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3 years ago

Factor completely, then place the answer in the proper location on the grid. 9x 4 -225y 8

Mathematics

2 answers:

sasho [114]3 years ago

8 0

Answer:

the answer to the question

agasfer [191]3 years ago

5 0

Answer: 9 (x^2 -5y^4) (x^2+5^4)

Step-by-step explanation:

Hi, to solve this we have to analyze the equation.

9x^4 -225 y ^8

First, we have to remove the common factor (9)

So, mathematically speaking:

9 (x^4 -25y^8)

The next step is to factor the difference of two perfect squares

9 (x^2 -5y^4) (x^2+5^4)

Feel free to ask for more if it´s necessary or if you did not understand something.

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(a) Work out the reciprocal of 1.25

Oxana [17]

Answer:

0.8 OR $\frac{4}{5}$

Step-by-step explanation:

The reciprocal of any number is the number that it multiplies by to equal 1.

The reciprocal can be found by simply converting the number into a fraction and then 'flipping' the fraction as any number multiplied by its reciprocal is 1.

E.g.

No. X/Y * Y/X (its reciprocal) = 1

$\frac{x}{y} *\frac{y}{x} =\frac{xy}{xy} =1$

So, to find the reciprocal of 1.25,we should first convert 1.25 to a fraction.

1.25 = 125/100

$\frac{125/25}{100/25}=\frac{5}{4}$

Now we just flip 5/4 to get our reciprocal:

$\frac{4}{5}$ = 0.8

Test: 0.8 * 1.25 = 1

The reciprocal of 1.25 ( $\frac{5}{4}$ ) is 0.8 ( $\frac{4}{5}$ ).

Hope this helped!

8 0

2 years ago

"Ten subtracted from the quotient of a number and<br>7 is less than -6.

RideAnS [48]

Written out, this would be (x / 7) - 10 < -6

solved, it would be x < 28

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2 years ago

A university has 28,980 students. In a random sample of 180 students, 12 speak three or more languages. Predict the number of st

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3 years ago

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3 years ago

-2(4х + 4) — 3х – 2 = 34<br> Find x

djverab [1.8K]

Answer:

x = -4

Step-by-step explanation:

Distribute the -2 into the parentheses and your equation becomes -8x - 8 - 3x - 2 = 34

Then combine the -8x and -3x as well as the -8 and -2 to have -11x - 10 = 34

Add 10 to both sides and get -11x = 44

Divide both sides by -11 for x=-4

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3 years ago