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lana66690 [7]
3 years ago
9

Select the correct answer.

Mathematics
1 answer:
scoundrel [369]3 years ago
8 0

Answer:

Option C

Step-by-step explanation:

Difference of the two expressions has been written as,

\frac{3x}{x^2-7x+10}-\frac{2x}{3(x-5)}

To rewrite this expression as one expression,

First he factored the the denominators,

\frac{3x}{(x-2)(x-5)}-\frac{2x}{3(x-5)}

Then Juan will make the denominators of both the terms equal,

For which he will multiply the second expression by \frac{x-2}{x-2}.

\frac{3x}{(x-2)(x-5)}-\frac{2x(x-2)}{3(x-5)(x-2)}

Option C will be the correct option.

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Chloe and Libby want to tie Ryan to a bunch of approximately spherical helium balloons of diameter 0.3m. The volume of each ball
dem82 [27]

Answer:  Aproximately 2,525 balloons

Step-by-step explanation:

 1. Find the volume of a balloon with the formula given in the problem, where r is the radius (r=\frac{0.3m}{2}=0.15m), then:

V=4(0.15m)^{3}=0.0135m^{3}

2. Convert the volume from m³ to lliters by multiplying it by 1,000:

V=0.0135m^{3}*1000=13.5L

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1 g=0.0022 lb

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(5stone)(\frac{14pounds}{1stone})=70pounds=70lbs

4. Then Ryan's weigh is:

5lb+70lb=75lb

5. Then, if 1 liter of helium can lift 0.0022 lb, to lift 75 lb (which is the weight of Ryan) they need:

\frac{75lb*1L}{0.0022lb}=34,090.90L

6. Then, to calculate the aproximated number of balloons they need to make him float (which can call n), you must  divide the liters of helium needed to lift the weight of Ryan by the volume of a balloon, then the result is:

n=\frac{34,090.90L}{13.5L}

n=2,525.25≈2,525 balloons.

5 0
3 years ago
-8(2b-7)-9(b-5)<br>simplify ​
GenaCL600 [577]

Answer:

<h2>-25b + 101</h2>

Step-by-step explanation:

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3 years ago
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Dr. Newton is saving up to buy a car. She has already saved $3,000. If she wants to spend
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Dr. Newton needs 5000 dollars, and 3000 dollars have already been saved. So, 2000 dollars remain.

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\dfrac{2000}{8}=250

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3 years ago
What is the area of this trapezoid? Please find the answer and equation.
Troyanec [42]

Answer:

A=a+b

2h=20+8

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Step-by-step explanation:

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3 years ago
Please help! I was also wondering if someone can list specific topics i should focus on for my algebra exam
xenn [34]

Answer:

Solving basic equations & inequalities (one variable, linear)

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Step-by-step explanation:

6 0
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