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3 years ago

6 erasers cost $6.60. Which equation would help determine the cost of 3 erasers?

2 answers:

6 0

First 6.60 divided by 6 to find the unit rate. It is 1.10 dollars per eraser. You then do 1.10 times 3 which will get you 3.30 dollars for 3 erasers.

larisa86 [58]3 years ago

6 0

Answer with Step-by-step explanation:

We are given that:

6 erasers cost $6.60.

We have to find:

The cost of 3 erasers

Cost of 6 erasers =$ 6.60

Cost of 6/2 erasers= $6.60/2

i.e. cost of 3 erasers= $3.30

Equation which determine the cost of 3 erasers is:

Cost of 6/2(=3) erasers= $6.60/2=$3.30

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Answer:

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Step-by-step explanation:

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3 years ago

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miv72 [106K]

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What is the x-intercept for y=7/4x+1/4

Brums [2.3K]

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Answer:

-1/7

Step-by-step explanation:

To find the x-intercept, set y=0 and solve for x.

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3 years ago

If a paper plane is thrown from the top of a 147-foot cliff into the water below, the height of the plane at any given time can

sasho [114]

Answer:

c. 6.5 seconds.

Step-by-step explanation:

We have been given that a a paper plane is thrown from the top of a 147-foot cliff into the water below, the height of the plane at any given time can be determined by the formula $h = -3t^2+147$ , where h is the height of the plane at t seconds.

To find the time, when plane will be at a height of exactly 20.25 feet, we will substitute $h=20.25$ in our given formula and solve for t as:

$20.25= -3t^2+147$

$-3t^2+147=20.25$

$-3t^2+147-147=20.25-147$

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3 years ago

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zimovet [89]

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3 years ago

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