1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
nikdorinn [45]
3 years ago
14

Sarah is researching the connection between the time students spend watching television and their performance in school. Her stu

dies indicate that there is an inverse relationship between TV time and GPA, and that a student who watched 15 hours of TV per week can be expected to have a GPA of 3.5. Find k, the constant of variation, for this relationship.
A) 0.23
B) 4.29
C) 8.1
D) 52.5
Mathematics
2 answers:
mihalych1998 [28]3 years ago
8 0

Answer: D) 52.5

Step-by-step explanation:

The equation for inverse variation between two quantities x and y is given by :-

k=yx, where k is the constant of variation, for this relationship. (1)

Given : Sarah studies indicate that there is an inverse relationship between TV time and GPA, and that a student who watched 15 hours of TV per week can be expected to have a GPA of 3.5.

Then from (1) the constant of variation is given by :-

k=15\times3.5=52.5

Hence, the required answer is option D) 52.5 .

lubasha [3.4K]3 years ago
6 0

Her studies indicate that there is an inverse relationship between TV time and GPA, and that a student who watched 15 hours of TV per week can be expected to have a GPA of 3.5

In equation form

15 = k(1/3.5)

Solve for k

K = 15 * 3.5

<span>K = 52.5 is the constant of variation</span>

You might be interested in
A clothing store sells a customer 3 T-shirts and 4 pairs of shorts for $72.
ddd [48]

Answer:

C. t=$8, s=$12

Step-by-step explanation:

3($8)+4($12)=$72

4($8)+1($12)=$44

8 0
3 years ago
Complete the table of equivalent ratios. 3:2 <br>?:4<br>9:6<br>12:8<br>15:10​
Vera_Pavlovna [14]

Answer:

6:4

Step-by-step explanation:

well on one side your adding 3 to the next ratio

so on the other side your doing the same of adding 2 to the next ratio

also they all reduce down to 3:2

6 0
3 years ago
Read 2 more answers
The school orchestra has 25 woodwinds, 20 percussionists, 15 strings and 40 brass instruments.
tankabanditka [31]

Answer: select all what that apply?

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
Which expression means 56? A) 5 × 5 × 5 × 5 × 5 × 5 B) 6 × 6 × 6 × 6 × 6 × 6 × 6 C) 6 × 5 D) 5 6
Alja [10]
If u mean 5^6, it is 5 x 5 x 5 x 5 x 5 x 5
6 0
3 years ago
Read 2 more answers
What is the area of the triangle?<br> 6<br> 2<br> 3
Llana [10]

Answer:

6

Step-by-step explanation:

Find the area of both triangles inside the bigger triangle and add them together.

Use the Pythagorean theorem to find the missing length of the leg in the smallest triangle:

a² + b² = c²

2² + b² = 3²

4 + b² = 9

5 = b²

2.2 ≈ b

Calculate the area of the smaller triangle:

1/2(bxh)

1/2(2 x 2.2)

1/2(4.4)

2.2

Calculate the area of the bigger triangle:

<em>We know that the longer leg is 3.8 units because we were able to subtract the length of the smaller triangle's leg from 6. </em>

1/2(bxh)

1/2(2 x 3.8)

1/2(7.6)

3.8

Add both areas to find the area of the largest triangle:

3.8 + 2.2 = 6

7 0
3 years ago
Other questions:
  • Can some one just show me how to do it? &amp; ill find the answer
    12·1 answer
  • Multiply and simplify. Show work to earn BRAINLIEST ANSWER ASAP!98 POINTS<br> (7x-6)(3x^2-4x+5)
    10·1 answer
  • Justin gives his sister 3/4 of his<br> dollar. How much money is that?
    12·2 answers
  • Solve for X, and show the equation you would use to solve.
    8·1 answer
  • Rosie and Dan share some sweets. Dan gets 1/4 of the sweets. Write down the ratio of the number of sweets Rosie gets to the numb
    9·2 answers
  • Drag the missing statements and reasons to the correct spot to complete the proof
    12·1 answer
  • Help me please , I don’t understand this very well , I’m trying to practice :/
    8·1 answer
  • Help on math aging sry if this is to much middle school question
    7·2 answers
  • Jackson invested $4,200 in an account paying an interest rate of 9 1/2 compounded continuously. Julia invested $4,200 in an acco
    14·1 answer
  • Q/R=8/d Solve for d <br> please and thank you!
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!