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4 years ago

A water desalination plant can produce 2*10^6 gallons of water in one day. How many gallons can it produce in 79 days?

Mathematics

1 answer:

Serhud [2]4 years ago

5 0

The answer is = 158,000,000 Gallons and 1.58 × 10^8 in <span>scientific notation</span>

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Nitella [24]

Answer:

it would be c

Step-by-step explanation:

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3 years ago

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A sample of students from an introductory psychology class were polled regarding the number of hours they spent studying for the

Anni [7]

Answer:

$8.68,13.16$

Step-by-step explanation:

Hint- First we have to calculate the mean and standard deviation of the sample and then applying formula for confidence interval we can get the values.

Mean of the sample is,

$\mu=\dfrac{\sum _{i=1}^{24}a_i}{24}=\dfrac{262}{24}=10.92$

Standard deviation of the sample is,

$\sigma =\sqrt{\dfrac{\sum _{i=1}^{24}\left(x_i-10.92\right)^2}{24-1}}=5.6$

The confidence interval will be,

$=\mu \pm Z\dfrac{\sigma}{\sqrt{n}}$

Here,

Z for 95% confidence interval is 1.96, and n is sample size which is 24.

Putting the values,

$=10.92 \pm 1.96\cdot \dfrac{5.6}{\sqrt{24}}$

$=10.92 \pm 2.24$

$=8.68,13.16$

Confidence interval is used to express the degree of uncertainty associated with a sample.

95% confidence interval means that if we used the same sampling method to select different samples and calculate an interval, we would expect the true population parameter to fall within the interval for 95% of the time.

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3 years ago

1. Jillian Knits hats for her family and friends. In the week, she knits 4 hats, the next week, she has some help and together,

alexandr1967 [171]

Question 1: If shes making 4 hats alone and then Quadruples it shes making 16 hats per week if she quadruples it again she will be knitting 64 hats per week.

4x4=16

16x4=64hats

Question 2: There is an error because 5x5x5 = 5³

Question 3: 2⁴ - 8 x 2 / 4 = 12

2⁴ = 16 - 8 x 2 / 4

8x2 = 16

16/4 = 4

16-4 = 12

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3 years ago

Find the slope of the line

Reil [10]

The slope is negative, so the slope is negative. Using the rise over run formula, the slope of the line should be -1.

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3 years ago

Fatima has a car detailing service. She charges $15.00 for a vacuum, $40.00 for exterior wash and wax, and $60.00 for complete i

bezimeni [28]

Answer:

d 40 times 23=920

Step-by-step explanation:

if you did 60 times 15= 900

the highest is 920

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3 years ago