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Maksim231197 [3]
3 years ago
6

What are the zeros of the function f(x) = 10x2 + 9x + 2?

Mathematics
1 answer:
Gnom [1K]3 years ago
8 0

Answer:

x = -4/5  and -1/2

Step-by-step explanation:

"Finding zeroes" means find the x-values that make f(x) = 0, so we have...

0 = 10x² + 9x + 2

Use quadratic equation to solve...

x = [-9 ± √(9² - 4(10)(2))]/[2(10)]

x = [-9 ± √(81 - 80)]/20

x = [-9 ± √1]/20

x = [-9 ± 1]/20

x = (-9 + 1)/20    and (-9 - 1)/20

x = -8/20      and -10/20

x = -4/5  and -1/2

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DerKrebs [107]

Answer:

15, 30, 45, 60, and 75

Step-by-step explanation:

15x1

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15x3

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15x5

I hope this helps you

5 0
2 years ago
9. Which is the quadratic equation the
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Answer:

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2 years ago
MRS Campbell bake some muffins. She gave 4/11 of the muffins to her friends and gave 4/7 of the remainder to the guests at and e
iris [78.8K]

Answer: she baked 1225 muffins.

Step-by-step explanation:

Let x represent the number of muffins that she baked.

She gave 4/11 of the muffins to her friends. This means that the number of muffins that she gave to her friends is 4x/11. The number of muffins remaining is

x - 4x/7 = 3x/7

She gave 4/7 of the remainder to the guests at the event. This means that the number of muffins that she gave to the guests at the event is

4/7 × 3x/7 = 12x/49

The number of muffins remaining would be

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She had 225 muffins left. It means that

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3 0
2 years ago
There are 7 similarly shaped figures in a set. The largest figure is 7 inches tall. Each of the other figures is 1 inch shorter
galben [10]
The first thing we must do for this case is to find the scale factor based on the dimensions of the figures.
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 The scale factor is:
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 Answer:
 
The surface area of the smallest figure is:
 
A = 12 in ^ 2
4 0
3 years ago
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FromTheMoon [43]
144=16s^2
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3=s
3 seconds=A
4 0
3 years ago
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