Find the measurement of each angle 12, 13, 14

To solve these, you make use of the relationships you know between complementary and supplementary angles: complementary angles sum to 90°; supplementary angles sum to 180°.

12. The right-angle indicator in the corner shows you the sum of the angles is 90°.

... (15x -2)° +(7x +4)° = 90°

... 22x = 88 . . . . . . . . . . . . . divide by °, collect terms, subtract 2

... x = 4 . . . . . . . . . . . . . . . . divide by the coefficient of x

Now, we need to find the two angles:

13. Same deal. The angles add up to 90°.

... (x -10)° +(4x -10)° = 90°

... 5x = 110 . . . . . . . . . . . . . divide by degrees, add 20, collect terms

... x = 22 . . . . . . . . . . . . . . divide by the coefficient of x

Now, we need to find the two angles:

14. These supplementary angles add to 180°. The sum is different, but the method of solution is the same.

... (3x +17)° + ((1/2)x -5)° = 180°

... (3 1/2)x = 168 . . . . . . . . . . . . divide by °, subtract 12, collect terms

... x = 168/3.5 = 48 . . . . . . . . . . divide by the coefficient of x

Now, we need to find the two angles:

Note that the answers for each of these problems are easy enough to check. Add the angle values and make sure the sum is 90° or 180° as the problem requires.

answer: input the dimensions of the room to be painted. click the button to calculate the amount of paint and man-hours needed for this job.

interior paint coverage depends on the brand of paint used. the coverage amount is listed on the label of the paint can. use this to adjust the values in the paint coverage section below. paint usually is applied at 350 to 400 square feet per gallon (primer at 200 to 300 square feet per gallon).

step-by-step explanation:

d 600 because 15*10*2=300

300+300=600

step-by-step explanation: