Pls help with this math question

Mathematics

2 answers:

Korvikt [17]2 years ago

3 0

Answer:

I would say A

Step-by-step explanation:

if wrong sorry the graph kinda blurry

Citrus2011 [14]2 years ago

3 0

Answer:

you can subtitute x=-10 and see f(x) , f(x) here is y

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Which of the following expressions are equivalent to 2/x^6-y^6? Choose all that apply.

enot [183]

Answer:

A and C

Step-by-step explanation:

Equivalent expressions are expression which when simplified to lowest terms are equal.

Simplify each answer choice to find the expression which simplifies to $\frac{2}{x^6-y^6}$ .

A. Multiply the exponents 3*2 = 6. This is equal.

B. Multiply numerators and denominators. Here the numerator will be 1*1 = 1. It does not equal 2 in the numerator.

C. Here the numerator does equal 2. The denominator multiplies to $(x^3 - y^3)(x^3+y^3)\\x^6 -x^3y^3 + x^3y^3 -y^6\\x^6 - y^6$

This is equal.

D. The denominator will have three terms here when simplified. This will not be equal.

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Suppose that X is a random variable with mean 30 and standard deviation 10. Also suppose that Y is a random variable with mean 2

Bas_tet [7]

Part a: For variable X using z score you have (x-30)/10, replace X for this expression in (a), i mean Z=2+10((x-30)/10) = 2+x-30= put this in the way of z score = (x-18)/1, so the mean is 18 and standard deviation is 1.
Part b: Z=X+Y= (x-30)/10 + (x-20)/8 = solve adding fractions = (18x-440)/80 now divide all the numbers between 18 (because you need to show as z score way) = (x-24.4)/4.4, so the mean is 24.4 and standard deviation is 4.4.
For part c,do the same.

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Neglecting air resistance, an object in free fall accelerates at 32 feet per second squared. So the velocity of the object t sec

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The correct answer is B

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How to solve 3x^2-72 = 0 using square root property?

erik [133]

3x^2 - 72 = 0
3x^2 = 72
x^2 = 24
x = squareroot(24)
x = 4.9

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