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3 years ago

Factor -9z + 12 A; -3(2z + 4) B: -9(z - 4) C: -9(z + 12) D: -3(3z - 4)

Mathematics

1 answer:

Nonamiya [84]3 years ago

4 0

- 9z + 12
= - 3 ( 3z - 4 )

The answer is D

i am a mathematics teacher. if anything to ask please pm me

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Solve the equation x^2-4x+85=0

lara [203]

Can't factor
use quadratic
for
ax^2+bx+c=0
x= $\frac{-b+/- \sqrt{b^2-4ac} }{2a}$

given
1x^2-4x+85=0
a=1
b=-4
c=85

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x= $\frac{4+/- \sqrt{16-340} }{2}$
x= $\frac{4+/- \sqrt{-324} }{2}$
x= $\frac{4+/- (\sqrt{-1})(\sqrt{324}) }{2}$
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3 years ago

5x6-1+3=28 brackets or braces should be added

Artyom0805 [142]

5 · (6 - 1) + 3
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3 years ago

The GCF of 15 and 27 is _____.

daser333 [38]

The GCF if 3. Please mark Brainliest!!!

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3 years ago

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PIT_PIT [208]

Answer:

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Step-by-step explanation:

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3 years ago

Find C. to form completing Square<br> <img src="https://tex.z-dn.net/?f=x%5E%7B2%7D%20-%5Cfrac%7B3%7D%7B2%7Dx%20%2B%20C" id="Tex

nata0808 [166]

Answer:

c = 9/16

Step-by-step explanation:

(a-b)²

a² - 2ab + b²

here a = x

b = ?

x² - (2)(x)(?) + ?²

Now we can see that -(2x)? = -3x/2

-2x? = -3x/2

cancel -x on both sides

2? = 3/2

? = 3/2 * (2)

? = 3/4

so b = 3/4

(x² - 3x + 9/16) = (x-3/4)²

so from the expression we can see that C = 9/16

3 0

3 years ago