Kiara made the table below to show the IQ scores and grade point averages (GPAs) of students in her class. She made another table to show the standardized test scores and IQ scores.



IQ, GPA, and SAT Scores
IQ
GPA

IQ
Standardized Test Score
120
3.7

120
1540
85
2.3

85
800
110
3.0

110
1,200
96
2.7

96
1000
100
2.9

100
1100

She graphs the data in each table and writes the rounded values as shown for the regression line y = a x + b.

I Q and G P A. a = 0.04. b = negative 0.9. I Q and Standardized Scores. A = 20. b = negative 924.


Next, Kiara uses the steps below to predict a student’s standardized test score based on the student’s GPA of 4.0.

Step 1 Write the equation of the trend line for IQ and GPA.
y = 0.04 x minus 0.9
Step 2 Write the equation of the trend line for IQ and standardized test score.
y = 20 x minus 924
Step 3 Find the IQ that is expected from a GPA of 4.0.
y = 0.04 x minus 0.9. 4 = 0.04 x minus 0.9. 4.9 = 0.04 x. 122.5 = x.
The IQ is about 122.5.
Step 4 Find the corresponding standardized test score for an IQ of 122.5.
122.5 = 20 x minus 924. 122.5 = 20 x minus 924. y = 523.
The standardized test score is 523.

In which step did Kiara make the first error?
step 1
step 2
step 3
step 4

Answers

Answer 1

Answer:

Step 4 D

Step-by-step explanation:

Answer 2

Answer:

step 4

Step-by-step explanation:


Related Questions

so if fingernails grow about 0.1 millimeters each day how much do nails grow in 30 days?

Answers

Answer:

3.47 mm

Step-by-step explanation:

the compound interest formula a=p(1+r/n)^nt where p is the initial amount invested, r is the interest as a decimal, n is the number of times compound annually, the the number of years. Determine the value of the account if the initial investment is $8,000 compounded monthly at a rate of 6% after 10 years.

Answers

Answer:

Option (D)

Step-by-step explanation:

Formula to calculate the final amount after 't' years is,

A = [tex]P(1+\frac{r}{n})^{nt}[/tex]

Here P = Initial amount

r = rate of interest

n = number of times compounding done

t = duration of investment

For A = $8000

r = 0.06

t = 10 years

n = 12 (compounded monthly in a year)

Therefore, final amount = [tex]8000(1+\frac{0.06}{12})^{12\times 10}[/tex]

                                        = [tex]8000(1+0.005)^{120}[/tex]

                                        = [tex]8000(1.005)^{120}[/tex]

                                        = 8000(1.8194)

                                        = $14555.17

Therefore, Option (D) will be the answer.

Answer:

the answer is d

Step-by-step explanation:

$14,555.17


A line passes through point (8, -2) and has a slope of -5/4
Write an equation in Ax+By= C form for this line.
Use integers for A, B, and C.
show work on how you got it

Answers

Answer:

4y+5x=32

Use slope intercept form, then change to Ax+By= C form.

Jordan is using a number line to model the division expression Negative 24 divided by 12. What should be a step in his work?

Answers

Answer:

-24/12= -2

Step-by-step explanation:

Answer:

Its B

Step-by-step explanation:

If I'm wrong please tell me

enter your answer as a number like this:42

Answers

Im not sure if its y=19
y= 6(5)-11
y=30-11
y=19

Find the angle measure.
Angle E

Answers

Triangle ABC is an isosceles triangle. This means that base angles A and C are the same measure.

Triangle CDE is also isosceles. This means that angles C and D are the same measure.

The hatch marks shown in both triangles clearly indicate this fact of geometry.

So, if angle C is 40 degrees, C and D must be 70 degrees each because the sum of the angles in a triangle is 180 degrees.

Angle C = 70 degrees.

. . .70 degrees= angle C. . . . .


I’ll mark u as brainlist if u get this right!!

Answers

Answer:

A

Step-by-step explanation:

When X is less than -1, positive parabola.  

I agree, (just to give a second opinion) It is A

(3x2)(−2x4) = 3(−2)x2∙4 = 6x8

Could you please find out what's wrong and say what should be there instead? The problem is : (3x to the power of 2 ) (-2x to the power of 4) = 3(-2)x to the power of 2.4 = 6x to the power of 8

Answers

Answer:

The correct answer is -6x⁶

Step-by-step explanation:

Given that:

[tex]3x^2 ( - 2x^4 ) \\ \\ =3(-2)x^{2.4} \\ \\ = 6x^8[/tex]

From the second step above, using the law of indices the correct format should be

[tex]= (3\times -2)x^{2+4}[/tex]

So, the problem lies where we have 2.4, it is not supposed to be (2*4). It supposed to be 2+4 because the law of indices states that we multiply the index together and add their power.

