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Trava [24]
3 years ago
5

Simplify the expression (2x − 9)(x + 6)

Mathematics
1 answer:
kenny6666 [7]3 years ago
7 0

<u>Answer:  </u>

Simplified form of given expression (2x – 9 )( x + 6 )  is 2 \mathrm{x}^{2}+3 \mathrm{x}-54

<u> Solution: </u>

We need to simplify following expression.

(2x – 9) ( x + 6)  

For sake of simplicity lets first assume 2x – 9 = A

So expression becomes A(x+6)

= Ax + A6

Now replace A by 2x – 9

= (2x – 9 ) x + (2x – 9 ) 6

=2 \mathrm{x}^{2}-9 \mathrm{x}+12 \mathrm{x}-54

On simplification, we get

=2 \mathrm{x}^{2}+3 \mathrm{x}-54

Hence simplified form of given expression (2x – 9 )( x + 6 )  is = 2 \mathrm{x}^{2}+3 \mathrm{x}-54

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Answer is 14.14
Reason
Using Pythagorean theory
a^2 + b^2 = c^2
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7 0
2 years ago
working together it takes two computers 10 minutes to send out a company's email. If it takes the slower computer 30 minutes to
allochka39001 [22]

Answer: it will take the faster computer 15 minutes to do the job on its own.

Step-by-step explanation:

Let t represent the number of minutes it will take the faster computer to do the job on its own. It means that the rate at which it does the job per minute is 1/t

If it takes the slower computer 30 minutes to do the job on its own. It means that the rate at which it does the job on its own per minute is 1/30

By working together, they would work simultaneously and their individual rates are additive. Working together it takes two computers 10 minutes to send out a company's email. It means that the rate at which both computers work together per minute is 1/10 Therefore,

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Cross multiplying by 30x, it becomes

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3x - x = 30

2x = 30

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x = 15 minutes

5 0
3 years ago
Without shipping costs, a helmet costs $56.48 from a particular online dealer. If Jordan paid $61.11 for the helmet, including s
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Answer:

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4 0
2 years ago
PLZ HELP IM IN A HURRY!
AysviL [449]

Answer:

0.078 rounded to the nearest hundreth is 0.08 and 0.078 rounded to the nearest thousandth is 0.078

Step-by-step explanation:

if you need help i will give you my email

5 0
3 years ago
2x + 4 ( -6x + 12) = -84<br><br> What is X?
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2x + 4(-6x + 12) = -84

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-22x = -132

x = -132/-22

x = 6

hope this helps, God bless!
5 0
3 years ago
Read 2 more answers
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