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Alona [7]
3 years ago
8

Simplify:

Mathematics
2 answers:
VLD [36.1K]3 years ago
5 0
It’s actually B because just put it in a calculator
Komok [63]3 years ago
3 0

Answer:

Its B

Step-by-step explanation:

I got my answer right

                            ---SLatt

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What two numbers' sum=-4 and product=-2
n200080 [17]

Let <em>a</em> and <em>b</em> be the two numbers. Then

<em>a</em> + <em>b</em> = -4

<em>a b</em> = -2

Solve the second equation for <em>b</em> :

<em>b</em> = -2/<em>a</em>

Substitute this into the first equation:

<em>a</em> - 2/<em>a</em> = -4

Multiply both sides by <em>a</em> :

<em>a</em>² - 2 = -4<em>a</em>

Move 4<em>a</em> to the left side:

<em>a</em>² + 4<em>a</em> - 2 = 0

Use the quadratic formula to solve for <em>a</em> :

<em>a</em> = (-4 ± √(4² - 4(-2))) / 2

<em>a</em> = -2 ± √6

If <em>a</em> = -2 + √6, then

-2 + √6 + <em>b</em> = -4

<em>b</em> = -2 - √6

In the other case, we end up with the same numbers, but <em>a</em> and <em>b</em> are swapped.

7 0
2 years ago
Please help fast ill give brainest
tia_tia [17]

make a graph and put the weeks and the change wich is -20 a day until the end of the four weeks


:every week 4 the city gets -20 degrees celsius colder. This means that every 4 weeks the tempature decreases then goes bac kto its origonal

8 0
3 years ago
Read 2 more answers
How many 5/8s are in 3
In-s [12.5K]
Well, in 3 there are 24/8s.
That can fit four 5/8's in it with 4/8s left over.
So your answer is 4
8 0
3 years ago
Read 2 more answers
(6, –3) and (6, –11) (6, –5) and (6, –9) (10, –7) and (2, –7) (8, –7) and (4, –7)
ivolga24 [154]

i really appreciate this post you are the real mvp

3 0
3 years ago
Which expression is equivalent to 9^-2?<br> O-81<br> O-18<br> O1/81<br> O1/18
kherson [118]

Answer:

Option C - 1/81

Step-by-step explanation:

9^(-2) = 1/(9^2) [ Because a^(-m) = 1/(a^m) ]

so, 1/(9²) = 1/81.

Hope this helps you.

5 0
3 years ago
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