MATHEMATICS HIGH SCHOOL

Which term describes a fraction that has a variable or variable expression in its numerator, its denominator, or both?A. Variable fraction
B. Rational expression
C. Rational fraction
D. Variable expression

Answers

Answer 1
Answer: The right answers is B. Rational expression.

This is true given that the statement establishes a term that describes a fraction that has a variable or variable expressionin its numerator, denominator or both, that is, this is the concept of the quotient of two polynomials called rational expression. Finally, we can get the following rational expressions that matches with this concept, namely:

(1) \ (1)/(x) \n \n (2) \ (2x-1)/(x+1) \n \n (3) \ (x^(2)-1)/(x^(2)+1)
Answer 2
Answer: Rational expression

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Here is a problem from way back from my bro's math (elementary)3 cats eat 3 cats in 3 minutes
how long does it take for 100 cats to eat 100 fish?

show all work




(hint: answer is not 100 minutes, and if you answer 100 minutes you are wrong and will be reported)

Answers

3 cats -------------- 3  fish -------------3 minutes
100 cats------------100 fish -----------  x

The cats and fish are variables directly proportional, the cats and the time are varibles inversely proportional,
Therefore, 

3 cats * 100 fish * x=100 cats * 3 fish * 3 minutes
x=(100 cats * 3 fish * 3 minutes) / (3 cats * 100 fish)
x=3 minutes.

Answer: the time will be 3 minutes. 

What is the fractional equivalent of 225%?

Answers

It is 2 1/4 , you have 200% which is equivalent to 2 and 25% which is one quarter of 100%
You would start out by putting 225 over 100 then simplifying from there. You would end up getting 9/4. As a mixed number that would be 2 and 1/4.

PLEASE HELP! I DONT UNDERSTAND! 98 POINTS! AND I ALREADY HAVE THE GRAPH!!! A FedEx freight truck carries three tons of packages 660 miles on 90 gallons of diesel fuel from Miami, FL to Atlanta, GA. FedEx makes a graph to represent the miles per gallon the truck uses.What is the domain in this situation? explain you answer.

What does the origin of the graph represent in this situation? explain your answer

Answers

Answer:

See below

Step-by-step explanation:

Domain

The domain is the x value. They go alphabetically.

domain = x value

range = y value.

The domain for this situation is 0 to 90 gallons

domain: 0  ≤  x  ≤  90. The domain is between 0 and 90.

As the truck moves, each gallon of gas on the x axis moves it closer to it's destination 660 miles away  (Atlanta Ga)

The slope of the graph is the rate of gas consumption. slope = miles / gallons.

slope = 660 / 90

slope = 7.33 miles per gallon. You are not asked for this but it might help you understand what the domain represents. Every gallon used in the domain allows you to travel another 7.33 miles.

Origin

The origin is (0,0). It means that the Fedex truck has not moved at all when the trip began. It has gone 0 miles and used 0 gallons of diesel fuel.

If you divide 660 by 90, we see that the unit rate for this graph is 7.333 repeating, or 7 1/3. So it shows the unit rate.

The domain is anything that can be divided by 7 1/3.

The origin of the graph represents the coordinates for every other point on the graph.

Josh went to a local barber to get his haircut. It cost $18 for the haircut. Josh tipped the barber 15%. What was the total cost of the haircut including tip?

Answers

$20.70

Step-by-step explanation:

15% of 18 is 2.7 so 18 + 2.7 = 20.70

If a roof's slope is 0.5, how high will the roof rise over a 17-foot run?a). 8 1/2 feet
b). 17feet
c). 1/34 feet
d). 34 feet

Answers

The answer to the mathematics question presented above would be letter a) 8 and 1/2 feet. If a roof's slope is 0.5, the height of the rise of the roof over a 17 foot run would be 8 and 1/2 feet. I got this answer through multiplying the slope and the run to get the rise. 
Answer a) 8 and half feet.

You calculate it in this way

slope = rise / run ⇒ rise = slope * run = 0.5 * 17 feet = 8.5 feet.

7. On Monday 2∕3
of the team practiced, Tuesday 7
∕8
, Wednesday 1
∕2
, and Thursday 3
∕4
. On which day
were the most team members present at practice?
A. Thursday
B. Wednesday
C. Tuesday
D. Monday

Answers

The  day where the most team members were present at practice is:

Option C: Tuesday

How to find the greatest fraction?

There are different types of fractions such as:

Proper fraction

Mixed fraction

Improper fraction

We are given the fractions to represent the fraction of team members that practiced

Monday = 2/3 = 0.667

Tuesday = 7/8 = 0.875
Wednesday = 1/2 = 0.5

Thursday = 3/4 = 0.75

The greatest fraction here is 7/8 which falls on Tuesday.

The  day where the most team members were present at practice is:

Option C: Tuesday

Read more about Greatest Fraction at: brainly.com/question/3175225

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Well, 2/3 is .66%, 1/2 is .5%, 3/4 is .75%, and 7/8 is .875%. that being said, 7/8 is closest to one, so it is the largest fraction which would mean your answer is c.) Tuesday.
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