Ask question

Ask question

All categories

Vedmedyk [2.9K]

3 years ago

12

Find the measurements of ZBOC.

1 answer:

KengaRu [80]3 years ago

8 0

Answer:

∠ BOC = 40°

Step-by-step explanation:

∠ AOC = 90° , then

5x + 2x + 20 = 90

7x + 20 = 90 ( subtract 20 from both sides )

7x = 70 ( divide both sides by 7 )

x = 10

Then

∠ BOC = 2x + 20 = 2(10) + 20 = 20 + 20 = 40°

You might be interested in

Calculating the degrees of freedom, the sample variance, and the estimated standard error for evaluations.

ki77a [65]

Answer:

The variance is $\sigma ^2 =25$

Step-by-step explanation:

From the question we are told that

The sample size is n = 21

The sum of squares is $SS = 500$

Generally the variance is mathematically represented as

$\sigma ^2 = \frac{SS}{n- 1}$

substituting values

$\sigma ^2 = \frac{ 500}{21- 1}$

$\sigma ^2 =25$

4 0

3 years ago

Evaluate the expression <br> (-32)^3/5

alina1380 [7]

Answer:

-8

Step-by-step explanation:

x^(m/n)= $\sqrt[n]{x}^m$

(-32)^(3/5)

= $\sqrt[5]{(-32)} ^3$

=(-2)^3

=-8

6 0

3 years ago

A) y=5x +70<br><br><br> B) y = 0.2x + 650<br><br><br> C) y = 0.5x + 700<br><br><br> D)y=0.75x + 500

Licemer1 [7]

Answer:

um

Step-by-step explanation:

7 0

3 years ago

I WILL GIVE BRAINLY HELP ME PLSSS

Gnom [1K]

Answer:

I believe (D)

Step-by-step explanation:

-5x + 7 = -13

-7 -7

-5x = -20

-5/-5 -20÷-5

x=4

3 0

3 years ago

Read 2 more answers

I NEED HELP PLEASE!!!!

antoniya [11.8K]

B. 105
i believe it should be that

7 0

4 years ago

Read 2 more answers