Two angles are complementary. The measure of ∠ABC is x° and the measure of ∠DBC is (3x + 10)°. What is the value of x?

Mathematics

2 answers:

beks73 [17]2 years ago

5 0

42.5 I think

3x+10+x=180
4x=170
170/4=x
X=42.5

WARRIOR [948]2 years ago

3 0

Answer:

x= 20

Step-by-step explanation:

Information needed:

Complementary angles add up to 90°

Angle ABC= x°

Angle DBC= (3x+10)°

Equation:

x+(3x+10)= 90

Solve:

x+(3x+10)= 90

x+3x+10= 90

4x+10= 90

-10 -10

4x= 80

/4 /4

x= 20

You might be interested in

HELP ME ASAP!!! PLEASE

Sloan [31]

B, 190.
First you find the area of the circle (pi times radius squared) however, since you are given diameter, you must find radius by dividing diameter by 2. So, your radius is 9, then you plug it into the formula and you get 254.5. After multiplying this by 0.75 because you only want to find 75 percent of the area, you get the answer of 191m

4 0

2 years ago

Four friends decided to host the grand opening of their bar on St. Patrick's Day. They built their bar's at different distances

ki77a [65]

Doug's bar is 50 km away from Ben's bar. let me know if I need to explain.

8 0

2 years ago

What is the best estimate of the sum of the fraction? 31/4 +17/3 +8/18

Bogdan [553]

The best estimate of the sum of the expression given is $\rm 13 \dfrac {31}{26}$