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adelina 88 [10]
2 years ago
6

What is 5x15= what help me please to hard

Mathematics
1 answer:
Rom4ik [11]2 years ago
8 0

Answer:

75

Step-by-step explanation:

You might be interested in
In a certain country, the average age is 31 years old and the standard deviation is 4 years. If we select a simple random sample
KengaRu [80]

Answer: 0.0062

Step-by-step explanation:

Given : Mean : \mu=\ 31

Standard deviation :\sigma= 4

Sample size : n=100

Assume that age of people in the country is normally distributed.

The formula to calculate the z-score :-

z=\dfrac{x-\mu}{\dfrac{\sigma}{\sqrt{n}}}

For x = 32

z=\dfrac{32-31}{\dfrac{4}{\sqrt{100}}}=5

The p-value = P(x\geq32)=P(z\geq5)

=1-P(z

Hence, the the probability that the average age of our sample is at least =0.0062

3 0
4 years ago
What is the answer for -31 = 9+ 8x? Step by Step.
ryzh [129]

Answer:

<em>-5</em>

Step-by-step explanation:

-31=9+8x

we need to isolate the variable by moving 8x to the left side and -31 to the right side....therefore 8x becomes a negative, -8x, and -31 a positive....so now it would look like...

-8x=9+31

then we work the right side out...

-8x=40

to get x we need to divide -8x by 8 so we do the same to the right side as well....

-8x=40

÷8 ÷8

so...

<em>x=-5</em>

hope this helped you- have a good day bro cya)

4 0
3 years ago
162 is what percent of 200?
inysia [295]
162 is eighty-one percent of 200
7 0
4 years ago
Read 2 more answers
#8
aleksklad [387]

Answer:

32 pints

Step-by-step explanation:

1 pint is 2 cups.  so 64/2= 32

4 0
3 years ago
A truck is carrying 8 cars weighing an average of 4500 pounds each. What is the total weight in tons of the cars on the truck?
erma4kov [3.2K]

Answer:

The total weight in tons the cars on the truck= 18 tons.

Step-by-step explanation:

5 0
3 years ago
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