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Alexeev081 [22]
3 years ago
6

Evaluate the expression for the given value of the variables.

Mathematics
1 answer:
Dominik [7]3 years ago
6 0
0.9(13)-2.7(2)
11.7-5.4
=6.3
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Mars2501 [29]
The surface area will be 210 square meters. Hope it help!
8 0
3 years ago
YOU GET THIRTEEN POINTS Choose the number sentence whose product is 3.62
wlad13 [49]

Answer:

C.) 4 x 0.905

Step-by-step explanation:

4 x 0.905 = 3.62

Thus, The number sentence whose product is 3.62 is 4 x 0.905

<u>-TheUnknownScientist</u>

5 0
3 years ago
36 out of 100 randomly selected taxpayers knew about tax incentives for installing energy-saving furnaces. Find a 90% confidence
tresset_1 [31]

Answer:

The 90% confidence interval for the population proportion who knew about the incentives is (0.28, 0.44).

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

z is the zscore that has a pvalue of 1 - \frac{\alpha}{2}.

For this problem, we have that:

n = 100, \pi = \frac{36}{60} = 0.6

90% confidence level

So \alpha = 0.1, z is the value of Z that has a pvalue of 1 - \frac{0.1}{2} = 0.95, so Z = 1.645.

The lower limit of this interval is:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.36 - 1.645\sqrt{\frac{0.36*0.64}{100}} = 0.28

The upper limit of this interval is:

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.36 + 1.645\sqrt{\frac{0.36*0.64}{100}} = 0.44

The 90% confidence interval for the population proportion who knew about the incentives is (0.28, 0.44).

7 0
4 years ago
Which of the following is not an undefined term?<br><br> point<br> ray<br> line<br> plane
Mila [183]
<span>There are three undefined terms in geometry. These are points, line, and plane. Among the given choices, there is only one which is not an undefined term and that is ray. Ray is a part of a line that has an enpoint in one side and extends indefinitely on the opposite side. Hence, the answer is the second choice. </span>
7 0
4 years ago
Read 2 more answers
What is the value of y?<br> A. 83<br> B. 89<br> C. 96<br> D. 97
Readme [11.4K]

Answer:

<u>A. 83</u> is the correct option.

Step-by-step explanation:

all angles of a triangle are always equal to 180.

46 + 51 + y = 180

97 + y = 180

180 - 97 = <u>83</u>

Have a nice day! :-)

7 0
3 years ago
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