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777dan777 [17]
3 years ago
9

Factor completely. x2+4x−21

Mathematics
1 answer:
BartSMP [9]3 years ago
4 0
X2 + 4x - 21

Answer: (x + 7)(x - 3)
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Alexxx [7]

Answer:

3

Step-by-step explanation:

3 is a function because of the way associated with the second set

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3 years ago
What is a true statement about negative exponents?
Nadya [2.5K]

Answer:

Raising something to a negative exponent is just taking the reciprocal of the amount.

Step-by-step explanation:

Let's assume that you wanted to know what x^{-2} is.

To find it, you would take the reciprocal of the x amount. So x^{-2} becomes \frac{1}{x^{2}}.

This works because of the nature of exponents. Exponents represent the number of times you are multiplying a value by itself. So a^{3} would be equal to a · a · a. To increase the exponent, you increase the number of times the value is multiplied by itself: To increase a^{3} to a^{5}, you would have to multiply a with a^{3} two more times (a · a · a · a · a). To decrease the exponent, you must divide the value by itself. So to decrease a^{5} to a^{2}, you would have to divide a^{5} by a 3 times.

If the exponent is 0, the value is equal to 1. But you can still decrease the exponent into negative numbers. You just divide 1 by a the desired amount of times: \frac{1}{a^{3}} means that you are dividing 1 by a 3 times.

Hope this helps.

3 0
3 years ago
R= 4/3(p-q) <br><br>solve for p ​
Naya [18.7K]

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Solve for X using either sine, cosine, or tangent
vovikov84 [41]

Answer:

•12.12

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Step-by-step explanation:

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x=7√3

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•Tan30°=6√3÷x

x=6√30 ÷Tan 30

x=18√10

x=56.92

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3 years ago
A gardener installed 42.6 meters of fencing in a week. He installed 13.45 meters on Monday and 9.5 meters on Tuesday . He instal
kvasek [131]
6.55 meters of fencing. Simply subtract 13.45 meters and 9.5 meters from 42.6 meters, and then divide by 3.

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3 years ago
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