You solve an equation by finding the value that is?

Mathematics

1 answer:

Alex787 [66]3 years ago

6 0

Yes I think that is what you do but others can elaborate more im sure

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A 7 foot piece of PVC pipe is cut into three pieces. The longest piece is 13 inches longer than three times the smallest piece.

ohaa [14]

Let x represent length of smallest piece.

We have been given that the longest piece is 13 inches longer than three times the smallest piece. So length of longest piece would be $3x+13$ .

The middle piece is 5 inches less than the longest piece. So length of middle piece would be $3x+13-5=3x+8$ .

We have been given that the length of pipe is 7 foot.

1 feet = 12 inches.

7 feet = 7*12 inches = 84 inches.

Now we will equate the sum of lengths of 3 pipes with 84 as:

$x+3x+13+3x+8=84$

Let us solve for x.

$7x+21=84$

$7x+21-21=84-21$

$7x=63$

$\frac{7x}{7}=\frac{63}{7}$

$x=9$

Length of middle piece would be $3x+8\Rightarrow 3(9)+8=27+8=35$ .

Therefore, the middle piece is 35 inches long.

8 0

3 years ago

What is the difference between a Linear Graph and an Exponential Graph?

Softa [21]

Answer:

Linear functions change at a constant rate per unit interval. An exponential function changes by a common ratio over equal intervals.

7 0

3 years ago

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How do you go about doing this question?

Leviafan [203]

Answer:

I believe the answer here would be H. 50.

Step-by-step explanation:

To complete this, I put the words typed and the time (s) and put them into a fraction. In doing this, the first set of data becomes $\frac{5}{6}$ . When I did the same thing to the other sets, I discovered that they all simplify down to $\frac{5}{6}$ . This means that in 60 seconds, the fraction for words typed will be $\frac{50}{60}$ , meaning that 50 words will be typed in 60 seconds.