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Cloud [144]
3 years ago
8

A stack of 20 cards is numbered 1 through 20. One card is selected at random. What is the probability that the card is less than

8?
Mathematics
1 answer:
kvasek [131]3 years ago
5 0

Answer:

40%

Step-by-step explanation:

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The answer the the question is A.
5 0
3 years ago
F '(x) = sin(x) - 65<br> What is f(x)?
irakobra [83]

Hello,

f'(x) = sin(x) - 65 → f(x) = -cos(x) - 65x

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1 year ago
Find the height of an equilateral triangle with sides of length 12
MAVERICK [17]

Answer:

Answer

sqrt(108)

6 sqrt(3)

10.3923

I don't know which answer you  want.

Step-by-step explanation:

  • Drop a perpendicular from the top angle to the base.
  • The base is cut into 2 equal parts.
  • Each part is 12/2 = 6
  • The perpendicular, as its name implies, meets the base at 90o.
  • You can use the Pythagorean Theorem to find the height.

h^2 = side^2 - (1/2 b)^2

h^2 = 12^2 - 6^2

h^2 = 144 - 36

h^2 = 108

Take the square root of both sides

h = sqrt(108)

h = sqrt(2*2 * 3 * 3 * 3)

h = 2 * 3 sqrt(3)

h = 6sqrt(3)

h = 6 * 1.7321

h = 10.3923

4 0
3 years ago
Read 2 more answers
Zak has 3/5 pack of pencils. Of these, 2/7 are blue. How many blue pencils does Zak have?
Basile [38]

Answer:

11/35

Step-by-step explanation:

First, you would have to make a common denominator. To do this, multiply these 2 denominator, 5 and 7. You should get 35. Then, you would have to make the numerator equal to the denominator. In this case, multiply 3 to 7 and 2 to 5. Now you have 21/35 and 10/35. Now subtract 21 from 10, and simplify if needed. I hope this helps!

7 0
3 years ago
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Plsssssssssssssss help with 11
alina1380 [7]

Answer:

1 = $3.50

( I tried my best)

5 0
2 years ago
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