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Elenna [48]
3 years ago
10

I need help on number 2 through 9

Mathematics
1 answer:
Phantasy [73]3 years ago
5 0
3: terms/ 12, 8r, -3, s, -5, 15t coefficients/ 8r, 1s, 15t
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22 random samples were selected from a population that has a normal distribution the sample has a mean of 99 and a standard devi
olga2289 [7]

Answer:

(96.91, 101.09)

Step-by-step explanation:

To calculate the interval, you require the Z value at 95% confidence interval. The Z value is 1.96. The formula to calculate the confidence interval:

X-Zs/\sqrt{x} \\X+Zs/\sqrt{x}

Where X is the mean and s is the standard deviation and x the sample size:

99-1.96\cdot{5}/\sqrt{22} \\99+1.96\cdot{5}/\sqrt{22}

The interval is (96.91, 101.09)

3 0
3 years ago
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What is the distance of the trip if Ken drives 7 hours at the speed of 65mph?
Mila [183]

Answer:

455 miles

Step-by-step explanation:

Distance = Speed x Time

X = 65 x 7

X= 455 miles

If you are going 65 miles PER hour, then to find the total distance traveled, you'd mutiply the amount of time you have with how fast you are going.

5 0
3 years ago
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Write the equation of the line MN, which is formed by the points M(-3,5) and N(2,0)
belka [17]
The equation is <span>y = -x + 2</span>
3 0
3 years ago
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2 as rare percent is​
Vesna [10]

Answer:

what are you asking? Because I probably have the answer

4 0
3 years ago
In a certain animal species, the probability that a female will have 0, 1, 2, 3, or 4 offspring in a given year is 0.31, 0.21, 0
blsea [12.9K]

Answer:

1

Step-by-step explanation:

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8 0
2 years ago
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