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Mice21 [21]
3 years ago
12

Anyone know how to do this??

Mathematics
1 answer:
Ghella [55]3 years ago
6 0

Answer:

csc²(x)

Step-by-step explanation:

csc(x) = 1/sin(x)

sin²(x) + cos²(x) = 1

=> cos²(x) = 1 - sin²(x)

cos(2x) = cos²(x) - sin²(x) = (1 - sin²(x)) - sin²(x) =

= 1 - 2×sin²(x)

=> 2×sin²(x) = 1 - cos(2x)

sin²(x) = 1/2×(1-cos(2x))

=> 1 - cos(2x) = 2×(1/2×(1-cos(2x)) = 2×sin²(x)

=> 2 / (1-cos(2x)) = 2 / (2×sin²(x)) = 1/sin²(x) =

= 1/sin(x) × 1/sin(x) = csc(x)×csc(x) = csc²(x)

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A(b + 8) = ab + __<br> Answer?
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Answer:

ab + <u>8a</u>

Step-by-step explanation:

a(b + 8)

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ab + a8

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Best of Luck!

5 0
3 years ago
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There are 171 students in seventh grade. How much does money does Mr. Williams need to budget for the museum tickets and parking
Bumek [7]
<span> Here are the steps, you fill in the missing parts.
A. The given ratio is:
2 adults per 9 students or the fraction 2/9
Now put that fraction 2/9=x/171 in other words, how many adults (x) for 171 students?
can you cross multiply and get 9x=342
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B. for food multiply $6 times the total number of people.

C. for tickets multiply 4.50 times the student number and
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8 0
4 years ago
A train travels at a constant speed of 35 miles per hour how long does it take the train to travel 490 miles
charle [14.2K]
We have to write a proportion. We put 35 over 60 to show that 35 miles can go in every 60 minutes. Next to it we write another fraction and put 490 over x because we are trying to find how many MINUTES first. we multiply 490 by 60 which is 29400. Now we divide that by 35. we get 840 minutes. Now we convert this into hours by dividing it by 60 because there are 60 minutes in an hour. 840 divided by 60 is 14 hours. The answer is 14 hours.
5 0
3 years ago
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ryzh [129]

Answer:

B

Step-by-step explanation:

B because the y-intercept is (0,-1) and another point is (5,9). Using the slope formula, 10/5=2 so the right equation is B.

5 0
3 years ago
PLEASE HELP I NEED HELP, WILL MARK BRAINLIEST TO WHOEVER ANSWERS
Kobotan [32]
The corresponding ordered pairs are (0,4) (1,3) (2,2) and ( 4,0)
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Right two and up two.
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7 0
4 years ago
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