Which order pair matches this question when y equals 20? 3x+2y=58

a. (-20,6)
b. (6,20)
c. (20,6)
d. (6,-20)

Choice B. (6, 20)

Explanation:

Based on the answer choices, only choice B has a y coordinate of y = 20. So this must be the answer.

Let's plug in y = 20 to find x

3x+2y = 58

3x+2(20) = 58 replace y with 20

3x+40 = 58

3x+40-40 = 58-40 subtract 40 from both sides

3x = 18

3x/3 = 18/3 dividing both sides by 6

x = 6

We have x = 6 and y = 20 pair up to form the ordered pair (x,y) = (6,20) which confirms B is the correct answer.

hello from mrbilldoesmath!

answer:

the domain is the set { -2, 0, 2, 3}

discussion:

the domain is the set of x values in the ordered pairs (x,y). taking the x, or first component, of each ordered pair gives   -2, 0, 2, 3.

you,

mrb

11.2

step-by-step explanation:

when doing tangent the tangent of the angle is equal to the opposite side from the angle over the adjacent side to the angle.

tan43 = x / 12

move 12 over by multiplying each side by 12

12tan43 = x

x = about 11.2