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4 years ago

(0.624, 3.91)

Mathematics

1 answer:

Agata [3.3K]4 years ago

3 0

(0.624, 3.91)

The interval is formatted as

(x, y)

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A roller coaster starts from a desk at an elevation of 20 feet above the ground on the first Hill and corn 78 ft and then it dro

AlekseyPX

Answer:

6 ft above ground.

Step-by-step explanation:

The roller coaster starts from an elevation of +20 feet from the ground.

Now, it first corns 78 ft, then drops 85 ft.

So, the final elevation will be (20 + 78 - 85) = 13 feet above the ground on the second hill.

Again, it climbs 103 ft. and drops 110 ft. and finally his elevation will be = 13 + 103 - 110 = 6 ft above ground. (Answer)

3 0

4 years ago

Water use in the summer is normally distributed with a mean of 311.4 million gallons per day and a standard deviation of 40 mill

r-ruslan [8.4K]

Answer: 0.965

Step-by-step explanation:

Given : Water use in the summer is normally distributed with

$\mu=311.4\text{ million gallons per day}$

$\sigma=40 \text{ million gallons per day}$

Let X be the random variable that represents the quantity of water required on a particular day.

Z-score : $\dfrac{x-\mu}{\sigma}$

$\dfrac{350-311.4}{40}=0.965$

Now, the probability that a day requires more water than is stored in city reservoirs is given by:-

$P(x>350)=P(z>0.965)=1-P(z$

We can see that on comparing the above value to the given P(X > 350)= 1 - P(Z < b) , we get the value of b is 0.965.

4 0

3 years ago

Neglecting air resistance, an object in free fall accelerates at 32 feet per second squared. So the velocity of the object t sec

postnew [5]

The correct answer is B

5 0

3 years ago

Read 2 more answers

10 1/2 in simplest radical form

VARVARA [1.3K]

Answer:

21/2

Step-by-step explanation:

10*2+1/2=21/2

use the formula

a $\frac{b}{c}$ = $\frac{a*c+b}{c}$

7 0

4 years ago

Please helpppppp me

alex41 [277]

Answer:

B. $4 \times 10^{12}$

Step-by-step explanation:

$(6 \times 10^{8}) \div (1.5 \times 10^{-4}) =$

$= \dfrac{6 \times 10^{8}}{1.5 \times 10^{-4}}$

$= \dfrac{6}{1.5} \times \dfrac{10^{8}}{10^{-4}}$

$= 4 \times 10^{8 - (-4)}$

$= 4 \times 10^{12}$

7 0

3 years ago