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3 years ago

An elevator travels 310 feet in 10 seconds. At that speed, how far can't his elevator travel in 12 seconds?

Mathematics

1 answer:

mixer [17]3 years ago

7 0

It CAN travel 372 feet in 12 seconds. ( sorry if wrong )

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Please help me and thank you if you did help me

Luba_88 [7]

12 to 16 because all ratios are equivalent

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3 years ago

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Suppose 2' is a normally distributed random variable with ft = 10.3 and 0 = 3.8. For the following probability,draw an appropria

TiliK225 [7]

GIVEN

The following values are given:

$\begin{gathered} \mu=10.3 \\ \sigma=3.8 \end{gathered}$

SOLUTION

The z-score for the x values 9 and 14 can be calculated using the formula:

$z=\frac{x-\mu}{\sigma}$

For x = 9:

$\begin{gathered} z=\frac{9-10.3}{3.8} \\ z=-0.34 \end{gathered}$

For x = 14:

$\begin{gathered} z=\frac{14-10.3}{3.8} \\ z=0.97 \end{gathered}$

The probability can be calculated as follows:

$P(9\le x\le14)=Pr(-0.34The region that represents the solution is shown below:Therefore, the probability is given to be:[tex]P(9\le x\le14)=0.4671$

The probability is 0.4671.

8 0

1 year ago

If I ride 3 1/4 miles at 2/5 miles per minute how fast I’m going

Bogdan [553]

To get your answer, you would divide your distance by your speed. You should be going about 1.4 miles per hour.

3 0

3 years ago

Values of k for which the quadratic equation 2x - kx + k 0 has equal roots is

WARRIOR [948]

Answer:

The answer is D.

Step-by-step explanation:

We have to apply Discriminant Law. When a quadratic equation, ax² + bx + c = 0 has equal roots so the discriminant will be 0. Then, you have to substitute the values into the formula :

$D = {b}^{2} - 4ac$

$let \: D = 0 ,a = 2,b = k,c = k$

$0 = {k}^{2} - 4(2)(k)$

${k}^{2} - 8k = 0$

$k(k - 8) = 0$

$k = 0$

$k - 8 = 0$

$k = 8$

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3 years ago

Kelly shows all the ways to make 49 as tens and ones. What ways does she show?

ahrayia [7]

There are a bunch of ways to do it but a couple would be 4 tens and 9 ones, or 49 ones. I hope this was helpful.

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3 years ago

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