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Lunna [17]
2 years ago
9

Which one is it A, B, C, or D?

Mathematics
1 answer:
Molodets [167]2 years ago
8 0
The answer is A so yeaaaaaa
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Please help, question is above in picture
Serhud [2]
-3.5 * 2 = -7
-3.5 * 3n = 10.5n

So there is (-7 - 10.5n) -2.5n

Now combine like terms
10.5n - 2.5n = 8n

ANSWER = -7 + 8n
4 0
3 years ago
What is the answer because my son is strugilling
ale4655 [162]

Try talking to him cause idk if I am wrong

7 0
2 years ago
What are the steps for using a compass and straightedge to construct a regular hexagon inscribed in a circle?
N76 [4]
The steps to construct a regular hexagon inscribed in a circle using a compass and straightedge are given as follows:

1. <span>Construct a circle with its center at point H.

2. </span><span>Construct horizontal line l and point H on line l

3. </span>Label the point of intersection of the circle and line l to the left of point H, point J, and label the point of intersection of the circle and line l to the right of point H, point K.<span>

4. Construct a circle with its center at point J and having radius ​ HJ ​ . Construct a circle with its center at point K having radius ​ HJ

5. </span><span>Label the point of intersection of circles H and J that lies above line l, point M, and the point of their intersection that lies below line l, point N. Label the point of intersection of circles H and K that lies above line l, point O, and the point of their intersection that lies below line l, point P.

6. </span><span>Construct and JM⎯⎯⎯⎯⎯, MO⎯⎯⎯⎯⎯⎯⎯, OK⎯⎯⎯⎯⎯⎯⎯, KP⎯⎯⎯⎯⎯, PN⎯⎯⎯⎯⎯⎯, and NJ⎯⎯⎯⎯⎯ to complete regular hexagon JMOKPN .</span>
3 0
2 years ago
A researcher is interested in estimating the mean weight of a semi tracker truck to determine the potential load capacity. She t
FinnZ [79.3K]

Answer:

(19229.11 ,20770.89)

Step-by-step explanation:

We are given the following information:

Sample size, n = 17

Sample mean = 20,000 pounds

Sample standard deviation = 1,500 pounds

Confidence level = 95%

Significance level = 5% = 0.05

95% Confidence interval:  

\bar{x} \pm t_{critical}\displaystyle\frac{s}{\sqrt{n}}  

Putting the values, we get,  

t_{critical}\text{ at degree of freedom 16 and}~\alpha_{0.05} = \pm 2.119  

20000 \pm 2.119(\displaystyle\frac{1500}{\sqrt{17}} ) = 20000 \pm 770.89 = (19229.11 ,20770.89)  

4 0
3 years ago
Which statement are correct about the two-way frequency?
agasfer [191]
A. False. The data is quantitative because we're dealing with numeric values instead of things like names, colors, etc.

B. False. The row categories are "students" and "teachers"

C. True. This value (2) is in the "teachers" row and "does not wear glasses" column.

D. False. The value 32 represents the number of students who wear glasses. See row1, column1

E. True. Look at the last value of the "teachers" row. 

===================================================

In summary, the answers are: C and E
5 0
3 years ago
Read 2 more answers
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