MATHEMATICS MIDDLE SCHOOL

Which expression demonstrates the use of the commutative property of addition in the first step of simplifying the expression (–3 + i) + (18 + 5i)?(–3 + i) + (18 + 5i) + 0
–3 + (i + 18) + 5i
(–3 + 18) + (i + 5i)
–(3 – i) + (18 + 5i)

Answers

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How do you solve. 8-2(5x-3)

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The answer is -10x+14
First you distribute the -2 into the 5x-3 to get -10x+6. Then you add the 6 and 8 to get 14 then add then on both sides of the equation to get 10x=14 then divide each by 10 to get x=1.4. Hope this helps you solve questions like this one.

How can I anwser this one? ?
4x2+16x=0

Answers

4x^2+16x=0

(4x^2+16x)/(4) =(0)/(4)

x^2+4x=0

x(x+4)=0

x=0

x+4=0

x+4-4=0-4

x=-4


x=-4,0
Divide each side of the equation by 4 :

x² + 4x = 0

Factor the left side:

x (x + 4) = 0

This equation is true if x=0 or if x=-4 , so those are the two solutions.

Alejandro bought 3 music albums for $9.99 per album .use mental math to find the total cost of the albums.

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Answer:

29.97

Step-by-step explanation:

9.99x3=29.97

How does understanding place value help you subtract across zeros?

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I was told that it's a strategy to help you get better at math

What is the amount of money an item is increased above the original price?

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That is known as taxes.

Liam had $250. Then, he and his classmates bought a present for their teacher, evenly splitting the $120 among the e of them. How much money does Liam have left? Write your answer as an expression.

Answers

Answer:

250-(120)/(e)

Step-by-step explanation:

We have been given that Liam and his classmates bought a present for their teacher, evenly splitting the $120 among the 'e' of them.

This means that number of all students is 'e'. To find the cost of present for each student, we will divide 120 by e.

\text{Cost of present for each student}=(120)/(e)

Since Liam had $250, so we need to subtract (120)/(e) from 250 to get amount Liam has left:

\text{Amount Liam has left}=250-(120)/(e)

Therefore, our required expression would be 250-(120)/(e).
Liam Splits $40 With The 3 Of Them Out Of $120 And Liam Has 130 Because 250-120=130
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