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kondor19780726 [428]
3 years ago
5

Please help! tell whether x and y are proportional. if so, identify the constant of proportionality

Mathematics
1 answer:
sesenic [268]3 years ago
8 0

Answer:

y = (1/2)x is proportional; (1/2)

Step-by-step explanation:

1. y= 1/2x   Proportional; constant of proportionality is 1/2.

2. y=2x + 7   Not proportional because of the non-zero y-intercept.

3. x= y + 2    Not proportional (same a reason as for #2)

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Ryan runs 3 miles in 28 minutes. at the same rate, how many miles would he run in 42 minutes?
Sphinxa [80]
If 3mile=28 min
x mile=42 min
cross multiply
x=3/28
therefore if 3/28=1 min
then x mile= 42 min
cross multiply
42 x 3/28 =21 x 3/14
                =3 x 3/1
                =9
The answer is 9 miles
5 0
3 years ago
The members of a club decide to sell hats to raise money. They originally
finlep [7]

Answer:

A. 41 (12 - 2)

Step-by-step explanation:

If the club decided to charge $12 for a hat, but reduced the price by $2, the reduced price of the hat is (12 - 2). The amount of money earned is based upon the price of the hat multiplied by the number of hats sold. Therefore, the answer is 41 (12 - 2).

Hope this helped :)

7 0
2 years ago
Use the like bases property to solve the equation:<br> 16^x = 1/4<br> x=
gavmur [86]

Answer:-1/2

Step-by-step explanation:

16^x=1/4

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4^2x=4^(-1)

Base cancelled each other since they are the same

2x=-1

Divide both sides by 2

2x/2=-1/2

x=-1/2

7 0
2 years ago
Is it possible to factor x cubed?
liberstina [14]
I dont think so.
factoring means make simpler
x cubed is already is simple so i dont think you cant. correct me if i am wrong
7 0
3 years ago
Find the product. Simplify your answer.<br> (2u–4)(u2+2u–1)
Goshia [24]
It would be 2u3+4u2-2u-4u2-8u+4= 2u3-10u+4
4 0
2 years ago
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