Then the result of that yields

= -6x⁶

In the third step, they also omit the negative sign, when multiplying (3 * -2).

Thus, the correct answer is -6x⁶

6) Which list shows how many equal-sized groups of 18 students Ms. Lee can make?
1, 2, 3, 4, or 6
7, 9, 14, 18, or 28
1, 2, 3, 6, 9, or 18
1, 2, 4, 7, 14, or 28

Answers

Answer:

1,2,3,6,9

Step-by-step explanation:

Got it right

Which number goes in the box?
8 + 9 = 9 +

Answers

Answer:

8

Step-by-step explanation:

I hope this helps you out!

Answer:

8

Step-by-step explanation:

...

What is the value 6^-8/6^-5?

Answers

Answer:

0.00462962962

Step-by-step explanation:

ill give brainlyest to whoever gets this question right

Answers

Answer:

C

Step-by-step explanation:

430 feet above sea level

Answer:

C. 430 feet above sea level

A small pool is being drained. There are 1,320 gallons of water remaining in the pool after 2 minutes and 1, 040 gallons after 9

minutes. How long would it take for the pool to be completely drained? (1 point)

Answers

Answer: 35 minutes

Step-by-step explanation:

For us to solve the question, we have to calculate the amount of gallons of water that is drained every minute. This will be:

= (1320 - 1040) / (9 - 2)

= 280/7

= 40 gallons per minute

Since we are told that 1,320 gallons of water remain in the pool after 2 minutes. This means that the total water in the pool at the beginning was:

= 1320 gallons + (40 × 2)

= 1320 gallons + 80 gallons

= 1400 gallons

The time taken for the pool to be completely drained will be:

= Total water in pool / Gallons drained per minute

= 1400 / 40

= 35 minutes

What is the equation of the line?

Answers

Answer:

I believe it should be the second answer

Question 6 (1 point) Fossils are usually found in sedimentary rock. O True O False​

Answers

Answer: true

Step-by-step explanation:

What is an equation of the line that passes through the points (3,4) and (−4,−3)? Put your answer in fully reduced form

Answers

Answer:

The equation of the line is y = x + 1

Step-by-step explanation:

The equation of the line is y = m x + b, where

m is the slope of the lineb is the y-intercept

The rule of the slope of the line is m = [tex]\frac{y2-y1}{x2-x1}[/tex] , where

(x1, y1) and (x2, y2) are two points on the line

∵ The line passes through points (3, 4) and (-4, -3)

∴ x1 = 3 and y1 = 4

∴ x2 = -4 and y = -3

→ Substitute them in the rule of the slope above to find it

∵ m = [tex]\frac{-3-4}{-4-3}[/tex] = [tex]\frac{-7}{-7}[/tex] = 1

m = 1

→ Substitute it in the form of the equation above

∴ y = 1(x) + b

y = x + b

→ To find b substitute x by 3 and y by 4 in the equation

∵ 4 = 3 + b

→ Subtract 3 from both sides

∵ 4 - 3 = 3 - 3 + b

1 = b

→ Substitute it in the equation

y = x + 1

The equation of the line is y = x + 1

In 56 years, Kevin will be 999 times as old as he is right now.

Answers

Answer:

55,944‬

Step-by-step explanation:

Answer:Wont that mean he would be dead? Or is he like a type of animal that lives for a very long time?

Step-by-step explanation:

x+y=12
-x=-y-10
HELP thanks

Answers

do you have a picture or problem sentance that goes with that

Find the theoretical probability.
Simplify completely.

Answers

Answer:

[tex] \frac{1}{8} [/tex]

Answer:

The correct answer is 1/4!

Step-by-step explanation:

On Acellus

Have a great day!




Help is it b???????????????

Answers

Answer:

D

Step-by-step explanation:

Answer:

D

Step-by-step explanation:

Vertically opposite angles are equal

What would this be ?

Answers

Answer:

-8,1 mabey I don't really know

HELP ME NOW HURRY ASAP PLEASE

Answers

A triangles 3 angles add up to 180 degrees which means 25+50=75 and 180-75= 105 So i believe the answer is 105°

Four tenths of a number increased by the second number equals 19. One tenth of the first number decreased by the second number is equal to 1. What are the two numbers?

