HELP ME PLEASEEE ITS I HAVE TO DO IT FAST PLEASEE

a) x and 2x are complementary angles.

b) x = 30

Step-by-step explanation:

x + 2x = 90 (Complementary angles)

3x = 90

x = 30

its 30

Step-by-step explanation:

there are 180 degrees in that shape. the right angle is 90 degrees. leaving only 90 for both x and 2x. if you do x times 2 using 30 as x you get 60. if you add 60 to x, and we are using 30 as x you get 90. therefore adding 90 and 90 you get 180 which is the total degrees of the shape.

6, 10

9, -13

12, -21

18, -23

step-by-step explanation:

you just add 6 to the x-coordinate and subtract 10 from the y-coordinate.

answer: 1,380

step-by-step explanation:

1: you turn %15 into a decimal by moving the decimal point two places to the left.

2: and then you multiply .15 by 1,200 , which will get you 180.00

3: from there you will add 180 to 1,200

4: which will get you 1,380

hope it *im kind of slow so idk if my answer is right*