's area. y=eˣ, x=π/2, y=cos x

Given that,

We have to draw the area that the provided curves surround. Choose x or y as the integration direction. Label the height and breadth of a typical approximate rectangle that you have drawn. then locate the region's area. y=eˣ, x=π/2, y=cos x

We know that,

y=eˣ, x=π/2, y=cos x

Now area of the shaded region is

A=[tex]\int\limits^\pi/2_ x=0 \int\limits^e^{2} _y=cosx {dy} \, dx[/tex]

A=[tex]\int\limits^\pi/2_0 {e^{x}-cosx } \, dx[/tex]

Now we integrate with respect to x.

A=[eˣ-sinx]₀π/2

A=[e to the power of π/2- sin(π/2)]-[e⁰-sin(0)]

A=[e to the power of π/2-1]-[1-0]

A=[e to the power of π/2-1-1]

A=[e to the power of π/2-2]

Therefore, A=[e to the power of π/2-2] when the height and breadth of a typical approximate rectangle that you have drawn. then locate the region's area. y=eˣ, x=π/2, y=cos x

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