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2 years ago

Elaine can travel 63 meters in 3 second what is Elaine rate of speed?

Mathematics

2 answers:

vovangra [49]2 years ago

6 0

Answer:

75,600 m/h (21 m/s, 0.02 km/h)

Step-by-step explanation:

skad [1K]2 years ago

6 0

Hey there!

The answer to your question is $21 mps$

To find the rate of speed, we have to find the meters per second, or mps. The formula for this is $\frac{distance}{time} = speed$ . So:

$\frac{63}{3} = s$

$21 = s$

This means that the speed is 21 meters per second, or 21 mps.

Hope it helps and have an amazing day!

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Assuming that the amount of water leaking from the faucet every hour increases uniformly by 1/12 of the amount that leaked in th

Artemon [7]

Answer:

I'm going to assume that this means that the volume doubled. If so, then it would become 2*76 = 152 mL

Step-by-step explanation:

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2 years ago

in a class of 34 students 19 of them are girls what percentage of the class are girls to 1 decimal place

motikmotik

Answer:

55.9% of the class are girls

Step-by-step explanation:

19/34 = 0.559

0.559 x 100 = 55.9%

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2 years ago

Read 2 more answers

Solve the equation.<br> 6x + 7 = 8x-15<br> help :(

Anvisha [2.4K]

Start by getting all terms with x on one side and all terms without on the other.

6x+7=8x-15

subtract 6x from both sides

7=2x-15

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11=x

7 0

3 years ago

Read 2 more answers

Assume a normal distribution and that the average phone call in a certain town lasted 4 min, with a standard deviation of 1 min.

olya-2409 [2.1K]

SOLUTION

The mean is 4min

standard deviation is 1min

the z score is

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

where

$\begin{gathered} x=3 \\ \bar{x}=4 \\ \sigma=1 \end{gathered}$

then we have

$\begin{gathered} z=\frac{3-4}{1}=\frac{-1}{1}=-1 \\ z=-1 \end{gathered}$

The probability the call lasted less than 3 min will be

Therefore, the probability that (z < -1 ) is

[tex]\begin{gathered} Pr(z<-1)=Pr(0Hence, the percentage of the calls that lasted less than 3 min is 16%

4 0

1 year ago

A ship goes at the rate of (3m-2) knots per hour. How far can it travel in (4m+9) hours?

Ber [7]

Answer: $12m^2+19m-18$

Step-by-step explanation:

Given

Speed of boat $v=3m-2\ \text{knots per hour}$

$\text{time t= }4m+9\ \text{hours}$

$\Rightarrow \text{Distance =speed}\times \text{time}$

$\Rightarrow \text{Distance d=}(3m-2)\cdot (4m+9)\\\Rightarrow d=12m^2+19m-18$

7 0

2 years ago