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4 years ago

If 5 apples cost $2.00, how much will 15 apples cost?

Mathematics

2 answers:

Lemur [1.5K]4 years ago

8 0

$6.00 because you multiply 3 sets of apples with $2

SpyIntel [72]4 years ago

6 0

$6. Hope this helps;)

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The monthly electrical utility bills of all customers for the Far East Power and Light Company are known to be normally distribu

omeli [17]

Answer: 0.9996

Step-by-step explanation:

Given : The monthly electrical utility bills of all customers for the Far East Power and Light Company are known to be normally distributed with a mean $\mu=$\ 87.00$

Standard deviation : $\sigma=$\ 36.00$

Sample size : n=100

Let X be the random variable that represents the electricity utility bill for a randomly selected month .

z-score : $z=\dfrac{X-\mu}{\dfrac{\sigma}{\sqrt{n}}}$

For X = $75.00

$z=\dfrac{75.00-87.00}{\dfrac{36}{\sqrt{100}}}\approx-3.33$

Now, the probability that the average bill for those sampled will exceed $75.00 will be :-

$P(X>75)=P(z>-3.33)=1-P(z\leq-3.33)\\\\=1- 0.0004342=0.9995658\approx0.9996$

Hence, the probability that the average bill for those sampled will exceed $75.00 =0.9996

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3 years ago

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svetoff [14.1K]

I think it’s b sorry if I’m wrong

5 0

3 years ago

The figure below shows a window that is made from a part of a square and a part of a circle,

Dovator [93]

Answer:

a. perimeter is 112

b. area is 784

5 0

3 years ago

Expand 2(c + 4).<br> Please help me

san4es73 [151]

Answer:

2c+8

Step-by-step explanation:

this is because we are using 2 to open up the brackets. You will multiply c by 2 and 4 by 2.

8 0

3 years ago

Genise is making cookies. She needs 1 2/3 cups of flour for one batch,but she wants to make 2 1/3 batches. write an equation tha

Maksim231197 [3]

Answer:

Equation: (1 2/3)(2 1/3) = x

Answer: 3 8/9 cups

Step-by-step explanation:

x represents the amount of flour she will need in cups.

To solve, convert the mixed numbers to improper fractions and multiply...

1 2/3 becomes 5/3

2 1/3 becomes 7/3

Now we have

(5/3)(7/3) = x

35/9 = x

35/9 is 3 8/9 as a mixed number

7 0

3 years ago