How can you use expressions and models to determine if expressions are equivalent

Answers

Answer 1

Answer:

To check for equivalence, use properties of operations such as the Distributive Property. Two expression are said to be equivalent if they resulted in the same number after evaluation of each. You can both expand and factor expressions to generate equivalent expressions.

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What is the final price for a pair of $39.50 jeans after 5% sales tax has been added?

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the answer will be $41.45 or $41.46 i'm not sure what you answer choices are! hope this helped!

The answer is $41.46 hope this helps

James deposited $575 into a bank account that earned 5.5% simple interest each year.If no money was deposited into or withdrawn from the account, how much money was in the account after 2 1/2 years?

Round your answer to the nearest cent.

Answers

Hi there!
So first we should find what 1% of 575 is. To do that de divide it by 1 and get 5.75. Since he gets 5.5 simple interest per year, we multiply 5.75 by 5.5. We get 31.625. This asks how much after 2 1/2 years, so lets multiply 31.625 by 2.5 and get 79.0625. Then add that amount to 575 and end out with 654.0625. But this question asks us to round to the nearest cent, and after rounding we have 654.06. So, after 2 1/2. years he has $654.06! Hope this helps.

Answer:

654.06

Step-by-step explanation: I took the quiz.

What is the least common multiple of 18,20 and 24?

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The least common multiple of 18, 20, and 24 is 360.

The least common multiple for 18, 20, and 24 is 360

Evaluate the expression
-112/7+9

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-112/7+63/7 = -49/7 = -7

In a bag containing black and white marbles, 3/8 of the marbles are black.Which could be the numbers of black and white marbles in the bag?

A.
3 black and 8 white

B.
12 black and 20 white

C.
20 black and 12 white

D.
8 black and 3 white

Answers

the answer is b hope im rite

the correct answer is b he is right
:)

The soccer team is selling keys chains to raise money for the team. They ordered 100 key chains that cost $0.25 each. There is a flat shipping rate of $8. The team sells the key chains for $2 each. Write an algebraic inequality to find the fewest number of key chains,k, the team must sell to make the profit. What is the fewest number of key chains the team must sell to make a profit? Show your work and explain your thinking.

Answers

The formula to get the correct answer to question is this:

1.) To get the total cost of goods bought:
((100 key chains) x ($0.25 purchasing cost)) + ($8 shipping rate) = $33
Which means each key chain essentially costs $0.33 each
2.) To get the number of units they should sell to make profit:
Breakeven = Costs/Price meaning $33/$2 = 16.5
They should sell 16.5 units to make a profit.

Answer: