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aleksley [76]
3 years ago
8

Subtract (5x2 3) −(2x2 4x − 12)

Mathematics
2 answers:
timurjin [86]3 years ago
6 0
Distribute invisible-1 to the 2x^2+4x-12
5x^2+3-2x^2-4x+12
group like terms
5x^2-2x^2-4x+3+12
3x^2-4x+15
Airida [17]3 years ago
3 0

Answer:

3x2 − 4x + 15

(just took the quiz)


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There are 36 kids in a dance class. Last week, 29 were present in class. what percent showed up?
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ANSWER: 80.5%
-Divide the amount of kids who showed up (29 kids), by the total amount (36 kids) 
29/36 = 80.5%

Aye, Hope this Helps!

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2 years ago
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Step-by-step explanation:

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3 years ago
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3 years ago
The average of m, n, and -1 is 0. What is the value of m+n?
Oxana [17]

Answer: 1

==========================

Explanation:

To average a bunch of numbers, we add them up and divide by how many numbers there are. In this case, we'll divide by 3 since there are 3 numbers.

Add up the values: m+n+(-1) = m+n-1

Divide by 3: (m+n-1)/3

Set this equal to 0 since we're told the average is 0: (m+n-1)/3 = 0

Now let's isolate m+n. It might help to replace "m+n" with another variable, say P to get (P-1)/3 = 0.

Solve for P

(P-1)/3 = 0

P-1 = 3*0 .... multiply both sides by 3

P-1 = 0

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m+n = 1 .... replace P with m+n

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5 0
3 years ago
Consider the equation 0.75⋅10^w/3=30
Nastasia [14]

Answer:

The value of w is:

w=3\cdot log_{10}(40)

Step-by-step explanation:

We have to calculate w from the equation

0.75\cdot 10^{w/3}=30

The solution has to be expressed as a logarithm in base 10.

We can solve it like:

0.75\cdot10^{w/3}=30\\\\10^{w/3}=30/0.75=40\\\\(w/3)log_{10}(10)=log_{10}(40)\\\\w/3=log_{10}(40)\\\\w=3\cdot log_{10}(40)

The value of w is:

w=3\cdot log_{10}(40)

5 0
3 years ago
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