Answers

Answer:

The two numbers are 40 and 3

Step-by-step explanation:

Assume that the first number is x and the second number is y

Four tenths = [tex]\frac{4}{10}[/tex] = 0.4

One tenth = [tex]\frac{1}{10}[/tex] = 0.1

∵ Four tenths of 1st number increased by the 2nd number equals 19

∵ The 1st number = x and the 2nd number = y

0.4x + y = 19 ⇒ (1)

∵ One tenth of the 1st number decreased by the 2nd number is equal to 1

0.1x - y = 1 ⇒ (2)

Now we have a system of equations to solve it

→ Add equations (1) and (2) to eliminate y

(0.4x + 0.1x) + (y + -y) = (19 + 1)

∴ 0.5x + 0 = 20

∴ 0.5x = 20

→ Divide both sides by 0.5 to find x

∵ [tex]\frac{0.5x}{0.5}[/tex] = [tex]\frac{20}{0.5}[/tex]

x = 40

→ Substitute the value of x in equation (1) or (2) to find y

0.4(40) + y = 19

∴ 16 + y = 19

→ Subtract 16 from both sides

∴ 16 - 16 + y = 19 - 16

y = 3

The two numbers are 40 and 3

Emma jogs 2 miles along the beach in
1
3
of an hour. If she travels at a constant rate, how far will she jog in an hour?

Answers

Answer: 6 miles

Step-by-step explanation: 1/3 hour = 2

1 hour = 6 (2x3=6)

Answer:

6 miles

Step-by-step explanation:

Dwayne has a wrench set with the socket sizes of 1, 1/2, 1/4, 1/8, 1/16 what would the next size be?​

Answers

Notice that the denominator is a multiplied by 2 for each fraction.

1/1•2 = 1/2

1 /2•2 = 1/4

1/4•2 = 1/8

1/8•2 = 1/16

1/16•2 =1/32

The next size is 1/32.

(
1
×
10
6
)

(
9
×102)

Answers

Answer:

-812

Step-by-step explanation:

(1×106)-(9×102)

106-918

-812

Drag the tiles to the correct boxes to complete the pairs. Match each population trend to a contributing factor. government-sponsored family control programs agricultural economies medical advancements Industrial Revolution high birthrate arrowRight low death rate arrowRight increase in food supply arrowRight low birthrate arrowRight Reset Next

Answers

Answer:

Matching the population trend to a contributing factor:

Contributing Factors                                                 Population Trends

government-sponsored family control programs    Low birth rate

agricultural economies                                              increase in food supply

medical advancements                                             low death rate

Industrial Revolution                                                 high birth rate

Step-by-step explanation:

a) Contributing factors are some negative or positive factors that influence or cause a single event or chain of events that result to the incident.

b) Defining population trends:

1) High birth rate: the industrial revolution triggered high birth rate, following increased food supply and medical advancements.

2) Low death rate: medical advancements brought about low death rate as better healthcare is provided to the sick.

3) Increase in food supply: large-scale agricultural economies ensured increasing food production and supply.

4) Low birth rate: when governments started sponsoring family control programs, the resulting effect was low birth rate.

Answer:

The first one is children and adolescents

the second one is adults

the third one is pregnancy

the last one is indivisuals with brittle bones

Step-by-step explanation:

hope this helps :D

Cameron won a laptop in a school raffle. The diagonal of the laptop measures 26 inches. The length is 24 inches. How tall is the computer screen?
plz help me

Answers

I need help to with this

A cardboard box has edges of length 5.5 in, 3.2in,and 7.25 in.what is the volume of the box?I will gave u Brainliest if u tell me the answer have a nice day

Answers

Answer:

The answer is 127.6

Step-by-step explanation:

To find the volume of something, you multiply.

So:5.5 times 3.2 times 7.25 is equal to 127.6

HOPE THIS HELPS YOU!!!!    :)

Answer:

127.60 square inches

Step-by-step explanation:

Multiply the diameters all together to get your answers.

5.5 x 3.2 x 7.25

Multiply

5.5 x 3.2 = 17.6

Multiply some more

17.6 x 7.25 = 127.6

You can also just multiply like this:

5.5 x 3.2 x 7.25 = 127.6

Hope this helped :)

Please consider Brainliest :)

9x-7= -7
solve for x

Answers

Answer:

-2

Step-by-step explanation:

Answer

x=0


Explanation
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