Hey:) can you please help me posted picture of question

Mathematics

2 answers:

kupik [55]3 years ago

7 0

Option A gives the correct answer.

Step by step solution is listed below:

$( x^{2} +x+8)(x-5) \\ \\ 
=x( x^{2} +x+8)-5( x^{2} +x+8) \\ \\ 
= x^{3}+ x^{2} +8x-5 x^{2} -5x-40 \\ \\ 
= x^{3}-4 x^{2} +3x-40$

tatiyna3 years ago

6 0

We have the following expression:
(x2 + x + 8) (x - 5)
Rewriting we have:
x3 + x2 + 8x + (-5x2 - 5x - 40)
Adding similar terms:
x3 - 4x2 + 3x - 40
Answer:
The solution for this case is given by:
x3 - 4x2 + 3x - 40

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3 years ago

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Easton is going to invest $340 and leave it in an account for 8 years. Assuming the interest is compounded quarterly, what inter

Jlenok [28]

Answer:

100.7%

Step-by-step explanation:

Since the interest is compounded quarterly, and there are 4 quarters per year, that would leave us with 32 quarters total where interest is acquired. Now, we need to find the interest rate, that would be required in order to end up with 420 dollars after 32 quarters.

We can setup a formula using our period of time and the money he invested into the bank:

$340(x)^{32}=420$