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kipiarov [429]
3 years ago
12

Find all of the zeros of f(x) = 5x^2 +40x-100

Mathematics
2 answers:
butalik [34]3 years ago
7 0

Answer:

B

Step-by-step explanation:

Given

5x² + 40x - 100

To find the zeros equate to zero, that is

5x² + 40x - 100 = 0 ( divide all terms by 5 )

x² + 8x - 20 = 0

To factor the quadratic

Consider the factors of the constant term (- 20) which sum to give the coefficient of the x- term (+ 8)

The factors are + 10 and - 2, since

10 × - 2 = - 20 and 10 - 2 = + 8, thus

(x + 10)(x - 2) = 0

Equate each factor to zero and solve for x

x + 10 = 0 ⇒ x = - 10

x - 2 = 0 ⇒ x = 2

Zeros are x = - 10 and x = 2 → B

Umnica [9.8K]3 years ago
4 0

Answer:the answer is B

Step-by-step explanation:

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A volleyball uniform costs $15 for the shirt, $12 for shorts, and $8 for socks. Which expression applies the distributive proper
bixtya [17]

Answer:

I think it would be 350$

Step-by-step explanation:

ok so you have to buy 10 shirts so you need to set up your problem which would be 10(12+8+15)

Then you would have to actually distribute which would give you 120+80+150

Finally you just add all of your numbers together which would be 350$

7 0
3 years ago
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Find the slope of the line that passes through the points (1,-4) and (3,-1).
sveta [45]

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8 0
3 years ago
Please help me thank you!!
AURORKA [14]
Emma completed the problem correctly i believe
5 0
3 years ago
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ANTONII [103]

Answer:

44º

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Step-by-step explanation:

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5 0
2 years ago
Let u = (1,2), v = (−3,4), and w = (5,0)
sergij07 [2.7K]

Answer:

w-2u-v

Step-by-step explanation:

Given are three vectors u, v and w.

In R^2 we treat first element as x coordinate and 2nd element as y coordinate.

Thus we mark (1,2) in the I quadrant, (-3,4) in II quadrant and (5,0) on positive x axis 5 units form the origin.

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We have to find the values of a and b

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Hence

w = 2u-v

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