3 years ago

Angles A and B are supplementary. Angle A has a measure of 80°. What is the measure of angle B?

Mathematics

2 answers:

zheka24 [161]3 years ago

6 0

Answer:

100

Step-by-step explanation:

I just took the test

olganol [36]3 years ago

5 0

Supplementary angles: sum of the angles measure to be 180º
180º-A= B
Plug in...
180º-80º= 100º

So, angle B must be 100 degrees.

You might be interested in

-3(8+j)=-16+5j<br> HELP ASAP NEED THIS DONE TONIGHT BEFORE MIDNIGHT

iogann1982 [59]

Answer:

j = -1

Step-by-step explanation:

Eliminate parentheses:

-24 -3j = -16 +5j

Add 3j+16

-8 = 8j

Divide by the coefficient of j.

-1 = j

8 0

2 years ago

Read 2 more answers

Right angled triangle calc: find c, a=38, b=22.99999

tekilochka [14]

A²+b²=c²
38²+22.99999²=c²
1,444+528.999540001=c²
1,972.9995400001=c²
$\sqrt{1,972.9995400001}$ =c
44.418459451=c

8 0

3 years ago

Factor the expression completely 18x2 - 32

Colt1911 [192]

Answer:

Step-by-step explanation:

18x2=36

36-32=4

4 0

3 years ago

What is the measure of angle BCD?<br><br> m∠BCD = degrees

ratelena [41]

Angle DAC = 180-25 = 155 degrees
Angle ABC = 180 - 146 = 34 degrees
Angle ADC = 180 - 149 = 31 degrees

ABCD is a quadrilateral and angles in quadrilateral add up to 360 degrees

Angle BCD = 360 - (155 + 34 + 31)
= 360 - 220
= 140 degrees

3 0

3 years ago

What is the factored form of the polynomial?

DENIUS [597]

Answer:

C. (x + 4)(x + 5).

Step-by-step explanation:

We need 2 numbers whose product is + 20 and whose sum is + 9.

They are + 5 and + 4 , so

x2 + 9x +20

= (x + 4)(x + 5).

5 0

3 years ago