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Artyom0805 [142]
3 years ago
10

Help me w this multiple choice!

Mathematics
1 answer:
olga2289 [7]3 years ago
3 0

Answer:

D

Step-by-step explanation:

\sin(30)  =  \frac{n}{ \frac{10 \sqrt{3} }{3} }   \\ 0.5 =  \frac{n}{5.77} \\ n = 2.88 =  \frac{5 \sqrt{3} }{3}

\cos(30)  =  \frac{m}{ \frac{10 \sqrt{3} }{3} }  \\ 0.866 =  \frac{m}{5.77}  \\ m = 5

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What is the volume of the right rectangular prism <br> 16in<br> 64in<br> 140in<br> 166in
nexus9112 [7]

Answer:

140 inches

Step-by-step explanation:

7 x 4 x 5 = 140

8 0
4 years ago
If :
aalyn [17]
So there are 38 +32 = 70 and for the rest 30 we can assuming 15 + 8 +7 

38+32+15+8+7=100

hope this will help you 
3 0
3 years ago
Consider the diagram below where measure of angle CDE=127 degrees.
Masja [62]

Answer:

A, C, and E.

Step-by-step explanation:

thats just the answer. i dont make the rules.

5 0
4 years ago
A certain psychological test measures empathy and emotional intelligence. The mean and standard deviation of the difference, D,
Triss [41]

Answer: b and d

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6 0
2 years ago
A friend has a 82% average before the final exam for a course. That score includes everything but the final, which counts for 30
Damm [24]
So you want to set up an equation for a weighted average. You know the final is 30% of the grade, so everything else is 70%. This gives you:

(Final)(.30) + (other grades)(.70) = course grade

The best grade the student can get would be if they get a hundred on the final, since that’s the best score you can make on the final. Then,

(100)(.30) + (82)(.70) = course grade
30 + 57.4 = course grade = 87.4 Which, If you round, the student would get an 87.

For the last part, we use the same equation, just filling in different parts.

(Final)(.30) + (other grades)(.70) = course grade

This time, we don’t know the grade for the final, but we know the course grade.

(Final)(.30) + (82)(.70) = 75
(Final)(.30) + 57.4 = 75
(Final)(.30) = 17.6
Final = (17.6)/(.30)
Final = 58.667 Which is approx a 59.
4 0
3 years ago
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