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olga55 [171]
2 years ago
8

What is the probability of flipping 3 coins and having exactly two of them land on tails?

Mathematics
1 answer:
Drupady [299]2 years ago
4 0

Step-by-step explanation:

We can also simply calculate the total number of possible outcomes of 3 coin flips, meaning the overall probability of exactly 2 coin flips out of 3 being tails is 37.5%.

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Bobby’s bedroom is 15 feet in length.how long is his bedroom on a scale drawing that uses a scale of 1/2 in = 3 feet
kolezko [41]

Answer:

2.5 or 2 1/2

Step-by-step explanation:

divide 15 by 3 and you'll get 5. multiply 1/2 by 5 and you get 2.5

4 0
2 years ago
Which of the following quartic functions has x=-1 and x=-2 as its only two real zeros
Brums [2.3K]
Quartic is 4th degree
the factors of an equation with roots r1,r2 is
(x-r1)(x-r2)
4th degree
it could be
(x-r1)¹(x-r2)³ or
(x-r1)²(x-r2)² or
(x-r1)³(x-r2)¹


roots or zeroes at x=-1 and x=-2
(x-(-1)) and (x-(-2))
(x+1) and (x+2)

the function could be factored into
(x+1)¹(x+2)³ or
(x+1)²(x+2)² or
(x+1)³(x+2)¹

expanded would be
x⁴+7x³+18x²+20x+9 or
x⁴+6x³+13x²+12x+4 or
x⁴+5x³+9x²+7x+2
one of those is the answer

4 0
3 years ago
Find the surface area. ​
Marysya12 [62]

let's notice, this is a Cube, namely all equal sides, and mind you it has 6 sides, Check the picture below.

\stackrel{\textit{area of all 6 sides}}{6(9\cdot 9)\implies 486}

8 0
3 years ago
HELP PLEASE!! i just need #8 through #10
Nady [450]

Answer:

ok hi 4___________$_______

6 0
2 years ago
The library charges $2 to use the copier and $0.99 for each paid copied.if Jerry paid the librarian $8.93 ,how many copies did H
alexandr402 [8]
First subtract the 2 dollars then you will have 6.39 then divid by the .99 wich gives you 6.45 which you round up to 7 copious because you can’t have a 1/2 of a copy
6 0
3 years ago
Read 2 more answers
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