MATHEMATICS MIDDLE SCHOOL

Which is the correct operation to use to solve this problem? The library has a total of 542 shelves. The average number of books on each shelf is 34. How many books does the library have if all the books are on the shelves? Enter M for multiplication or D for division.

Answers

Answer 1

Answer: M, You multiply the number of books per shelf times the number of shelves total

Answer 2

Answer:

it is M

Step-by-step explanation:

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Charles Lindbergh made a first solo airplane flight from New York to Paris. His flight covered about 3610 miles in 33.5 hours.a.) find the unit rate in miles per hourb.) find the unit rate in hours per milec.) which is a better description of Lindbergh's rate about 2 miles per minute or about 2 mph? Explain your reasoning.
The length of a rectangle is 8 mm longer than its width. Its perimeter is more than 32 mm. Let w equal the width of the rectangle. a. Write an expression for the length in terms of the width. b. Use expressions for the length and width to write an inequality for the perimeter, on the basis of the given information. c. Solve the inequality, clearly indicating the width of the rectangle.
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A patient was supposed to take 560mg of Medicine but only took 420mg. What percent of medicine did the patient take

Answers

75% because u do 420 times 100 divide it by 560 and that=75%

About 60.7% of eligible voters voted in the election. What decimal is equivalent to 60.7%?

Answers

.607 you do 60.7/100 to convert percent to decimal

A carpenter has several boards of equal length. He cuts 3/5 of each board. After cutting the boards, the carpenter notices that he has enough pieces left over to make up the same length as 4 of the original boards. How many boards did the carpenter start with?

Answers

4 of the original boards have a summed length of 20 units. 5 x 4 = 20.
Since 2/5 is left from each board, you simply add them until the 2's add to 20.

So, 2 x 10 = 20. Hence, there are 10 2/5 boards.

That's just 4 of the boards that the 2/5 make up, but that should also mean that there are 10 3/5 boards as well.

30/5 + 20/5 = 50/5
Reduction = 10

The carpenter started with 10 5/5 boards.
:D

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:

The need to sell 17 key chains to make profits.

Step-by-step explanation:

Each key costs $0.25. They oreders 100 key chains.
The spent $8 on shipping.
They sold the key chaind for $2 each.

According to the given information, the team invested

$0.25(100)=25$ , that is, $25 on key chains.

With the shipping, $25+8=33$ .

So, the invested 33$. That means they need to sell in order to have an income greater than $33 to make profits, that's the condition.

Therefore, this situation can be modeled as

$2x>33$

In words, the sell $2 per key chain must obtaine more than $33.

Then, we solve for $x$

$x>(33)/(2)= 16.5$

So, the need to sell 17 key chains to make profits. Notice, if they sell 16 they would make $32, which is under the condition to make profits.

Which is true about the degree of the sum and difference of the polynomials 3xy - 2xy4 - 7xy and -8xy + 2x°y4 + xy?O Both the sum and difference have a degree of 6.
O Both the sum and difference have a degree of 7.
The sum has a degree of 6, but the difference has a degree of 7.
The sum has a degree of 7, but the difference has a degree of 6.