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gizmo_the_mogwai [7]

3 years ago

7

Can someone help me answer this question please?

1 answer:

sweet-ann [11.9K]3 years ago

5 0

Answer:

A

Step-by-step explanation:

f(x) = (x + 3)(x + 2)(x - 3)

The three roots are going to give - 18 so only A and D can be correct. Why minus? because at some point 3 and 2 and - 3 will all be multiplied together. When they are, the result is - 18

So why did I write x + 2 rather than x - 2? Because the roots turn an equation into 0. You are looking for a way to make x + 2 = 0. It will do that when x = - 2

which is what you were given.

Now to get the answer

(x - 3)(x + 3) = x^2 - 9

(x^2 - 9)(x + 2) = x^3 + 2x^2 - 9x - 18 = f(x)

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The population of pets in Mr. Jones neighborhood in Bartlett has declined in the pass year by roughly 30%. Residents hypothesize

Shtirlitz [24]

Answer:

128 4/7

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1 year ago

Simplify the expression x^2+x-2/8x^2+4x/3x^2+10x+8

irina [24]

Answer:

Step-by-step explanation:

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6 0

3 years ago

Consider the standard form equation 2x-Ry=30. What value of R causes the graph to have a y-intercept of 5?

DochEvi [55]

Answer:

R = 6

Step-by-step explanation:

Given the equation of the line is 2x - Ry = 30

We know that the equation of a line with a as x-intercept and b as y-intercept is $\frac{x}{a} +\frac{y}{b} =1$

Now convert the above given line to the standard form

Divide the line by 30 we get

$\frac{2x}{30}-\frac{Ry}{30} =\frac{30}{30}$

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Here the y-intercept is 30/R

Given y-intercept = 5

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4 0

3 years ago

As a fundraiser, the Music Boosters wrapped gifts at the mall one weekend. Out of the 100 gifts they wrapped, 3/10 were for wedd

dangina [55]

Answer: The fraction of the gifts were for birthdays = $\dfrac{33}{100}$ .

Step-by-step explanation:

Given: fraction of gifts for weddings = $\dfrac{3}{10}$

fraction of gifts for baby showers = $\dfrac{37}{100}$

Rest of the gifts = $1-\dfrac3{10}-\dfrac{37}{100}$

$=\dfrac{100-30-37}{100}\ \ \ [\text{Making like fractions}]\\\\=\dfrac{100-67}{100}\\\\=\dfrac{33}{100}$

Hence, the fraction of the gifts were for birthdays = $\dfrac{33}{100}$ .

4 0

3 years ago