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Oliga [24]
3 years ago
12

Which expression represents the expanded version of the expression below? 4x(3x+7)

Mathematics
2 answers:
puteri [66]3 years ago
7 0

Answer:

X is just a variable.

Step-by-step explanation:

emmasim [6.3K]3 years ago
3 0
Umm i would say 12x^2 + 28x
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Margo read forty-two pages in 2.5 hours. Pete read six fewer pages in the same amount of time. How long would it take Pete to re
aleksklad [387]

Answer:

<u>5.56 hours</u>

Step-by-step explanation:

Margo read 42 pages in 2.5 hours.

Pete read six fewer pages in the same amount of time.

So, The number of pages that Pete reads = 42 - 6 = 36 pages

So, Pete read 36 pages in 2.5 hours.

let the time needed to read 80 pages x

∴ 36 pages ⇒ 2.5 hours

   80 pages ⇒  x   hours

∴\frac{36}{80} = \frac{2.5}{x}

Using cross multiplication:

∴x = \frac{80*2.5}{36} = \frac{200}{36}=5\frac{5}{9}=5.56

So, The time taken to read 80 pages

= <u>5.56 hours = 5 hours and 33.33 minutes</u>

7 0
3 years ago
I tried this problem two ways and got 40% and 25%. Which (if any) is correct. If neither are correct, please give me the correct
ZanzabumX [31]

\frac{240 }{600}  \times 100\% = 40\%
8 0
4 years ago
What is the slope and Y intercept?
kirill [66]

Answer:

Y intercept = (0,10)

slope is 4

Step-by-step explanation:

Ok so Start with y intercept. That’s the point it crosses the y axis. So that would be ( 0, 10). To find slope, you do rise/run. Or how far up, and how far right. take two points (0,10) and (1, 14)

14-10

——-

1-0

= 4/1 = 4

so the slope is 4.

7 0
3 years ago
Rearrange the formula for the kinetic energy, K = \frac{1}{2} m v^2, to isolate v, the velocity.
Misha Larkins [42]
Answer: V = The square root of (2K/M)

We are starting with the formula: K = 0.5MV^2

Our first steps to isolate V would be to multiply by 2 and divide by M on both sides of the equation.

2K/M = V^2

Now, we just have to take the square root of both sides of the equation.
8 0
3 years ago
6х + 2 + 6x &lt; 14 <br> Solve inequality
Softa [21]

Answer:

<1

Step-by-step explanation:

Divide each term in

12

x

<

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by

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.

12

x

12

<

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Cancel the common factor of

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4 0
3 years ago
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