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Alexus [3.1K]
2 years ago
14

I don’t know what to do please help

Mathematics
1 answer:
Marrrta [24]2 years ago
4 0

Answer:

cos(A)=√21/5

Step-by-step explanation:

Use the definition of each function as well as the Pythagorean Theorem.

Hope it helps :>

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How do u do 183% in to a decimal and fraction
TEA [102]
Decimal: 1.83
fraction: 183/1000
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3 years ago
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A train travels at a constant rate of 45 miles per hour.
givi [52]
A. d=45t
b. 112.5 miles. 112.5=45•2.5
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) A coin collection consisting of pennies, dimes, and quarters totals 45 coins. The number of
Sloan [31]

9514 1404 393

Answer:

  $7.14

Step-by-step explanation:

Let p, d, q represent the numbers of pennies, dimes, and quarters in the collection, respectively.

  p + d + q = 45 . . . . . . . . there are 45 coins in the collection

  2p +5 = q . . . . . . . . . . . . 5 more than twice the number of pennies

  p + 4 = d . . . . . . . . . . . . . 4 more than the number of pennies

Substituting the last two equations into the first gives ...

  p +(p +4) +(2p +5) = 45

  4p = 36 . . . . . . . . . . . . . subtract 9

  p = 9 . . . . . . . . . . . divide by 4

  d = 9 +4 = 13

  q = 2(9) +5 = 23

The value of the collection is ...

  23(0.25) +13(0.10) +9(0.01) = 5.75 +1.30 +0.09 = 7.14

The coin collection is worth $7.14.

5 0
3 years ago
A cylinder of height 16 is inscribed in a sphere of radius 10. What is the radius of the cylinder?
alexdok [17]

Answer:

6

Step-by-step explanation:

10² = r² + 8²

100 = r² + 64

r² = 36

r = 6

7 0
3 years ago
The value of y varies directly with x. If x = 6, then y = 27. What is the value of y when x = 10 ?
Alik [6]
B - 45 because 27 divided by 6 is 4.5 and then 10x4.5=44
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2 years ago
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