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Nataly_w [17]
3 years ago
12

How do i do this and what is it called?​

Mathematics
2 answers:
GenaCL600 [577]3 years ago
7 0
The answer will be Cosx =1/2 and -1

rusak2 [61]3 years ago
3 0

don't you have a text book with examples in it?

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A car run 3/4 mile per minute another car can run 4/5 mile per minute.what is the difference in speed in miles per hour?
dybincka [34]

Answer:

3 miles per hour

Step-by-step explanation:

We need to subtract the two numbers to find the difference in speeds

4/5 - 3/4

We need to get a common denominator of 20

4/5 *4/4 - 3/4 *5/5

16/20 - 15/20

1/20  

The car going 4/5 miles per minute is going 1/20 miles per minute faster than the car going 3/4 miles per minute.

The question asks for miles per hour, not miles per minute.  We know  that there are 60 minutes per hour.

1/20 miles per minute * 60 minutes / hour

60/20 miles/hour

3 miles/ hour

The car going 4/5 miles per minute is going 3 miles per hour faster than the car going 3/4 miles per minute.

3 0
4 years ago
Trevor spent $27 and now has no money left. What did he have before his purchase
Sav [38]

Answer:$27

Step-by-step explanation:

x-27=0

0+27=27

27-27=0

8 0
3 years ago
What is the result of subtracting the second equation from the first? <br> -4x-2y=-2<br> x-2y=9
diamong [38]

Answer:

x=2.2

y=-3.4

Step-by-step explanation:

subtract the second from the first

-5x=-11

x=2=2

substituting by x in the first equation

so y=-3.4

6 0
3 years ago
You might need:
aleksley [76]

Answer: ummm

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Polygon Q is a scaled copy of Polygon P. The value of x is 6, what is the scale factor?
ANTONII [103]

Answer:

B. 3/4

Step-by-step explanation:

I just did it and got it right

3 0
3 years ago
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