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2 years ago

9

You travel between these two mile markers and then find your average speed in miles per hour. Select the three equations that re

present this situation.

2 answers:

miss Akunina [59]2 years ago

7 0

Answer:

150 miles = 2.5 hours x speed

2.5 hours =150 miles/speed

speed = 150 miles/2.5 hours

Step-by-step explanation:

good luck

dmitriy555 [2]2 years ago

6 0

Do you have answer choices?

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Jabari is thinking of three numbers. The greatest number is twice as large as the least number. The middle number is three more

Likurg_2 [28]

Answer:

18, 21, 36

Step-by-step explanation:

Let L represent the least number. Then the greatest is 2L and the middle number is (L+3). Their sum is ...

L +(2L) +(L+3) = 75

4L = 72 . . . . . . . . . subtract 2, collect terms

L = 18 . . . . . . . . . . . divide by 4

L+3 = 21

2L = 36

The numbers are 18, 21, and 36.

5 0

2 years ago

Karson drove from his house to work at an average speed of 35 miles per hour. The drive took him 20 minutes. If the drive took

Nastasia [14]

Answer:

Karson's average speed on his way home was 28 miles per hour.

Step-by-step explanation:

Since Karson drove from his house to work at an average speed of 35 miles per hour, and the drive took him 20 minutes, if the drive took him 25 minutes and he used the same route in reverse, to determine what was his average speed going home, the following calculation must be performed:

60 = 35

20 = X

20 x 35/60 = X

700/60 = X

11.666 = X

25 = 11,666

60 = X

60 x 11.666 / 25 = X

27.99 = X

Therefore, Karson's average speed on his way home was 28 miles per hour.

3 0

2 years ago

A waterbed filled with water has the dimensions 8ft by 7 ft by .75 ft taking the density of water to be 1.00/gm cubed how many k

monitta

By definition, the density is given by:

$D = \frac{m}{V}$

Where,

m: mass

V: volume

Clearing the mass we have:

$m = DV$

The volume is given by:

$V = (8) * (7) * (0.75)$

$V = 42ft ^ 3$

Then, we have the following conversion:

$1foot = 0.3048m$

Applying the conversion we have:

$V = 42 * (0.3048) ^ 3$

$V = 1.19m ^ 3$

On the other hand we have the following conversions:

$1m = 100cm$

$1Kg = 1000g$

Applying the conversions for the density we have:

$D = (1\frac{g}{cm^3})((\frac{100}{1})^3\frac{cm^3}{1m^3})(\frac{1}{1000}\frac{Kg}{g})=1000\frac{Kg}{m^3}$

Then, the mass of the water is:

$m = (1000) * (1.19)$

$m = 1190$

Answer:

1190 kilgrams of water are required to fill the waterbed

7 0

2 years ago

Which of these ordered pairs is a solution to the inequality y – 2x ≤ –3?

Archy [21]

The answer is D.(1,-1) the reason is -1(y)-2*1(x)=-3 so, -1-2*1 is less than or equal to -3.

8 0

2 years ago

Tranh dives off a 9 m platform. He reaches a maximum height of 9.2 m after 0.26 s. How long does it take him to reach the water

777dan777 [17]

He will reach the ground after 2.023 seconds.

To start, write a quadratic equation in vertex form with the given information about the vertex.

$y=a(x-2.6)^2+9.2$

All that we need to solve for is a. Plug in the point (0, 9) and you will be able to solve for a and write the complete equation.

Now, just use the quadratic formula and you will get 2.023 seconds for when he hits the ground.

3 0

2 years ago