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damaskus [11]
3 years ago
15

3) Find “?” 89 A) 91° C) 136° B) 105° D) 100°

Mathematics
2 answers:
UkoKoshka [18]3 years ago
8 0
I think it’s 91 because it’s just over a right angle
Andre45 [30]3 years ago
4 0

Answer:

A.

Step-by-step explanation:

A.

Reason 1: 180 - 89 = 91

Reason 2: It's close to 90 degrees

Hope that helps!

You might be interested in
4. Amazon executives believe that at least 70% of customers would return a product 2 days after it arrives at their home. A samp
inysia [295]

Using the <u>normal distribution and the central limit theorem</u>, it is found that there is a 0.1635 = 16.35% probability of a sample result with 68% or fewer returns prior to the third day.

In a normal distribution with mean \mu and standard deviation \sigma, the z-score of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

  • It measures how many standard deviations the measure is from the mean.  
  • After finding the z-score, we look at the z-score table and find the p-value associated with this z-score, which is the percentile of X.
  • By the Central Limit Theorem, for a proportion p in a sample of size n, the sampling distribution of sample proportions has mean \mu = p and standard error s = \sqrt{\frac{p(1 - p)}{n}}

In this problem:

  • Sample of 500 customers, hence n = 500.
  • Amazon believes that the proportion is of 70%, hence p = 0.7

The <u>mean and the standard error</u> are given by:

\mu = p = 0.7

s = \sqrt{\frac{p(1 - p)}{n}} = \sqrt{\frac{0.7(0.3)}{500}} = 0.0205

The probability is the <u>p-value of Z when X = 0.68</u>, hence:

Z = \frac{X - \mu}{\sigma}

By the Central Limit Theorem

Z = \frac{X - \mu}{s}

Z = \frac{0.68 - 0.7}{0.0205}

Z = -0.98

Z = -0.98 has a p-value of 0.1635.

0.1635 = 16.35% probability of a sample result with 68% or fewer returns prior to the third day.

A similar problem is given at brainly.com/question/25735688

7 0
2 years ago
Which of these correctly explains the solution of the system of equations shown
borishaifa [10]

The solution of the system of equations is the point (-6, 6), so the correct option is B.

<h3>Which statements are correct about the system of equations?</h3>

Here we have the system of equations:

2x + 3y = 6

x + 3y = 12

First, let's write these two lines in the slope-intercept form:

y = (6 - 2x)/3 = 2 - (2/3)*x

y = (12 - x)/3 = 4 - (1/3)*x

Now, because "y" is the represents the same variable in both equations, we can write:

2 - (2/3)*x = y = 4 - (1/3)*x

Now we can solve that for x.

2 - (2/3)*x =  4 - (1/3)*x

2 - 4 = (2/3)*x - (1/3)*x

-2 = (1/3)*x

3*(-2) = x = -6

Now, to get the y-value of the solution we can evaluate any of the two lines in x = -6, evaluating the first we get:

y =  4 - (1/3)*x = 4 - (1/3)*(-6) = 4 + 2 = 6

Then the solution of the system is the point (-6, 6). Then the correct statement is B:

"The values of x= -6 and y= 6 satisfy both the equations; therefore, (-6, 6) is the solution."

If you want to learn more about systems of equations:

brainly.com/question/13729904

#SPJ1

8 0
2 years ago
Find the sum: 4 radical 3 + 11 radical 12
Ksenya-84 [330]

Answer:

26\sqrt{3}

Step-by-step explanation:

We want to find 4\sqrt{3} +11\sqrt{12}. 11\sqrt{12} can be written as 11\sqrt{4*3}=11*\sqrt{4} *\sqrt{3}=11*2*\sqrt{3}=22\sqrt{3}, so we can now write our original equation as: 4\sqrt{3}+22\sqrt{3}.

We can combine like terms: 4\sqrt{3}+22\sqrt{3}=26\sqrt{3}

Hope this helps!

6 0
3 years ago
Read 2 more answers
The tape diagram a way to model 5/8x11
vovikov84 [41]

Answer:

55/8

Step-by-step explanation:

here u gooo good luck

6 0
2 years ago
Find the volume of the cylinder. leave your answer in terms of 3.14
Lapatulllka [165]

Answer:

3.14 * r^2 * h

Step-by-step explanation:

7 0
3 years ago
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