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monitta
2 years ago
6

What are the solution of the equation x^2- 4x -32 = 0 ?show your work and justify each step.

Mathematics
1 answer:
soldier1979 [14.2K]2 years ago
6 0
X^2-4x-32=0

(x+a)(x+b)

x^2-(a+b)x+ab

a+b=4
ab=-32

a=-b+4
(-b+4)b=-32

-b^2+4b=-32
b^2-4b-32=0
b=8,-4

If b=8, a=-4
If b=-4, a= 8

Plug in a and b to (x+a)(x+b)
x= -4, 8
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Hello there!

Let's put these into simpler terms:
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10 - 8 = 2
2 - 7 = -5

We are now left with:
2s - 5, which is your simplified expression.

I hope this helps!
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3 years ago
Meridith plays softball, she gets a hit about 35% of the time. What percent does she not get a hit?
kotykmax [81]

Answer:

Meridith doesn't get hit 65% of the time.

Step-by-step explanation:

If you take the 35% that she does get hit and subtract that from 100% then you will get 65%. (100-35=65)

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3 years ago
C. Assume someone has an average balance account with a bank that costs $35 a month but earns
Elodia [21]

Answer:

<em>The total interest earned after subtracting the monthly $35 </em>

<em>service fee = $975 - $35 = $940</em>

Step-by-step explanation:

Bank fee cost per month = $35

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The total amount in the account until the 15th = $100,000

The total amount in the account from the 15th to the 30th = $95,000

Interest Earned?

<em>Interest earned for first 15 days:</em>

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                               = $100,000 times 0.001/2

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<em>Interest earned from 15th to the 30th:</em>

<em>                                  </em>= $95,000 times 1%/2

                                 = $95,000 times 0.001/2

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Interest earned for <em>first 15 days + Interest earned from 15th </em>

<em>to the 30th =  </em>$500 + $475 = $975

So, the total interest earned after subtracting the monthly $35

service fee = $975 - $35 = $940

<em>Keywords: interest, interest rate</em>

<em>Learn more about interest calculation from brainly.com/question/3256069</em>

<em>#learnwithBrainly</em>

8 0
3 years ago
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Kazeer [188]

Answer:

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Step-by-step explanation:

You have to find the y-intercept, b. Do this by substituting in the x and y values into the equation:

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3 0
3 years ago
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602,107.

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