3 years ago

I need Help ASAP please

Mathematics

1 answer:

Rashid [163]3 years ago

6 0

Answer:

Step-by-step explanation:

14 is a 30% decrease of 20.

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Complete the equation, and tell which property you used.<br><br> 8 x (14+7) = _________+ (8 x 7)

melamori03 [73]

By distributive property, 8 x (14 + 7) = (8 x 14) + (8 x 7)

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3 years ago

What is standard form for 6.43999001 x 10^8

Romashka [77]

6.43999001
1st you move the decimal 8 times to your right
once you are done moving the decimal you should end up with a whole number
you answer is (643, 999, 001)

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2 years ago

The cost for a pack of 18 pencils is $3.24. Find the unit price in dollars per pencil. If necessary, round your answer to the ne

nexus9112 [7]

Answer:

$0.18 per pencil.

Step-by-step explanation:

"Dollars per unit" means that you take the dollar amount and divide it by the amount of pencils, so you get 3.24/18, or .18.

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2 years ago

GIVING BRAINIEST IF CORRECT!!<br><br> Factor x^4 - 16 completely

ioda

Answer:

$(x^2 + 4)(x + 2)(x - 2)$

Step-by-step explanation:

Hello!

We can use the difference of square method.

<h2>Difference Of Squares (DOS)</h2>

The formula for the DOS is $(a + b)(a - b) = a^2 - b^2$

It is a simple way to factor polynomials.

The criteria:

Has to begin and end with a perfect square
The operation has to be subtraction

<h3>Factor:</h3>

$x^4 - 16$

Begins with a perfect square (x² * x²) and ends with a perfect square (4 * 4)

$(x^2 + 4)(x^2 - 4)$

Warning! Watch out, there may be another DOS!

$x^2 - 4$ is another DOS

$(x^2 + 4)(x + 2)(x - 2)$

The x² + 4 is not a DOS because the operation is addition.

The final factored form is $(x^2 + 4)(x + 2)(x - 2)$

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1 year ago

In Miami the number of highway accidents increased by 20% over a four year period. How many accidents were there in 2013 if ther

wariber [46]

X/5120=20/100
x/5120=1/5
5120/5=1024
1024+5120=6144
6144 is the answer.

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2 years ago