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3 years ago

Factor 9x^3y-25xy^3 completely.

2 answers:

6 0

$9x^3y-25xy^3=xy(9x^2-25y^2)=xy\underbrace{\left[(3x)^2-(5y)^2\right]}_{use\ a^2-b^2=(a-b)(a+b)}\\\\=\boxed{xy(3x-5y)(3x+5y)}$

Katen [24]3 years ago

5 0

$9x^3y-25xy^3=\\\\xy(9x^2-25y^2)=\ \ \ |from\ ( a^2-b^2)=(a-b)(a+b)\\\\xy(3x-5y)(3x+5y)$

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The density of silver is 10.5 g/cm3. find the volume of a silver bar if its mass is 950 g

Mademuasel [1]

950 g * 1 cm^3/10.5g = 950/10.5 cm^3 = 90.476 cm^3

4 0

3 years ago

Read 2 more answers

If the ratio of three angles of a triangle is 2:3:4 find the size of the largest angle

Murljashka [212]

Answer: 80°

Step-by-Step Explanation:

By Angle Sum Property of a Triangle, all angles in a Triangle add up to 180°

Finding the Value of ‘x’ :-

2x + 3x + 4x = 180
5x + 4x = 180
9x = 180
x = 180/9
=> x = 20

Finding each Angle :-

2x = 2(20) = 2 * 20 = 40°
3x = 3(20) = 3 * 20 = 60°
4x = 4(20) = 4 * 20 = 80°

Hence, the Largest Angle is 80°

3 0

1 year ago

Three year ago , Jolene bought $750 worth of stock in a software company. Since then the value of her purchase has been increase

DIA [1.3K]

End of First Year (750/100)x12(3/5)=54 $750+54=804
End of Second Year (804/100)x12(3/5) = 58 $804+58=862
End Of Third Year (862/100)x12(3/5) = 62 $862+62=924

STOCK WORTH NOW = 924

5 0

3 years ago

Hillary needs a few new items for the start of softball season. She found some great sales! Help her find out the price she will

kolezko [41]

Answer:Hillary will pay $35.00 for softball glove, $20.00 for soft ball bat and $40.00 for cleats

Step-by-step explanation:

Step 1

A percentage off of a price of an item is the amount that can be saved from purchasing that item, it can also be referred as a discount given on an item purchase.

Step 2 --- Calculation

Actual Price of Softball glove= $50

Discount= 50 x 30/100 = $15.00

Price to pay= $50 - $15.00 = $35.00

Actual Price of soft ball bat= $50

Discount= 50 x 60/100 = $30.00

Price to pay= $50 - $30.00 = $20.00

Actual Price of cleats= $50

Discount= 50 x 20/100 = $10.00

Price to pay= $50 - $10.00 = $40.00

Therefore, Hillary will pay $35.00 for softball glove, $20.00 for soft ball bat and $40.00 for cleats

4 0

3 years ago

Simplify. Your answer should contain only positive<br> exponents.<br> -2^х

polet [3.4K]

Answer: I'm not entirely sure, but maybe 1/x^2?

8 0

3 years ago