davidepitts davidepitts

11-09-2017
Mathematics

contestada

Suppose ∠A and ∠B are complementary angles, m∠A = (3x + 5)°, and m∠B = (2x – 15)°. Solve for x and then find m∠A and m∠B.

Respuesta :

kphung76127 kphung76127

11-09-2017

Complementary angles add to 90 degrees.

3x+5+2x-15=90
5x-10=90
5x=100
x=20 <=======

Plug in the value of x
3(20)+5
60+5
65= angle A <========

2(20)-15
40-15
25= angle B <========

Answer Link

Otras preguntas

Bruno's Lunch Counter is expanding and expects operating cash flows of $26,900 a year for 6 years as a result. This expansion requires $92,700 in new fixed asse

The surface area and average depth of the Pacific Ocean are 1.8 x 108 km^2 and 3.9 x 103 m, respectively. Calculate the volume of water in the ocean in liters.

Calculate these masses. (a) What is the mass of 6.00 cm3 of mercury, density= 13.5939 g/cm3? (b) What is the mass of 25.0 mL octane, density= 0.702 g/cm3?

A DVD is initially at rest. It then begins to rotate counterclockwise with constant angular acceleration . After the DVD has rotated through an angle , its angu

The body temperatures of adults are normally distributed with a mean of 98.6° F and a standard deviation of 0.60° F. If 25 adults are randomly selected, find th

If -2x+5x+3=12, find the value of x-8

A chemist mixes two liquids A and B to form a homogeneous mixture. The densities of the liquids are 2.0514 g/mL for A and 2.6678 g/mL for B. When she drops a sm

The earth has a mass ME = 5.98 · 1024 kg and the moon has a mass MM = 7.36 · 1022 kg. The distance from the center of the earth to the center of the moon is r =

How do you solve the very bottom question?

Which of the following is a concept of the cell theory? A. Only higher organisms are composed of cells. B. A cell is the basic structural and functional unit of