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fenix001 [56]
3 years ago
13

Please help me on this ! only the circled ones btw.

Mathematics
1 answer:
timurjin [86]3 years ago
3 0
Knobibibuvuguguvuhhh
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anyanavicka [17]
Must be

(c) 12.11.10

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8 0
3 years ago
Using the quadratic formula to solve 2x2 = 4x – 7, what are the values of x? 2 plus-or-minus StartRoot 10 EndRoot i 1 plus-or-mi
ioda

Answer:

x = 1 +/- \frac{i\sqrt{10} }{2}

Step-by-step explanation:

The equation given is:

2x^2 = 4x - 7\\\\2x^2 - 4x + 7 = 0

Using quadratic formula:

x = \frac{-b +/- \sqrt{b^2 - 4ac} }{2a}

From the question:

a = 2, b = -4, c = 7

Therefore:

x = \frac{4 +/- \sqrt{(-4)^2 - 4 * 2 * 7} }{2 * 2}\\\\x = \frac{4 +/- \sqrt{(16 - 56)} }{4}\\\\x = \frac{4 +/- \sqrt{-40} }{4}\\

=> x = 1 +/- \frac{i\sqrt{10} }{2}

7 0
3 years ago
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What are the best estimate for the amount of lemonade needed to serve six people
Romashka-Z-Leto [24]
Maybe six cups ? i’m not sure
6 0
3 years ago
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It’s for my geometry class and I don’t know how to solve it. Can someone please help me?
dusya [7]

Answer:

Below in bold.

Step-by-step explanation:

Because the 2 sides marked with the double lines are equal:

5y-1 = 2y+11

3y = 12

y = 4.

Also :

3x-5 + 2(2x+5) = 180

3x - 5 + 4x + 10 = 180

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7x = 175

x = 175/7 = 25.

5 0
3 years ago
Need help on this one thank u
Mkey [24]

Answer:

c

Step-by-step explanation:

4 0
3 years ago
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