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boyakko [2]
3 years ago
8

The sum of the measures of angle A and angle B equal 90 degrees. What is cos B​

Mathematics
1 answer:
stira [4]3 years ago
4 0

Answer:I think it is 12/25

Step-by-step explanation:

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Evaluate 3x^2- 9 when x=-2
murzikaleks [220]

Answer:

3

Step-by-step explanation:

We know x = -2, so we can substitute -2 in for x

3x^2- 9

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Solve the exponent first (PEMDAS)

3*4-9

Multiply next

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6 0
3 years ago
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Certain items are purchased jointly. If each person pays 8coins, the surplus is 3coins, and if each person gives 7coins, the def
kicyunya [14]

Answer:

  • 7 people
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Step-by-step explanation:

The problem statement tells us ...

  8x = y +3

  7x = y -4

Subtracting the second equation from the first gives ...

  x = 7

Then ...

  y = 7x +4 = 7·7 +4 = 53

There are 7 people, and 53 coins are required for purchase.

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3 years ago
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Need help ASAP! Due in 15 minutes
liberstina [14]

Answer:

The first one.

Step-by-step explanation:

7 0
2 years ago
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The product of a number and 7, decreased by the number is equal to 42. Find the number.
evablogger [386]

7
this is the answer, its pretty simple. I'm not sure the mathematical procedures but if you plug in 7 you get 49. Then all you got to do is subtract by 7, because the question states the number is the same. So basically,
7(7) - 7 = 42

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3 years ago
Hey guys its me again its me ghriuhr9h so more points yaaaaay
RideAnS [48]

Step-by-step explanation:

thanks for the free points!

have a great day!

5 0
3 years ago
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