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4 years ago

4. If Mr. Key can walk 3 miles, at a constant rate, for 57 minutes, how long

2 answers:

8 0

95 minutes

He is walking at a constant rate of 19minutes per mile.
If you then multiple 19 minutes time 5 miles you get 95minutes to walk 5miles

vampirchik [111]4 years ago

6 0

It will take him 95 minutes because the constant rate is 19 and 19*5 is 95

You might be interested in

Find the value of y when x equals -1.<br><br> 8x - 2y =10

Artyom0805 [142]

Answer:

y = - 9

Step-by-step explanation:

Substitute in -1 for x

8(-1) - 2y = 10

-8 - 2y = 10

Subtract -8 from both sides

-8 - (-8) cancels out to 0

10 - (-8) = 18

We are left with:

-2y = 18

Divide by -2 on both sides.

-2y/-2 = y

18/-2 = -9

y = -9

6 0

3 years ago

Caroline, Colin & Sarah share some money.

Alex787 [66]

Caroline, Colin & Sarah share some money.Caroline will get $\dfrac{2}{3}$ when Caroline, Colin & Sarah share some money.

<h3>What is the ratio?</h3>

The ratio defined as the sharing of the two or three things or it represent that one thing or number is how many times to the other.

One part is excluded in the problem. That part is:

"Caroline gets $\dfrac{1}{9}$ of the money."

If Caroline gets 1/9th, then remaining is:

$1-\dfrac{1}{9}=\dfrac{8}{9}$

Colin and Sarah share in ratio 3 is to 1, that means 3 + 1 = 4 parts...

8/9th in 4 parts means, each part is:

$\dfrac{\dfrac{8}{9}}{4}=\dfrac{2}{9}$

We know Colin gets "3" parts of the total, each part is (2/9)th, so 3 parts would be:

$3\times \dfrac{2}{9}=\dfrac{6}{9}=\dfrac{2}{3}$

Colin gets $\dfrac{2}{3}$ money when three of them share money.

To know more about Ratio follow

brainly.com/question/2328454

#SPJ1

8 0

3 years ago

It was 96 kilometers from perry to medford. David raced to medford and idled back. If the round trip took 8 hours, what was his

valkas [14]

Average speed = (total distance) / (total time)

Average speed = (192 km) / (8 hours) = 24 km per hour .

3 0

3 years ago

Read 2 more answers

Katie collects stamps. She has stamps from Canada, the U.S.A, and the rest of the world in a ratio of 1: 1.2: 1.5. She has 135 s

adoni [48]

Answer:

Step-by-step explanation:

: I got A)90

B)108

C)333

Hope that's right. I checked it 4 times.

5 0

3 years ago

Read 2 more answers

Suppose the force acting on a column that helps to support a building is a normally distributed random variable X with mean valu

Sauron [17]

Answer:

(1) 0.4207

(2) 0.7799

Step-by-step explanation:

Given,

Mean value,

$\mu = 15.0$

Standard deviation,

$\sigma = 1.25$

(1) P(X ≥ 17.5) = 1 - P( X ≤ 17.5)

$= 1- P(\frac{x-\mu}{\sigma} \leq \frac{17.5-\mu}{\sigma})$

$=1-P(z\leq \frac{17.5 - 15}{1.25})$

$=1-P(z\leq \frac{2.5}{1.25})$

$=1-P(z\leq 2)$

$=1- 0.5793$ ( By using z-score table )

= 0.4207

(2) P(14 ≤ X ≤ 18) = P(X ≤ 18) - P(X ≤ 14)

$=P(z\leq \frac{18 - 15}{1.25}) - P(z\leq \frac{14 - 15}{1.25})$

$=P(z\leq \frac{3}{1.25}) - P(z\leq -\frac{1}{1.25})$

$=P(z\leq 2.4) - P(z\leq -0.8)$

= 0.9918 - 0.2119

= 0.7799

8 0

3 years ago