1 year ago

Which of the following BEST describes how to use the addition property of equality to isolate the variable y

Mathematics

1 answer:

Alexandra [31]1 year ago

5 0

Answer: C) add 12 to both sides

Reason:

We add 12 to the left side to undo the -12, which will get y by itself.

We must do the same thing to both sides to keep things balanced.

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the average or the blank is the blank divided by the blank or the amount of numbers being divided is what

wel

Answer:

Numerrator is the denominator divieded by the other equations is the sum.

Step-by-step explanation:

Hope I helped

8 0

3 years ago

Complete the expressions that would make them a perfect square trinomial.

kirza4 [7]

Answer:

a) 16

b) 100

c) 64

d) $\frac{81}{4}$ [/tex]

Step-by-step explanation:

Perfect square trinomial:

A perfect square trinomial has the following format:

$(x \pm a)^2 = x^2 \pm 2ax + a^2$

x² – 8x

$x^2 - 8x = x^2 - 2ax$

So 2a = 8, a = 4. Then

$a^2 = 4^2 = 16$

The perfect square trinomial is $x^2 - 8x + 16$

b. x2 + 20x +

2a = 20, so a = 10

$a^2 = 10^2 = 100$

The perfect square trinomial is $x^2 + 20x + 100$

x² – 16x +

2a = -16, so a = -8.

$a^2 = (-8)^2 = 64$

The perfect square trinomial is $x^2 - 16x + 64$

d. x2 + 9x +

$2a = 9$ , so $a = \frac{9}{2}$

$a^2 = (\frac{9}{2})^2 = \frac{81}{4}$

The perfect square trinomial is $x^2 + 9x + \frac{81}{4}$ [/tex]

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2 years ago

Which of the following is a simpler way to write StartFraction cosine theta Over sine theta EndFraction?

bazaltina [42]

I think D(cot E)
cot= cos/sin

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3 years ago

Select all expressions that are equivalent to<br> 3 x 8 x (-9)

densk [106]

Answer:

-216

I dont know if that's right

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2 years ago

What is the total length of weather stripping needed for 12 windows that each measure 90 cm by 12?

marishachu [46]

Area or perimeter????

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3 years ago