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Maksim231197 [3]
3 years ago
8

Answer the question in the photo

Mathematics
1 answer:
Lera25 [3.4K]3 years ago
6 0

Answer: 3

Step-by-step explanation:

Take the y coordinates and divide two of them. Example: 6 ÷ 2 = 3

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At his regular hourly rate, Don had estimated the labor cost of a repair job as $336 and he was paid that amount. However, the j
Naddika [18.5K]

Answer:

The time Don estimated for the job, in hour, is 24 hours

Step-by-step explanation:

Based on his regular hourly rate, Don had estimated :

Estimated cost (C) = $336

Estimated hour of work =x

So, estimated rate in hour (R) = \frac{336}{x}

In fact, it took him 4 hours longer than he estimated, therefore

Factual hour of work = {x+4}

Factual rate in hour (F) = \frac{336}{x+4}

He earned $2 less than his regular hourly rate, hence the factual rate (F) is the subtraction of estimated rate (R) by 2

F = R - 2

Then, substitute F and R,

\frac{336}{x+4} = \frac{336}{x} - 2

\frac{336}{x+4}+2  = \frac{336}{x}

x(\frac{336}{x+4}+ \frac{2(x+4)}{x+4}) = 336

x(336+2(x+4))  = 336 (x+4)

336x+2x^{2} +8x = 336x+336*4

since at the both sides have 336x, we can removed it.

2x^{2} + 8x = 336 * 4

devide both sides by 2, thus

x^{2} +4x = 336 * 2

x^{2} +4x = 672

Make the algebra function equal to 0 by moving the 672 to the left side.

x^{2} +4x - 672 = 0

factorize the function above,

the factor of 672 is 24 and 28, because if it's multiplied it becomes 672 and if it's subtracted equal to 4. since 4x is positive, the higher number (28) should be in positive. Therefore we conclude that

(x+28)(x-24) = 0

x+28=0, x = -28\\x-24=0, x = 24

We takes the positive result, because the time is in positive. so, the estimated time is 24 hours

3 0
3 years ago
A mayoral candidate would like to know her residents’ views on a public open space before the mayoral debates. She asks only the
Paraphin [41]

Answer:

convenience sample

Step-by-step explanation:


7 0
3 years ago
Read 2 more answers
Plzzz help I will give you 25 points
LuckyWell [14K]
Pretty sure the answer is 77
5 0
3 years ago
Read 2 more answers
2c +3 = 3c - 4<br> Help me please
VashaNatasha [74]

Hey there!

<u>Solve </u><u>the </u><u>equation</u><u>:</u>

  • Answer :

c = 7 ✅

  • Explanation

2c + 3 = 3c - 4

<em>></em><em>></em><em> </em><em>Subtract </em><em>3</em><em> </em><em>from </em><em>both </em><em>sides </em><em>:</em>

<em> </em>

2c + 3 - 3 = 3c - 4 - 3

2c = 3c - 7

<em>></em><em>></em><em> </em><em>Substrat </em><em>3</em><em>c</em><em> </em><em>from </em><em>both </em><em>sides </em><em>:</em>

2c - 3c = 3c - 7 - 3c

-c = -7

<em>></em><em>></em><em> </em><em>Divide</em><em> </em><em>each </em><em>side </em><em>by </em><em>-</em><em>1</em><em> </em><em>:</em>

-c / -1 = -7 / -1

c = 7

  • Let's verify:

2c + 3 ⇔ 2(7) + 3 ⇔ 14 + 3 ⇔ 17

3c - 4 ⇔ 3(7) - 4 ⇔ 21 - 4 ⇔ 17

Therefore, your answer is c = 7 .

Mor about equation :

brainly.com/question/27353929

Have a good day :)

6 0
2 years ago
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Let a triangle have sides of 137 in, 127 in,
Margarita [4]

Answer:

I think first add the side 137+ 127 +118=382 / 382cm

8 0
3 years ago
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