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andrezito [222]
3 years ago
15

78 students are going to be divided into 24 groups and the number of each group member will be either 4 or 2. How many groups of

2 will there be ? Let x be the number of groups of 2 and let y be the number of groups of 4
Mathematics
1 answer:
True [87]3 years ago
7 0
36 and 45 that will be your answer
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Eighty, decreased by three times a
Marina86 [1]

Answer:

The number is 9.

Step-by-step explanation:

Lets write this as an equation first. We'll substitute the number for the variable <em>x</em>.

80 - 3x = 5x + 8

First, let's add 3x to both sides.

80 - 3x + 3x = 5x + 3x + 8

80 = 8x + 8

Next, let's subtract 8 from both sides.

80 - 8 = 8x + 8 - 8

72 = 8x

Finally, let's divide both sides by 8.

72/8 = 8x/8

9 = x

<em>"x" is 9.</em>

<em>So the secret number is 9.</em>

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Step-by-step explanation:

Simplify it

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A pair of shoes is on sale for $66.00. This is 75% of the original price. What was the original price?
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