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Illusion [34]
3 years ago
15

Find the zeros of the function: f(x) = x^2 - 4x - 21

Mathematics
1 answer:
IrinaK [193]3 years ago
5 0

Answer:

x = 7, x = -3

Step-by-step explanation:

We can find the zeros by factoring the equation using the zero product property.

x^2-4x-21 = 0

(x-7)(x+3) = 0

<u>x-7 = 0</u>

x = 7

<u>x+3 = 0</u>

x = -3

Zeros are x=7 and x= -3.

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alexgriva [62]

Answer:

y = -3/2x + 3

Step-by-step explanation:

First, know that slope-intercept form is y = mx + b. Since our y-intercept is 3, we can plug that in for B, and since the slope goes down 3 and over to the right 2, it is -3/2. So, when everything's plugged in, we get y = -3/2x + 3.

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8 0
3 years ago
What is -11 2/3 - (-4 1/5)
rosijanka [135]

Answer:

-7 7/15

Step-by-step explanation:

-11 2/3 -(-4 1/5) = -11 2/3 + 4 1/5. Now, we need to find the LCM of 3 and 5. The LCM of 3 and 5 is 15 because 15 is the lowest number that can divide both 3 and 5 separately and both results will still be whole numbers.

Now, we have -11 10/15 + 4 3/15.

-11 10/15 + 4 3/15 = -7 7/15.

4 0
3 years ago
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quester [9]

Answer:

Step-by-step explanation:

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Find the value of x<br> −8(x−6)=32
RUDIKE [14]

Answer:

x = 2

Step-by-step explanation:

-8(x-6) = 32 (distribute)

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x = 2

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Step-by-step explanation:

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