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
mariarad [96]
3 years ago
13

The variables y and x have a proportional relationship, and y = 7 when x = 2.

Mathematics
2 answers:
liq [111]3 years ago
8 0

Answer:

y= 35/2  when x=5

x=6 when y =21

Proportinal relatiionships:  y=−x ,  y=15x

Step-by-step explanation:

The formula for direct variation is

y= kx

If y=7 and x=2, we can solve for k

7 =k*2

Divide by 2

7/2 =k

y =7/2 x

Now if x=5

y =7/2 * 5

y =35/2


Now if y=21

21 =7/2 * x

Multiply by 2/7

21 * 2/7 = 7/2 * 2/7 x

6 =x


Which equation represents a proportional relationship?

y=−x

YES  k = -1   Some people debate about having a negative constant, but everything I have read and taught says you can have a negative constant.

y=−5(x+1)

This does not go through the origin so no

if x=0  y = -5

y = 5x + 1

if x = 0 y =1   so no

y=15x

YES  k = 15

almond37 [142]3 years ago
4 0

Answer:

17.5

i just did it on my quiz and it was wrong(the other guy is wrong)

You might be interested in
A dinner for two at the local seafood restaurant cost
Vlad [161]

Answer:

63.38

Step-by-step explanation:

(49.90)(20%)(6%)

20%= $9.98

49.90+9.98 =59.80

(59.80)(6%)

6%= $3.58

59.80+3.58=63.38

8 0
3 years ago
Zach bought a pair of jeans for 54$ .the next week the same jeans were 74$ what's the percent of change ?
navik [9.2K]
About a 37% change

74 - 54 = 20
20/54 = <span>0.37037037037</span>
3 0
3 years ago
Read 2 more answers
What is the least common multiple of both 9 and 12
Crank
LCM is found by finding the factors of both and making sure that both are inthere
9=3 times 3
12=2 times 2 times 3
common one is 3
so we have to have at least 2 threes and 2 twos
2 times 2 times 3 tiimes 3=36
answer is 36
3 0
3 years ago
Read 2 more answers
5x^(2)+2 in verbal form
USPshnik [31]

Answer:

Five x squared plus two

Step-by-step explanation:

An exponent of two is always pronounced as "squared"

8 0
3 years ago
Write 14:56 in its simplest form
OverLord2011 [107]

Answer:2:8

Step-by-step explanation:

divide everything by 7

4 0
3 years ago
Read 2 more answers
Other questions:
  • A new catalyst is being investigated for use in the production of a plastic chemical. Ten batches of the chemical are produced.
    14·1 answer
  • The initial population of a town is 4100​, and it grows with a doubling time of 10 years. What will the population be in 8 ​year
    10·1 answer
  • 767,074 to the nearesr hundred thousand
    7·2 answers
  • Please help me. I bad brain
    6·2 answers
  • Find the values of x and y.
    8·1 answer
  • At Farmer Jones Market, bananas cost $.80 per pound. At Farmer Garcia's
    14·1 answer
  • Find the slope of the line.
    14·1 answer
  • 9.75t + 9 = 18.5t + 16
    11·2 answers
  • What are the two categories of fees?
    15·2 answers
  • (57x2:3)+32x450-[39-(4+2):2[+8=
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!