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GREYUIT [131]
3 years ago
6

Could someone explain why (-4)² is equal to 16 but -4² is equal to -16​

Mathematics
2 answers:
erica [24]3 years ago
8 0

Answer:

It's all about the brackets.

Step-by-step explanation:

If we do (-4)^2, the brackets make it -4 x -4 and the two negatives make a positive of 16.

If we do -4^2, that means that the 4 is squared before putting the minus sign there so you have 4x4 = 16 then put the minus to get -16.

Hope this helps!

treviglaslibrary

Afina-wow [57]3 years ago
4 0

Answer:

4^2= 16

Step-by-step explanation:

This is because when you square something your are multiplying that number by itself. So in this case you must multiply 4 x 4 which is sixteen. Another example of this is 3^2 which is 9. In this case you must multiply 3 x 3 which is nine.

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LenaWriter [7]

Answer:

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Step-by-step explain

Round it to the nearest $100

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6 0
3 years ago
Need help on this one too
amid [387]

Answer:

If this is for a triangle then the answer is 45°

Step-by-step explanation:

Triangles are always 180° so if you have a right angle know that, that means the angle is 90°. So angle CAB is 90° and angle DAB is 45°. You take 180° and subtract 90° which leaves you with 90°. Then you take that 90° and subtract 45° and that leaves you with 45°.

8 0
3 years ago
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bezimeni [28]

Answer: C

Step-by-step explanation:

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6 0
3 years ago
The volume of a cone with radius r and height h is given by the formula V =
Natasha_Volkova [10]

Answer:

7536 ft^3

Step-by-step explanation:

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6 0
4 years ago
What values of x satisfy x 2 + 2 x = 24?
PtichkaEL [24]

Answer:

x = -6   x=4

Step-by-step explanation:

x^ 2 + 2 x = 24

Subtract 24 from each side

x ^2 + 2 x-24 = 24-24

x^2 +2x -24 = 0

Factor

What 2 numbers multiply to -24 and add to 2

6*-4 = -24

6+-4 = -2

(x+6) (x-4) =0

Using the zero product property

x+6 =0           x -4=0

x+6-6=0-6     x-4+4=0+4

x = -6   x=4

5 0
3 years ago
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