ZA and ZB are complementary angles. If mZA = (7x + 23)° and

Mathematics

1 answer:

Marat540 [252]3 years ago

5 0

Answer:

ZB= 39°

Step-by-step explanation:

complementary angles are angles that add up to equal 90

equation: 7x + 23 + 5x + 19 = 90

add like terms: 12x + 42 = 90

subtract 42 from both sides: 12x = 48

divide both sides by 12: x = 4

plug in the value of x to the equation for ZB: 5(4) + 19

simplify: ZB= 39°

You might be interested in

Math help please, thx

pogonyaev

The answer is radical 9

5 0

3 years ago

How many different triangles can you make if you are given the measurements for two angles and the length of a shared side?

Ainat [17]

Answer:

Step-by-step explanation:

5 0

3 years ago

Add the following rational number =<br> 3/11 and -5/12

tatiyna

Answer:

-19/132

Step-by-step explanation:

To add fractions, find the lowest common multiple of the two denominators and multiply accordingly to make both denominators the same. In this case, the lowest common multiple of 11 and 12 is 132, so we need to multiply the first number by 12 and the second by 11. So we get $\frac{36}{132} + (-\frac{55}{132} )$ = $\frac{36-55}{132}$ = $\frac{-19}{32}$ $-\frac{19}{132}$