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notka56 [123]
3 years ago
6

QUICK QUICK PLZZ! 1 MINUTE ONLY

Mathematics
2 answers:
pickupchik [31]3 years ago
8 0

Answer:

5 and -5

Step-by-step explanation:

you will use a number line and count to those numbers

frosja888 [35]3 years ago
4 0

ur answer is 5 and -5

Hope it helps :)

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The diversity of algal species in a lake is calculated for a coastal area before and after an oil spill.
Svetradugi [14.3K]
I think it’s A.Indpendent Variable
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3 years ago
20 is 50% of what number? If necessary, round to the nearest tenth.
faust18 [17]

Answer:

40

Step-by-step explanation:

20 divided by 50% is 40

Brainliest?

5 0
2 years ago
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What are the solutions to the following system of equations? y = x2 + 3x − 7 3x − y = −2 (2 points) (3, 11) and (−3, −7) (11, 3)
Minchanka [31]
ANSWER

(3, 11) and (−3, −7)


EXPLANATION

The given system of equations are:


y =  {x}^{2}  + 3x - 7

and

3x - y =  - 2

or

y = 3x  + 2


We equate the two equations to obtain,



{x}^{2}  + 3x - 7 = 3x + 2

We rewrite in standard quadratic form to obtain,

{x}^{2}  + 3x  - 3x - 7 - 2 = 0


This simplifies to

{x}^{2}- 9= 0


We solve for x to obtain,


{x}^{2}  = 9

x =  \pm \sqrt{9}

x =  \pm 3

x = 3 \: or \: x =  - 3

When
x = 3

y = 3(3) + 2 = 11

When x=-3,

y = 3(  - 3) + 2 =  - 7


Therefore the solution for the system is (3, 11) and (−3, −7).
7 0
2 years ago
Read 2 more answers
What is 4.5(-20)+18=
Vikki [24]

Answer:

-72

Step-by-step explanation:

3 0
2 years ago
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What number is equivalent to 6.75×10^-4
Leni [432]
Not sure what your asking but:
0.000675 is equivalent to 6.75x10^-4

hope this helps
4 0
3 years ago
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