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AleksandrR [38]
3 years ago
14

Please help me with this question

Mathematics
2 answers:
Lorico [155]3 years ago
8 0
This is what I got I hope it helps

tamaranim1 [39]3 years ago
7 0

Step-by-step explanation:

We need to simply like terms. Let's break this out into four different problems that are easy to solve, then we can put it all back together for the final answer.

There are four like terms in both the numerator (top) and denominator (bottom) of the fraction. Numbers, m, p, and v. We will look at each of these seperately.

What is 45/15? Easy right, just 3.

Let's move on to the harder parts.

\frac{m^{-6}}{m^{-2}}

Remember that negavite exponents mean to divide.

For example, 2^{-2} = \frac{1}{2^2} = 1/4

So we just need to apply this rule to both of these exponents to get,

\frac{m^2}{m^6}

Now remember that when dividing by exponents, the exponents subtract from each other\frac{x^y}{x^z} = x^{y-z}

So we get, m^{2-6} = m^{-4} = \frac{1}{m^4}

So far we have

\frac{3}{m^4}

Keep applying the same rules for the other two terms. Reply back if you need more help and I can keep working through with you.

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Write three equations whose solution is x=3.5
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Answer:

  • 1. 2x + 23 = 30
  • 2. 3x + 19.5 = 30
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Explanation:

Work backward:

1. 2x + 23 = 30

Start:

  • x = 3.5

Multiply the equation by 2:

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  • 2x = 7

Subtract 30 from both sides

  • 2x - 30 = 7 - 30
  • 2x - 30 = -23

Add 23 and 30 to both sides:

  • 2x + 23 = 30

2. 3x + 19.5 = 30

Start:

  • x = 3.5

Add 6.5 to both sides:

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Multiply by 3:

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Distributive property:

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3. (10x - 20)/ 5 = 3

Start:

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Multiply by 10:

  • 10x = 35

Subtract 20:

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Divide by 5:

  • (10x - 20)/ 5 = 15/5

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Out of 100 seventh and eighth grade CAVA students there were 35 students that chose Music as their elective course and the rest
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