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alekssr [168]
3 years ago
9

Last friday trevon had $29. over the weekend he received some money for cleaning the attic. he now has $41. how much money did h

e receive?
Mathematics
2 answers:
snow_lady [41]3 years ago
6 0
We can subtract $41 from $29 

41-29=12

Trevon will receive $12
Agata [3.3K]3 years ago
5 0
$41 - $29 = your answer
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Delvig [45]

Answer:

<em>Thus, the dimensions of the metal plate are 10 dm and 8 dm.</em>

Step-by-step explanation:

For a quadratic equation:

x^2+bx+c=0

The sum of the roots is -b and the product is c. Note the leading coefficient is 1.

We know the perimeter of the rectangular metal plate is 36 dm and its area is 80 dm^2. Being L and W its dimensions, then:

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A=L.W=80

Note both formulas are closely related to the roots of the quadratic equation, we only need to adjust the data for the perimeter to be exactly the sum of L+W and not double of it.

Thus we use the semi perimeter instead as P/2=L+W=18

The quadratic equation is, then:

x^2-18x+80=0

Factoring by finding two numbers that add up to 18 and have a product of 80:

(x-10)(x-8)=0

The solutions to the equation are:

x=10, x=8

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6 0
3 years ago
Robin can bake 140 cupcakes in 5 hours.
Advocard [28]

Answer:

28.

Step-by-step explanation:

28 x 5 = 140

140 divided by 28 = 5.

5 hours.. 140 cupcakes. You divide the amount by the hours, showing you that 28 cupcakes per hour is the answer.

5 0
3 years ago
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What is the following sum? 4 sqrt 5 + 2 sqrt 5
Leya [2.2K]
The rule is a \sqrt{b}+c \sqrt{b}=(a+c) \sqrt{b}, so

4 \sqrt{5}+2 \sqrt{5}  = 6 \sqrt{5}
8 0
3 years ago
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Which values of a, b, and c correctly represent the answer in simplest form? 3 and one-half divided by 2 and one-fourth = a Star
sasho [114]

Answer:

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Step-by-step explanation:

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\dfrac{28}{18}=1\dfrac{10}{18}=1\dfrac{5}{9}\\a=1,b=5,c=9

4 0
3 years ago
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What am I doing wrong here?
Yanka [14]

Answer:

$879.19

Step-by-step explanation:

I'm not sure how you got that, but here's what I did.

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Tax + Cost before tax = Cost after tax

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3 years ago
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