Find the values of x and y to the nearest tenth. show your work

x = 18.5

y = 14.2

Step-by-step explanation:

The given triangle is labelled in the attached photo to make the explanations clearer.

The sum of the angles in a triangle is 180 degrees. Let the unknown angle be # degrees.

This means that

90 + 50 + 21 + # = 180

161 + # = 180

# = 180 - 161 = 19 degrees.

To determine y, we will apply trigonometric ratio

Cos # = adjacent/hypotenuse

Cos 19 = y/15

y = 15cos19 = 15 × 0.9445 = 14.2

To determine x, we will apply trigonometric ratio

Sin 50 = opposite/hypotenuse

Sin 50 = y/x = 14.2/x

xsin50 = 14.2

x = 14.2/sin50 = 14.2/0.7660 = 18.5

y = 14.18.

x = 18.51  to the nearest hundredth.

Step-by-step explanation:

The bottom right side angle is 90 - 50 - 21 =   19 degrees.

cos 19 = y / 15

y = 15 cos 19

= 14.18.

cos (19 + 21) =

cos 40 =  y / x

x = y / cos 40

=  14.18 / cos 40

= 18.51.

b. 153 students do not participate in sports and seventy-five 12th graders were surveyed

answer: 7 x 2/5 = 2.8 hours, is your answer. your welcome! : 3

step-by-step explanation: first work out how long it took to hose 1/7 of the lawn which is 2/5 hours. times that by 7 to get the whole lawn.

sorry i don't know the other answer. i didn't learn what a proportional relationship is.