Which quantity is proportional to 20? 5? check all that are true. 100? 25 10? 2 60? 15 40? 2 4? 1

Proportion says that two ratios (or fractions) are equal.

Example: you want to draw the dog's head ... how long should it be?

proportion dog

Let us write the proportion with the help of the 10/20 ratio from above:

?42 =  1020

Now we solve it using a special method:

?/42 : 10/20

Multiply across the known corners,

then divide by the third number

And we get this:

? = (42 × 10) / 20  

= 420 / 20  

= 21

So you should draw the head 21 long.

Source: https://www.mathsisfun.com/algebra/proportions.html

Now, back to your question

20/5

a. 100/25

100 x 5 = 500

25 x 20 = 500

Both matches, so 100/25 is proportional to 20/5

b. 10/2

10 x 5 = 50

2 x 20 = 40

50 is not equal to 40, so 10/2 is not proportional to 20/5

c. 60/15

60 x 5 = 300

15 x 20 = 300

Both matches, so 60/ 15 is proportional to 20/5

d. 40/2

40 x 5 = 200

2 x 20 = 40

40 is not equal to 200, so 40/2 is not proportional to 20/5

e. 4/2

4 x 5 = 20

2 x 20 = 40

20 is not equal to 40, so 4/2 is not proportional to 20/ 5

In conclusion, 100/25 and 60/15 are proportional to 20/5.

Hope this helped! Good luck!

answer: b. f(x) = (x + 2)^3 (x^2 - 7x + 3)^4

step-by-step explanation:

polynomials always have as many roots as their order. this is a 4th order polynomial- hence 4 roots!

complex roots of polynomials always come in pairs. the quadratic equation has the "+/-" in that will alwaysgenerate m+ni amd m-ni, so 7-2i must be a root of this polynomial equation.

the order of the numerator and denominator are both 2. so the horizontal asymptote is y=a2/b2 =7

verticle asymptotes are the forbidden x-values. f(x) becomes undefined at x=-3 because this value will cause a zero denominator.

a graph of r(x) will have vertical asymptotes at ±1 because these values will make the denominator zero. so the domain of the function cannot include ±1.

you 're wlecome! : )

cretdit to source

c. side angle side. u shares the same sides