4 years ago

120 books increased by 55%

Mathematics

1 answer:

mash [69]4 years ago

8 0

55% of 120 is just 66
add that with 120, 186

so... 186 books

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A farmer has 5 times as many cows as horses.

Assoli18 [71]

Answer:

The correct answer is !40 cows and 28 Horses

Step-by-step explanation:

h+5h=168

6h=168

h=168/6

h=28 horses.

5*28=140 cows.

Proof:

28=140=168

168=168

7 0

3 years ago

A hotel claims that 8585% of its customers are very satisfied with its service. complete parts a through d below based on a ran

jek_recluse [69]

We can solve this problem using the binomial distribution. A binomial distribution<span> can be thought of as a success or failure outcome in an experiment or survey that is repeated multiple times.
</span>Probability function of binomial distribution has the following form:
$P= \frac{n!}{k!(n-k)!} p^k(1-p)^{n-k}$
p represents the probability of each choice we want. k is the number of choices we want and n is the total number of choices.
In our case p=0.85, k=5 and n=6.
We can now calculate the answer:
$P= \frac{6!}{5!(6-5)!} 0.85^5(1-0.85)^{6-5}=0.39$
The probability is 39%.
.

7 0

4 years ago

The sum of three numbers is 51 . the second number is 2 times the third. the third number is 9 more than the first. what are the

hammer [34]

X+y+z=51

y=2z
z=9+x

subsitute those

x+2z+9+x=51
x+2(9+x)+9+x=51
x+18+2x+9+x=51
4x+27=51
minus 27 both sides
4x=24
divide by 4
x=6

sub back

z=9+x
z=9+6
z=15

y=2z
y=2(15)
y=30

the numbers are
6,30,15

8 0

3 years ago

Read 2 more answers

Mr. Stewart wants to cut a board that is 34 inches long into four pieces that are the same length. How long will each board be a

Artist 52 [7]

Answer:

8.5

Step-by-step explanation:

divide 34 by 4 and it gives you 8.5

6 0

3 years ago

A line contains the points(– 4, 1) and (4,6). Decide whether or not each of these points is on the line.

iragen [17]

Answer:

its undefined so it wont be on the line

Step-by-step explanation:

6-1=5

4-4=0

5 0

3 years ago