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3 years ago

Can someone help me answer this question please?

Mathematics

1 answer:

sweet-ann [11.9K]3 years ago

5 0

Answer:

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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Simon bought 5 packs of red bouncy balls and 2 packs of yellow bouncy balls. Each package contained 8 bouncy balls. How many mor

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3 years ago

Read 2 more answers

Is that the real answer at the top and what’s the Raleigh Rocket’s score ?

liubo4ka [24]

Answer:

The scores are as follows:

Caroline Castways = 72

Raleigh Rockets = 24

Step-by-step explanation:

Let c be the Castways score and r be the Raleigh Rocket’s score

Then

According to given statements, the equations will be:

$c+r = 96\\r = \frac{1}{3}c$

From equation 2

$3r=c$

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The scores are as follows:

Caroline Castways = 72

Raleigh Rockets = 24

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3 years ago

41.3 times 10 with the power of 2

Soloha48 [4]

Answer:

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Step-by-step explanation:

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3 years ago

You buy 12 tickets and the total is $120. a student ticket is $9 and an adult ticket is $12. how many student tickets did you bu

N76 [4]

4 adult tickets were sold and 8 student tickets were sold.
How did I get this?

First, let's see what information is given:
12 tickets sold
(S)tudent ticket = $9
(A)dult ticket = $12
Total cost = $120

So, we know student tickets plus adult tickets total up to $12. We can create an equation out of this: S + A = 12

And we know $9S + $12A = $120

The variables represent the amount of tickets sold, which is unknown.
A = 12 - S , substitute this into the second equation.

9s + 12(12-s) = 120
Distribute the 12 into the parenthesis.

9s + 144 - 12s = 120
Combine like terms

-3s + 144 = 120
Subtract both sides by 144, left side cancels out.

-3s = -24
s = -24/-3
s = 8

So, 8 student tickets were sold. Plug the value of s into our first equation.

A = 12 - 8
A = 4 (adult tickets)

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4 years ago

If x is a real number such that x^3 =64 then x^2 + x=?

liq [111]

X^3=64

x= 3 square root of 64

x=4

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3 years ago