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andreev551 [17]
2 years ago
7

Factrise x^2 -12x+32

Mathematics
1 answer:
Klio2033 [76]2 years ago
6 0

Answer:

(x - 8) (x - 4)

Step-by-step explanation:

Hope this helps! :D

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It takes Sue, Jeff and Todd 4 hours to paint a room together. If it takes Sue 10 hours by herself and Jeff 12 hours by himself,
diamong [38]

The number of time it would take Todd to paint the room alone is 15 hours.

  • Let the Todd's time be t.

<u>Given the following data:</u>

  • Combine time = 4 hours
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To calculate the number of time it would take Todd to paint the room alone:

How to solve a word problem:

In order to solve this exercise, we would first of all calculate their individual rate and combined rate respectively. Finally, we would add their individual rates together and equate it to the combined rate.

<u>For </u><u>Sue</u><u>:</u>

Rate = \frac{1}{10} \;work/hr

<u>For </u><u>Jeff</u><u>:</u>

Rate = \frac{1}{12} \;work/hr

<u>For </u><u>Todd</u><u>:</u>

Rate = \frac{1}{t} \;work/hr

<u>Combined rate:</u>

Rate = \frac{1}{4} \;work/hr

Adding the individual rates, we have:

\frac{1}{10} +\frac{1}{12} +\frac{1}{t} =\frac{1}{4} \\&#10;\\&#10;

Multiplying all through by 120t, we have:

12t+10t+120=30t\\&#10;\\&#10;22t+120=30t\\&#10;\\&#10;120=30t-22t\\&#10;\\&#10;120=8t\\&#10;\\&#10;t=\frac{120}{8}

t = 15 hours.

Read more on word problems here: brainly.com/question/13170908

5 0
2 years ago
The set of numbers that includes the whole numbers and their opposites is called the set of...?
Nookie1986 [14]

Step-by-step explanation:

option C is the answer

hope it helps

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Which point on the graph is the solution to the system of linear equations? -2x=-y+4 x=-2
Elodia [21]

Answer:

The solution is (-2, 0)

Step-by-step explanation:

Re-write -2x=-y+4 x=-2 in column form:

x=-2

-2x=-y+4

Next, substitute -2 for x in the second equation:

-2(-2) = -y + 4, or:

4 = -y + 4.  Thus, y must be 0.

The solution is (-2, 0)

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3 years ago
Giving brainliest to correct answer
Temka [501]

1.25

hope it helped and sorry if it's wrong i wish you luck

7 0
2 years ago
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What is the area of the triangle below (in square units)?<br> 10 mm<br> 90mm
bixtya [17]

Answer:

450

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