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Free_Kalibri [48]

2 years ago

15

The complement of an angle is 53 degrees. What is the measure of an angle?

1 answer:

Vadim26 [7]2 years ago

6 0

37. complementary angles always add up to 90. just subtract 57 from 90 and you get 37.

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What is the equation of the line 2-3y = 18 in slope-intercept form?

il63 [147K]

The person above me got that horrible wrong, do not put that.

You also wrote the question wrong, please be more careful when posting.

x-3y=18

Move x to the other side by subtracting it since it’s positive.

-3y = -x + 18

Divide the whole equation by -3 to find the value of just 1 y.

-3y/-3 = -x/-3 + 18/-3

y = 1/3x -6

4 0

2 years ago

Find the measure of each angle indicated.

Ivanshal [37]

Answer:

3) B) 90°

4) A) 75°

Step-by-step explanation:

3) interior angles of a triangle =180°

So

40+50+?=180

? =180- 90

? =90

4) same rule

40+65+?=180

? =180 - 105

? = 75

8 0

2 years ago

18. A set of data has a sample mean of 65.4 and a standard deviation of 1.2. If the sample size is 45, what is the 99% confidenc

Agata [3.3K]

Given:

Sample mean = 65.4

Standard deviation = 1.2

Sample size = 45

Confidence level = 99%

To find:

The confidence interval.

Solution:

The formula for confidence interval is

$CI=\overline{x}\pm z^*\dfrac{s}{\sqrt{n}}$

where, $\overline{x}$ is sample mean, z* is confidence value, s is standard deviation and n is sample size.

Confidence value or z-value at 99% = 2.58

Putting the given in the above formula, we get

$CI=65.4\pm 2.58\times \dfrac{1.2}{\sqrt{45}}$

$CI=65.4\pm 0.46$

$CI=65.4-0.46\text{ and }CI=65.4+0.46$

$CI=64.94\text{ and }65.86$

Therefore, the correct option is D.

5 0

2 years ago

30% of 40% is equal to 20% of what?

ICE Princess25 [194]

I think its the answer is 10%

3 0

2 years ago

Please answer !!!!!!!!!

xxMikexx [17]

Answer:

answer is b

Step-by-step explanation:

look at the picture

3 0

3 years ago

Read 2 more answers