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Nutka1998 [239]
3 years ago
6

a store is having a sale where everything is discounted 30%. find the discount and the sales price if a customer buys an item th

at normally sells for $365.
Mathematics
1 answer:
vodomira [7]3 years ago
5 0
You get 30 percent off.

1 - 0.3 = 0.7

You only have to pay 70 percent of the real cost.

0.7 * 365 = 255.5
0.3 * 365 = 109.5

You get a discount of $109.50 and the sales price is $255.5

In this question, we're assuming sales tax is negligible.

If there is sales tax, just multiply everything by 1.08.

Have an awesome day! :)
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6 0
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Write the number below in expanded notation 75,966
aev [14]
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7 0
2 years ago
The average human gestation period is 270 days with a standard deviation of 9 days. The period is normally distributed. What is
Anna35 [415]

Answer:

Probability that a randomly selected woman's gestation period will be between 261 and 279 days is 0.68.

Step-by-step explanation:

We are given that the average human gestation period is 270 days with a standard deviation of 9 days. The period is normally distributed.

Firstly, Let X = women's gestation period

The z score probability distribution for is given by;

         Z = \frac{ X - \mu}{\sigma} ~ N(0,1)

where, \mu = average gestation period = 270 days

            \sigma = standard deviation = 9 days

Probability that a randomly selected woman's gestation period will be between 261 and 279 days is given by = P(261 < X < 279) = P(X < 279) - P(X \leq 261)

         P(X < 279) = P( \frac{ X - \mu}{\sigma} < \frac{279-270}{9} ) = P(Z < 1) = 0.84134

         P(X \leq 261) = P( \frac{ X - \mu}{\sigma} \leq \frac{261-270}{9} ) = P(Z \leq -1) = 1 - P(Z < 1)

                                                           = 1 - 0.84134 = 0.15866

<em>Therefore, P(261 < X < 279) = 0.84134 - 0.15866 = 0.68</em>

Hence, probability that a randomly selected woman's gestation period will be between 261 and 279 days is 0.68.

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3 years ago
HELP!!!!!!!!!!!
liraira [26]
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B.The means-to-MAD ratio is 4.

C.The distributions are different.

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8 0
3 years ago
Please work out -80 ÷ -8​
Daniel [21]

Answer:

10

Step-by-step explanation:

-80 / -8 = 10

the negatives cancel each other out

3 0
3 years ago
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