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2 years ago

Which surveys would a sample be appropriate for? Mark all that apply.

Mathematics

2 answers:

krok68 [10]2 years ago

4 0

Answer:

a d

Step-by-step explanation:

Leokris [45]2 years ago

3 0

Answer:

..............................

Step-by-step explanation:

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Factor the quadratic expression in the equation y=2x^2+28x+96 and use the factors to find the zeros of the equation. Then, use t

gavmur [86]

Answer:

$x=-7$

Step-by-step explanation:

We have been given an equation $y=2x^2+28x+96$ . We are asked to find the zeros of equation by factoring and then find the line of symmetry of the parabola.

Let us factor our given equation as:

$2x^2+28x+96=0$

Dividing both sides by 2:

$x^2+14x+48=0$

Splitting the middle term:

$x^2+6x+8x+48=0$

$(x^2+6x)+(8x+48)=0$

$x(x+6)+8(x+6)=0$

$(x+8)(x+6)=0$

Using zero product property:

$(x+8)=0\text{ (or) }(x+6)=0$

$x+8=0\text{ (or) }x+6=0$

$x=-8\text{ (or) }x=-6$

Therefore, the zeros of the given equation are $x=-8\text{ (or) }x=-6$ .

We know that the line of symmetry of a parabola is equal to the x-coordinate of vertex of parabola.

We also know that x-coordinate of vertex of parabola is equal to the average of zeros. So x-coordinate of vertex of parabola would be:

$\frac{-8+(-6)}{2}=\frac{-14}{2}=-7$

Therefore, the equation $x=-7$ represents the line of symmetry of the given parabola.

4 0

2 years ago

Please help asap!!!!!!!!!!!!!!!!

vovangra [49]

Im not sure but i think its A because you have no value to multiply 3 so you just multiply it by itself.It would be a negative because you cant divide 3 by 2.so it would be A.-x9y2.
i hope i was correct and helped if not you can go ahead and delete my answer:)

6 0

3 years ago

A = {1, 2, 5, 7} B = {3, 4, 6, 7} C = {0, 5, 8, 9} Find B U C.

drek231 [11]

BUC ={0,3,4,5,67,89}

I hope it will be answer of your question

3 0

2 years ago

Read 2 more answers

Does anyone know part B to this?!?!? I will give brainilest

fomenos

Answer: