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3 years ago

12

A fair coin is tossed 5 times in a row. The exact probability of the coin landing heads exactly 2 times is

1 answer:

Andreas93 [3]3 years ago

6 0

If its a fair 2 sided coin thats flipped tice the poibillity of getting heads or tails would be 2 and 1/2 so it would be 2 1/2 over 5

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kow [346]

5.3 or 5.30 it doesn't matter how many 0's you add

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3 years ago

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Kevin needs 1,000 ribbons for a school event. Each ribbon has to be 2.25 feet long. Tell how Kevin can use a pattern to find how

marysya [2.9K]

2.25 x 1000 = 2250.

That's how much yds of ribbons he needs.

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3 years ago

What is the surface area of the prism?

kow [346]

$The\ surface\ area:A_s=2B+(S_1+S_2+S_3)\cdot H\\B=\frac{12\cdot5}{2}=\frac{60}{2}=\boxed{30\ (yd^2)}\\\\S_1=5yd;\ S_2=12yd;\ S_3=13yd;\ h=8yd\\\\therefore\\\\A_s=2\cdot30+(5+12+13)\cdot8=60+30\cdot8=60+240=\boxed{300\ (yd^2)}$ $Volume\ of\ the\ prism:V=B\cdot H\\\\B\ (base)\ it's\ a\ right\ triangle:B=\frac{12\cdot5}{2}=\frac{60}{2}=\boxed{30\ (yd^2)}\\\\H=8yd\\\\therefore\\\\V=30\cdot8=\boxed{240\ (yd^2)}\leftarrow\boxed{C}$

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3 years ago

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What is -14+5k-3= simplifying

andrew11 [14]

Answer:

5k-17

Step-by-step explanation:

-14+5k-3=5k-14-3=5k-17

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3 years ago

What is the fifth root of 16 times the fifth root of 8

Lena [83]

Answer:

2.63901582155

Step-by-step explanation:

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