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bixtya [17]
3 years ago
5

Please help!

Mathematics
1 answer:
finlep [7]3 years ago
8 0

Answer:

Step-by-step explanation:

Because it is the correct answer

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Elsa's store purchased a sofa at a wholesale price of $350, and sold it for $630. What is the percent of markup?
nataly862011 [7]

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980%

Step-by-step explanation:

8 0
3 years ago
Solve with quadratic formula or factor square 2x to the 2nd power -x =3
BabaBlast [244]

Answer:

Step-by-step explanation:

2x²-2x=3

2x²-2x -3 = 0

note :

the discriminat of each quadratic equation : ax²+bx+c=0 ....(a ≠ 0) is :

Δ = b² -4ac

1 )  Δ > 0  the equation has two reals solutions : x =  (-b±√Δ)/2a

2 ) Δ = 0 : one solution : x = -b/2a

3 ) Δ < 0 : no reals solutions

***** in this exercice : a = 2   b = -2   c = -3

Δ = (-2)² -4(2)(-3) =28

x =  (2±√28)/6

4 0
4 years ago
How do I solve -2i(-5+10i)
Snowcat [4.5K]

Answer:

-20i² + 10i

Step-by-step explanation:

- 2i (-5 + 10i)

distribute

- 2i (-5) + - 2i (10i)

10i - 20i²

- 20i² + 10i

4 0
3 years ago
Find the slope between (5,-3) and (-1,6).
hram777 [196]
The slope formula is y2-y1/x2-x1, so you plug in you numbers to get -3-6/5+1. This simplified to -9/6, or -3/2
6 0
4 years ago
Which of the following best describes the graphs below?​
Evgen [1.6K]

I think the answer is either b or c i am not sure

5 0
4 years ago
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