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3 years ago

10

Use the formula you learned to answer the question. If a dogsled team travels 4 kilometers in 8 minutes, what is the speed of th

e dogsled?
A. 8 k/m
B. 1.5 k/m
C. 0.5 k/m
D. 4 k/m

1 answer:

bonufazy [111]3 years ago

6 0

Answer

C-0.5km

Step-by-step explanation:

you can simplify both the kilometers and minutes to 1 kilometer in 2 minutes or 0.5 kilometer in 1 minute. Hope this helps!

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Rewrite the expression with the given base.<br><br> 125^2x with a base of 5

jasenka [17]

Okay so you have to start by working out how many times you multiply 5 by itself to get 125.

5x5x5=125

therefore: (5^3)^2x) is the answer:)

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3 years ago

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Worth 20 points!!<br> Tell me an x, y ordered pair that is a solution for this equation. Y = 5x - 2

NISA [10]

These are three solutions
(0,-2)
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(2,8)

8 0

3 years ago

LiRa [457]

There is 3600 seconds per hour.
Multiply the speed per second by 3600 to get the speed in miles per hour then convert to kilometer/hour.

4.9 * 3600 = 17,640 miles per hour

17,640 x 1.6 = 28,224 kilometers per hour

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3 years ago

9. Gabriel is solving 23 x 12. He already multiplied the ones, 2 x 3 = 6. What two digits should he multiply next? How do you kn

Hitman42 [59]

Answer:

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Step-by-step explanation:

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2 years ago

A chemical company makes two brands of antifreeze. The first brand is 20% pure antifreeze, and the second brand is 70% pure anti

andre [41]

Answer:

First brand of antifreeze: 21 gallons

Second brand of antifreeze: 9 gallons

Step-by-step explanation:

Let's call A the amount of first brand of antifreeze. 20% pure antifreeze

Let's call B the amount of second brand of antifreeze. 70% pure antifreeze

The resulting mixture should have 35% pure antifreeze, and 30 gallons.

Then we know that the total amount of mixture will be:

$A + B = 30$

Then the total amount of pure antifreeze in the mixture will be:

$0.2A + 0.7B = 0.35 * 30$

$0.2A + 0.7B = 10.5$

Then we have two equations and two unknowns so we solve the system of equations. Multiply the first equation by -0.7 and add it to the second equation:

$-0.7A -0.7B = -0.7*30$

$-0.7A -0.7B = -21$

$-0.7A -0.7B = -21$

+

$0.2A + 0.7B = 10.5$

--------------------------------------

$-0.5A = -10.5$

$A = \frac{-10.5}{-0.5}$

$A = 21\ gallons$

We substitute the value of A into one of the two equations and solve for B.

$21 + B = 30$

$B = 9\ gallons$

3 0

2 years ago