When do i find the LCM and when do i find the Gcf

Answers

Answer 1

Answer: for the lcm u should make a list for gcf you should do a factor tree

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John purchased 1/4 lbs of hamburger for $0.75. How much did the hamburger cost per pound?

Answers

A 1/4 lbs burger is 1 part of 4. It cost 0.75. Take 4 parts times .75 and the anwer is 3.00

Answer:

3.00

Step-by-step explanation:

(=u.u=)0'

Which graph represents the solution set for –4(1 – x) ≤ –12 + 2x?

Answers

$-4(1-x)\leq-12+2x\qquad\text{use distributive property}\n\n(-4)(1)+(-4)(-x)\leq-12+2x\n\n-4+4x\leq-12+2x\qquad\text{add 4 to both sides}\n\n4x\leq-8+2x\qquad\text{subtract 2x from both sides}\n\n2x\leq-8\qquad\text{divide both sides by 2}\n\n\boxed{x\leq-4}$

What fraction is equivalent to 7.25?

Answers

The fraction equivalent to 7.25 is 7 and 25/100

The decimal .25 could be written as $(1)/(4)$ . So a fraction equivalent to 7.25 would be 7 $(1)/(4)$ .

If you want a mixed fraction, multiply 7 with the denominator and add it to the numerator. Then divide the new value by the denominator.
So 7 $*$ 4 = 28.
28 + 1 = 25.
$(25)/(4)$ .

The answer is $(25)/(4)$ .

What type of reaction is depicted by this equation? 2C4H10(g) + 13O¿(g) d 8CO¿(g) + 10H¿O(g)

Answers

I believe it's a Combustion.

Answer:

In this reaction, organic compound reacts with oxygen to yield carbon dioxide and water. Therefore, it is a combustion reaction.

Step-by-step explanation:

A ratio compares two values using which operation

Answers

A ratio compares two values using the operation division. It is a relationship between two numbers indicating how many times the first number contains the second. Hope this answers the question. Have a nice day. Feel free to ask more questions.

Carly has spent $15 of her $25 allowance, what percent of her allowance did she spend?

Answers

All you have to do is subtract 15 from 25 and divide that to get the percentage:

25-15 = 10

10/25 = 40%

10%? Im not sure if this is the right answer

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