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Elena L [17]
3 years ago
8

Which equation represents a proportional relationship?

Mathematics
1 answer:
Aneli [31]3 years ago
7 0
And which is the equation?
You might be interested in
14. The area of a rectangle is 375 square inches and it’s perimeter is 80 inches. Find both the length and width.
Pavel [41]

Answer:

Length  =25 inches

Width = 15 inches

Step-by-step explanation:

Let l = length of rectangle, w = width of rectangle

Given the area and the perimeter of the rectangle, we can write:

lw = 375

2l+2w=80

So:

l+w = 80\div2

=40

l=40-w

Now, we can use substitution to find the value of w:

lw = 375

(40-w)w = 375

40w-w^2 = 375

375+w^2-40w = 0 (Quadratic equation)

(w-15)(w-25) = 0

∴ w = 15, 25

We can use substitution again to find the value of l

lw = 375

l=375\div w

=25,15

∵ Length usually refers to the longer side of a rectangle, ∴ length =25 inches and width =15 inches.

Hope this helps :)

8 0
3 years ago
!!Pleas help me!! ASAP!! I will give you BRAINLYEST!!
WARRIOR [948]

Answer:

Step-by-step explanation:

the circumference is

C=2*r*3.14=3.14*d

the below choices are the only ones that are valid

c/3.14=d

C/d=3.14

the answer B

4 0
3 years ago
Find the area of a circle having a circumference of 12
timama [110]
A=3.14r^2 so 3.14x 6 which is your radius to the power of 2 A=113.1
5 0
4 years ago
Read 2 more answers
Suppose x, y, and z are different positive integers such that xy, yz, and zx are all perfect
slega [8]

Answer: Yes, and the numbers are 4, 36, and 9

Step-by-step explanation:

Yes, because it x=4, y=36, and z=9 then 4 * 36=144, 144=12*12 4*9=36, 36=6*6, and 9*36=324, 324=18*18. As you can see they are all perfect squares and 4, 36, and 9 are all perfect sqaures too.

6 0
3 years ago
Solve the equation 3x-13y = 2 for y.
Harman [31]

Answer:

y= 3/13x + 2/13

Step-by-step explanation:

3x-13y=2

Subtract 3x from both side

-13y=-3x-2

Divide by -13

y= 3/13x + 2/13

3 0
3 years ago
Read 2 more answers
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