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schepotkina [342]
3 years ago
8

If x^2 - 16 > 0, which of the following must be true?

Mathematics
1 answer:
zimovet [89]3 years ago
5 0
The left hand side of the equation is a difference of two squares and may be factored out as follows,
                              (x - 4)(x + 4) > 0
They may be individually taken as,
                                     x - 4 > 0    ; x > 4
                                     x + 4 > 0   ; x < -4
Thus, the answer to this item is letter A. 
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What is 5.092 rounded to the nearest hundredth?
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5.09 because 2 is less then 5 so you round down
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Jennifer buys school supplies for $12.16. The sales tax is 7.25% what is the amount of tax for Jennifer’s purchases? Show how yo
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Step-by-step explanation:

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What is the value of the expression when a=18 and b=14 ?
Ivenika [448]

Answer:

1) 1/2 (18+14) - (18-14)^2

2) 1/2 (32) - (4)^2

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3) 0

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Step-by-step explanation:

Hope this helps :D

5 0
3 years ago
2
gayaneshka [121]

A+3=B

17+3=B=20

B equals 20 when A equals 17

6 0
3 years ago
-3 1/2 + ( -6 1/2) =<br> 5/8 - {-2/8} =<br> - 9/10 - 2/5 =<br> 6 3/5 - (-2 1/5)
marin [14]

Answer:

-3 1/2 + ( -6 1/2) =  -10

5/8 - {-2/8} =  7/8

- 9/10 - 2/5 =  -4

6 3/5 - (-2 1/5) = 44/5

Step-by-step explanation:

-3 1/2 + ( -6 1/2) =  <em>-7/2 + (-13/2) = -20/2 =</em><em><u> </u></em><em><u>-10</u></em>

5/8 - {-2/8} =  <em>5/8 + 2/8 = </em><u><em>7/8</em></u>

- 9/10 - 2/5 =  <em>-18-2/5 = -20/5 = </em><u><em>-4</em></u>

6 3/5 - (-2 1/5) = <em>33/5 + 11/5 = </em><em><u>44/5</u></em>

4 0
3 years ago
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