which statement correctly describes the rage of change between hours studied and corresponding test scores of the two students?

A. Jake’s test scores increased by 1 point more than Howie’s test scores for each hour studied.

B. Jake’s test scores increased by 3 points more than Howie’s test scores for each hour studied.

C. Howie’s test scores increased by 1 point more than Jake’s test scores for each hour studied.

D. Howie’s test scores increased by 3 points more than Jake’s test scores for each hour studied.

Answer:

Step-by-step explanation:

first we simplify the ratio

5:8

8/5=1.6

1:1.6 so for every 1 dollar she save she spends 1.6

next we do 1040/1.6=650

1040-650=390

390:650

i hope this helps and is the correct answer pls let me know

Answer:

6

Step-by-step explanation:

3х - 5 = 13

     +5   +5

3x=18

/3   /3

x=6

Answer:

PR = 6.93 units

PQ = 13.86 units

Step-by-step explanation:

From ΔPQR,

m∠Q = 30°

QR = 12

By applying tangent rule for the given angle in the triangle,

tan(30°) = [tex]\frac{\text{Opposite side}}{\text{Adjacent side}}[/tex]

tan(30°) = [tex]\frac{PR}{QR}[/tex]

[tex]\frac{1}{\sqrt{3}}=\frac{PR}{12}[/tex]

PR = [tex]\frac{12}{\sqrt{3} }[/tex]

PR = 4√3 ≈ 6.93

Now we apply cosine rule,

cos(30°) = [tex]\frac{\text{Adjacent side}}{\text{Hypotenuse}}[/tex]

[tex]\frac{\sqrt{3} }{2}=\frac{QR}{PQ}[/tex]

[tex]\frac{\sqrt{3} }{2}=\frac{12}{PQ}[/tex]

PQ = [tex]\frac{24}{\sqrt{3} }[/tex]

PQ = 8√3 ≈ 13.86

Answer:

1. D.

2.C.

Step-by-step explanation:

If I'm right pls mark brainleist

Answer:

markup 75%

Step-by-step explanation:

The difference in prices is $70-$40=$30.

So, we need to find what percentage of 40 is 30. We do this by dividing: 30/40=0.75, which is 75%. So, the markup is 75%.

Answer:

DEF~XYZ

xz/DF=xy/de in similar triangle side are proportional

3x/7=7.5/5

3x=7.5/5 ×1/7=7.5/35

Answer:

umm idrk

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

Yes, they are congruent. Sorry I'm new to this kind of stuff. Really sorry if it's wrong!

Answer:

the answer is 90

Step-by-step explanation:

hope it helps

have a nice day ^_^

Answer:

It is 90 degrees.

Step-by-step explanation:

It is one fourth of 360 degrees, which is 90 degrees.

Hope that helps!

Answer:

300

Step-by-step explanation:

(75*4)/1

9514 1404 393

Answer:

Step-by-step explanation:

10 years ago, the sum of their ages was 65 -2·10 = 45.

If Karl was twice as old as Eddie, his contribution was 2/3 of the sum and Eddie's was 1/3. That is, Karl was (2/3)(45) = 30 and Eddie was 15 at that time.

Now, Karl is 40 and Eddie is 25.

__

This can be solved using a system of equations.

  e = 65 -k

  (k -10) = 2(e -10)

Substituting the first equation into the second gives ...

  k -10 = 2((65 -k) -10)

  k -10 = 110 -2k . . . . . . . simplify

  3k = 120 . . . . . . . . . . . . add 10+2k

  k = 40

  e = 65 -40 = 25

Answer: you added 6 liters of juice

Step-by-step explanation:

You have 10 liters of a juice blend that is 60% juice. How many liters of pure juice need to be added in order to make a blend that is 75% juice?

Ten liters of a juice blend at 60% juice means you also have ten liters of a juice blend at 40% water. 10 x .40 yields 4 liters of water in your blend.

A juice blend of 75% has a water content of 25%. So the same 4 liters of water must represent 25% of the blend after adding more juice.

4/.25 = 16 liters. 16 x .75 = 12.

12 + 4 = 16.

That means after adding your juice you will have 16 liters of blend at 75% juice.

You originally had 10 liters at 60% and now you have 16 liters at 75% . Subtracting 10 from 16 means you added 6 liters of juice.

Answer:

The answer is x= 10.6

Step-by-step explanation:

because C and D are both bigger numbers then the side that is given so those are eliminated and you're left with A and B and there is no way it can be B because thats to big of a number so its A

Answer:

500

Step-by-step explanation:

500-400=100

100-50=50

500

9 < x

this means that x is a larger number than 9

9 = x

this means that x is equal to 9

Answer:

3/16

Step-by-step explanation:

Let the size of the whole apple be T

Given that 3/4 of the apple is left, it means the size left

= 3T/4

Since Victor plans to eat 1/4 of the pie that was left, this amounts to

1/4 * 3T/4

= 3T/16

This means that Victor will eat 3/16 of the whole pie tomorrow

Answer:

y/2

Step-by-step explanation:

Answer:

20

Step-by-step explanation:

Answer:

20 sq.units

Step-by-step explanation:

Given,

Height of the parallelogram = 4 units

Base of the parallelogram= 5 units

Therefore, area of the parallelogram = base × height

= 4 units × 5 units

= 20 square units (Ans)

Answer:

27 FT

Step-by-step explanation:

Area of square = L × W

= 4.5 ft × 4.5 ft

= 20.25 ft

Area of parallelogram = bh (base times height)

= 1.5 ft × 4.5 ft

= 6.75 ft

Total area = 20.25 ft + 6.75 ft

= 27 ft

HOPE THIS HELPED

Answer:

yellow

Step-by-step explanation:

Answer:

anthony froze 3 1/4 of the meatball

Answer:

I can help you dude if any trouble (:

Answer:64

Step-by-step explanation:

Answer:

64 is the answer :)

Step-by-step explanation:

i hope its correct

Part 1:

Calcium(Ca) And Strontium (Sr)

Part 2:

Protons: 19

Electrons: 19

(both are the same)

Neutrons:20

Subtract 19 From 39 And Get 20

If You Use This Pls Put it in your own words

Also Sorry if I'm late!

Answer:

I think you want to the coordinates of point A

the answer is

(-1,-2)

Answer:

Answer:

b

Step-by-step explanation: