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3 years ago

15

Use the properties of equality to solve the equation 3x+2-x=11x+9. State which property justifies your first step and why you ch

ose it. Check your solution

1 answer:

vfiekz [6]3 years ago

8 0

3x + 2 - x = 11x + 9
3x - x + 2 = 11x + 9
2x + 2 = 11x + 9

X= - 7 over 9

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<img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B%28%20%7B%20-%20x%7D%5E%7B%20-%201%7D%29%20%5E%7B0%7D%20%20%7D%7B4%20%7By%7D%5E%7

Kipish [7]

Answer:

1/4y

Step-by-step explanation:

(-x^-1)^0/(4y^-1*y^2)

anything to the power of 0 gives you 1,

1/(4y^-1*y^2)

-1+2=1

1/4y^1=1/4y

8 0

3 years ago

Given that ∠ABD = 71°, which equation could be used to solve problems involving the relationships between ∠DBC and ∠ABC?

dexar [7]

Step-by-step explanation:

one could be that all the angles add up to 180

180-71= 109

∠DBC and ∠ABC must add up to 109 degrees

5 0

3 years ago

F(x)= √x-5. find f-2

rodikova [14]

For this case we have:

Be a function of the form $y = f (x)$

Where:

$f (x) = \sqrt {x-5}$

If we want to find f (-2), we substitute $x = -2$ , then:

$f (-2) = \sqrt {-2-5}\\f (-2) = \sqrt {-7}$

Since we have a negative root, the result will be given by complex numbers. By definition:

$\sqrt {-1} = i$

So:

$f (-2) = \sqrt {7} i$

Answer:

$f (-2) = \sqrt {7} i$

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3 years ago

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balandron [24]

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3 years ago

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