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Stells [14]
3 years ago
14

Cheyenne drove 3,000 miles in 75 hours. At this rate, how long will it take her to drive 4,000 miles?

Mathematics
1 answer:
KIM [24]3 years ago
4 0
Hello!

To start, since you already know that you can drive 3000 miles in 75 hours, but you need to know how long it will take to drive 4000 miles, you can solve using a proportion, where x is the amount of hours:

3000/75=4000/x

When you have set this up, cross multiply:
3000*x=75*4000

After you have cross multiplied, you will result in this:
3000x=300000

Then, solve for x and you will get x=100, meaning it will take Cheyenne 100 hours to drive 4000 miles.
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Answer:

x=y-6

Step-by-step explanation:

First, flip the equation.

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2 years ago
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What is 2x +3y+6x+9y
shusha [124]

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7 0
3 years ago
Raina's penny bank is  1/4  full. After she adds  360  pennies, it is  5/8  full. How many pennies can Raina's bank hold? ​
Triss [41]

Answer:

960

Step-by-step explanation:

We start with the variable "x". Let's call "x" Raina's penny bank.

After adding 360 pennies, at the end, she has 5/8x, or 5/8.

So we start with

(1/4)x + 360 = 5/8x

Let's subtract 1/4x from both sides

360 = 5/8x - 1/4x

Remember, we need to use common denominators to subtract, so 1/4 becomes 2/8

360 = 5/8x - 2/8x

Now we simplify to get

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Multiply the reciprocal of 3/8 to both sides which is 8/3

360 * 8/3 = x

Answer is 960 pennies.

Therefore Raina's bank hold 960 pennies.

4 0
2 years ago
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