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Phoenix [80]
3 years ago
8

Armando read 20 pages of his 200-page book in 4 hours. At this rate, how long will it take him to read the entire book?

Mathematics
1 answer:
Jet001 [13]3 years ago
6 0
What you would need to do is find out how many pages can he read in 1 hour. If he can read 20 pages in 4 hours, then that means he can read 5 pages in 1 hour. So, what you need to do is divide 5 by 200, and you'll get 40. Armando will finish the whole book in 40 hours.
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How do you simplify -2x(x+3)-(x+1)(x-2)
Elena L [17]
1. Distribute the -2x with the (x+3)
2.Multiply (x+1) and (x-2) which is (x2- x -2)
So far it should look like (-2x^2 -6x) - (x^2-x-2)
3. Distribute out the negative
Should look like this -2x^2 -6x - x^2+x+2
4. Lastly combine like terms

Your result should be:
-3x^2 - 5x + 2

Hope this helps!
8 0
3 years ago
Read 2 more answers
Challenge Yossi used to have a square garage with 246 ft of floor space. recently built an addition to it. The garage is still a
irina [24]

Considering the perimeter of a square, it is found that:

  • The length of one side of the garage​ originally was of 61.5 ft.
  • The length of one side of the garage​ now is of 92.25 ft.
  • The percent increase in the length of one​ side was of 50%.

<h3>What is the perimeter of a square?</h3>

The perimeter of a square of side length s is given by four times the length, that is:

P = 4s.

Before the change, the perimeter was of 246 ft, hence:

4s = 246

s = 246/4

s = 61.5.

The length of one side of the garage​ originally was of 61.5 ft.

After that, the perimeter increased by 50%, hence:

P = 246 x 1.5 = 369.

4s = 369

s = 369/4

s = 92.25.

The length of one side of the garage​ now is of 92.25 ft.

The percent increase is the increase divided by the initial value, hence:

(92.25 - 61.5)/61.5 = 50%.

The percent increase in the length of one​ side was of 50%.

More can be learned about the perimeter of a square at brainly.com/question/10489198
#SPJ1

4 0
1 year ago
Which expression is equivalent to 73•7-5
Morgarella [4.7K]

order of operations

BEMDAS:

B - <em>Brackets</em>

E - <em>Exponents</em>

D - <em>Division</em>

M - <em>Multiplication</em>

A - <em>Addition</em>

S - <em>Subtraction</em>

73 • 7 - 5 = 511 - 5 = 506

3 0
3 years ago
Read 2 more answers
Help :)))) please it would mean alot
Nadya [2.5K]
The answer is 1.144. You can find the answer key in Khan acadmy or even on quizlet
8 0
3 years ago
The table shows two options provided by a high-speed Internet provider.
Gnoma [55]

Answer:

8 months and $320

Step-by-step explanation:

To find when 30m + 80 = 40m, isolate m.

30m + 80 = 40m

Subtract 40m from both sides.

-10m + 80 = 0

Subtract 80 from both sides.

-10m = -80

Divide both sides by -10

m = 8

To find the cost, substitute 8 as m in one of the equations.

40(8) = 320

6 0
3 years ago
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