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Sergeeva-Olga [200]

3 years ago

12

1-Solve: m - 9 = -13

1 answer:

timofeeve [1]3 years ago

4 0

1: m=-4
2: b=-4
3: -9=k
4: C=-11.4
5:X<10

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natta225 [31]

9/3 = 3
8x3 = 24

1/2 x 3 x 24 = 108

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2 years ago

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Solve: |2x + 3| -1 < 4

dybincka [34]

|2x+3|-1<4
|2x+3|<5

1) when 2x +3 is positive
2x+3<5
2x<2
x<1 (-∞, 1)

2) when 2x+3 is negative
-(2x+3)<5
-2x-3<5
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(-∞, 1)∩(-4, ∞)=(-4,1)

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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

Sue's time = 10 hours

Jeff's time = 12 hours

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} \\
\\
$

Multiplying all through by 120t, we have:

$12t+10t+120=30t\\
\\
22t+120=30t\\
\\
120=30t-22t\\
\\
120=8t\\
\\
t=\frac{120}{8}$

t = 15 hours.

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

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2 years ago

The school's goal for the charity fundraiser was $3,000. They exceeded the goal by 22%. How much money for charity did the schoo

Triss [41]

The answer is $660 because when multiply 3000•.22=$660.

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3 years ago

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What measures of a cylinder can be determined when given the volume and the height? Describe how to find the measure.

Maru [420]

Answer:youywould be able to find the base.

Step-by-step explanation:

Formula for Volume of a cylinder is : V=Bh

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3 years ago

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