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kirill115 [55]
1 year ago
8

2x^3-16x^2-40x=0 factor

Mathematics
1 answer:
ExtremeBDS [4]1 year ago
3 0

The given expression is

2x^3-16x^2-40x=0

We extract the common factor 2x.

\begin{gathered} 2x(x^2-8x-20)=0 \\ 2x=0\rightarrow x=0 \\ x^2-8x-20=0 \end{gathered}

The first solution is 0.

Now, we solve the quadratic expression. We have to find two numbers whose product 20 and whose difference is 8. Those numbers are 10 and 2.

x^2-8x-20=(x-10)(x+2)<h2>Hence, the given expressions expressed, as factors, is</h2>2x^3-16x^2-40x=x(x-10)(x+2)

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Daniel deposits $300 into an account that earns 16% interest annually. Which equation can be used to model his account balance,
MAVERICK [17]

Answer:

y=300(1+0.16)^x

Step-by-step explanation:

<h2>This account  can be  modeled using the compound interest formula.</h2><h2>the compound interest formula is expressed as</h2>

 A= P(1+r )^t

Where

A =final amount  = y

P=initial principal balance = $300

r=interest rate  = 16%= 0.16

t=number of time periods elapsed= x

Hence the equation to model his account balance/ final amount A (y) after time (x) years is

y=300(1+0.16)^x

5 0
2 years ago
In the past you paid $800
soldier1979 [14.2K]
Hello! $800 was the past amount for rent and now it's $900. 900 - 800 is 100. that's a $100 difference. In order to find the percent increase in the rent, we can write and sovle a proportion. It would be set up as change/original = x/100, where change is difference between two numbers and original is the previous price. It would be set up like this:

100/800 = x/100

Let's crossmultiply the values. 100 * 100 is 10,000. 800 * x is 800x. That makes 10,000 = 800x. Now, divide each side by 800 to isolate the x. 800x/800 cancels out. 10,000/800 is 12.5 or 12.5%. Let's check this by multiplying by 112.5%. 800 * 112.5% (1.125) is 900. That's what we're looking for! There. x = 12.5%. The percent increase is 12.5%.


5 0
3 years ago
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Graph<br><br> F(x)=4x-3<br><br><br> Can someone help me?
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3 years ago
Negative one over two equals negative five over eighteen h
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Answer:

the answer is h = 5 / 9.

Step-by-step explanation:

Given is "negative one over two equals negative five over eighteen h"

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Cancelling negative signs from both sides,

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Dividing both sides by 18,

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h = 5/ 9

Hence, the answer is h = 5 / 9.

3 0
3 years ago
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