MATHEMATICS MIDDLE SCHOOL

Which expression is NOT equivalent to 5x ?3x+2x

3x+2

7x+5−2x−5

(7x+5)−(2x+5)

Answers

Answer 1
Answer:

Answer:

3x+2

Step-by-step explanation:

3x+2x  = 5x

3x+2   = 3x+2   this is not equal to 5x

7x+5−2x−5  = 5z +0 = 5x

(7x+5)−(2x+5) = 7x+5 -2x-5 = 5x +0 = 5
Answer 2
Answer:

3x+2 isnt a expression of 5x

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Answers

1 way: 2 quarters and 7 pennies

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Round 81.139 to the nearest tenth

Answers

81.1 because the hundreth digit doesnt surpass the 5 or over rule which causes it to go up.
81.139 rounded to the nearest tenth would be 81.1 because it doesn't go over 5 so therefore it stays as 81.1

Dao has 2 3/8 pounds of hamburger meat. He is making 1/4 -pound hamburgers. Does Dao have enough meat to make 10 hamburgers? Explain.

Answers

To find if there is enough, here is the equation
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Josh has $25 and he wants to buy some movies. He picks one movie that costs $9.99 and two that cost $5.99 each. Which statement best describes if an exact total or an approximate total should be calculated?

A.
Josh must add the exact cost of the 3 movies so he will know if he has enough money to buy the third movie.

B.
Josh can round the prices of the movies to the nearest dollar and then add to estimate if he has enough money.

Answers

he should add exact since money is involved
he could also estimate since they are so close together, but he would be off only 2 cents

A
B. Josh can round the prices of the movie to the nearest dollar and then add to estimate if he has enough money
This is because whether he rounds it or not, there will only be a 2 cent gap. Rounding will just make it easier to add and subtract. Hope it helps:)

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Answers

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