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Sidana [21]
3 years ago
14

What are the zeros of f(x) = x2 + x - 12?

Mathematics
2 answers:
ycow [4]3 years ago
5 0

Answer:

(x+4)(x-3) or A

Step-by-step explanation:

I'm going to assume that you meant to write x² and not x2

which means we have

x²+x-12

and we need to factor this

to do this we need two numbers that add up to 1 (b) but mulitply to -12 (a*c)

our two numbers are

4, -3

Which means the answer is

(x+4)(x-3)

noname [10]3 years ago
5 0

{ \large{ \bf{f(x) = x {}^{2}  + x - 12}}}

{ \large{ \bf{zeros =  \dfrac{ - b± \sqrt{b {}^{2} - 4ac } }{2a} }}}

{ \large{ \bf{zeros =  \dfrac{ - 1± \sqrt{1 {}^{}  + 48 } }{2} }}}

{ \large{ \bf{zeros =  \dfrac{ -1±  7 }{2} }}}

{ \large{ \bf{➢ \:  \: zeros =   - 4 \:  \: and \: 3 }}} \:  \:  \:  \:  \:  \: (ans)

<h2>Opt A.) is the answer</h2>
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Arrange the numbers in increasing order. -3, +8, -4, +1, -7
Bad White [126]

Answer:

-7,-4,-3,+1,+8

Step-by-step explanation:

The bigger the negative number, the less it's worth

3 0
3 years ago
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A where and a cylinder have the same radius and height . The volume of the cylinder is 48 cm 3. What is the volume of the sphere
SOVA2 [1]

Given:

Sphere and cylinder have same radius and height.

Volume of the cylinder = 48 cm³

To find:

The volume of the sphere.

Solution:

Radius and height of cylinder are equal.

⇒ r = h

Volume of cylinder:

V=\pi r^2h

Substitute the given values.

48=\pi r^2r   (since r = h)

48=\pi r^3

48=3.14 \times r^3

Divide by 3.14 on both sides.

$\frac{48}{3.14} =\frac{3.14\times r^3}{3.14}

$15.28=r^3

Taking cube root on both sides, we get

2.48 = r

The radius of the cylinder is 2.48 cm.

Sphere and cylinder have same radius and height.

Volume of sphere:

$V=\frac{4}{3} \pi r^3

$V=\frac{4}{3} \times 3.14 \times (2.48)^3

V=63.85

The volume of the sphere is 63.85 cm³.

6 0
3 years ago
Last year, there were 380 students at woodland middle school. This year, the student population will increase by 5%. What will b
olga_2 [115]
399 because 380 x .05 =19 and 19+380
=399
5 0
3 years ago
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Answer correct for brainliest and also get a thanks !:-) you don't have to answer B.
skelet666 [1.2K]
I hope this helps you

7 0
3 years ago
1- write the x- coordinate and y- coordinate of points .<br>(please help me tomorrow is my exam)​
BigorU [14]

The answer to your questions is: 4, 2

3 0
3 years ago
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