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weeeeeb [17]
3 years ago
12

Why does -2 to the second power equal -4 but (-2) to the second power equals 4?

Mathematics
2 answers:
Kruka [31]3 years ago
6 0
Your final answer would be 4
kirza4 [7]3 years ago
3 0
In -2^2 since the negative sign is not in parentheses you would solve it as 2×2=4 and then have the negative sign so it would be -4. With the parentheses you are saying that the term you are squaring is (-2) and two negatives make a positive so it would be (-2)×(-2)= 4.
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Anything helps please help me!
dimaraw [331]
5 1/2 = 11/2
11/2 x 3/4 = 33/8 = 4 1/8
answer is B. 4 1/8
8 0
3 years ago
Write y=1/8x+7 in standard form using intergers
lakkis [162]

Answer:

B) -x+8y=56

Step-by-step explanation:

y=1/8x+7

Multiply by 8 to clear the fraction

8y = 8(1/8x+7)

Distribute

8y = 8*1/8x +8*7

8y = x+56

Subtract x from each side

-x+8y = x-x+56

-x+8y = 56

4 0
3 years ago
A 40 yd polygon and 15 yd polygon are similar. find the area of their ratios
Lubov Fominskaja [6]
Because we are dealing with area, we have to square the difference of the 2 polygons.40 / 15 = <span> <span> <span> 2.6666666667 </span> </span> </span> <span> <span> <span> 2.6666666667^2 = </span></span></span> <span> <span> <span> 7.1111111111
</span></span></span>
<span><span><span> </span> </span> </span> So, the 40 yard polygon has <span> <span> 7.1111111111</span>times the area of the 15 yard polygon.
</span>
<span />
7 0
3 years ago
Read 2 more answers
How long does it take to go 60 miles if you going 360 miles per hour ​
Rufina [12.5K]

Answer:

10 mins

Step-by-step explanation:

60/360 = .166667 hours

take this answer an multiply by 60 min to get number of minutes

10 mins.

8 0
3 years ago
Find the product: (2x –2)(x –1)a.2x2 + 4x -2b.2x2 + 4x + 2c.2x2 -4x + 2d.2x2+ 2
lesya [120]

FOIL:

First:

2x^2

Outside:

-2x

Inside:

-2x

Last:

2

Put it together:

2x^2 -2x -2x +2

combine like terms:

2x^2 - 4x +2

3 0
3 years ago
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