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IgorLugansk [536]
2 years ago
6

Why is it easier to add fractions when the denominators are the same?​

Mathematics
1 answer:
kolezko [41]2 years ago
7 0

Answer:

so you wont have to find the LCD (least common denomonatoir )

Step-by-step explanation:

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PLEASE ANSWER FAAST!! A car wheel has a diameter of 20.8 inches. About how far does the car travel in 5 rotations?
SCORPION-xisa [38]

Answer:

65.312 inches

326.56 inches

1959.36 inches

Step-by-step explanation:

Given

d = 20.8 inches

To find

Travel in 1, 5, 30 rotations

Solution

Circumference of the wheel is equal to one full rotation

C = πd = 3.14*20.8 = 65.312 inches

5C = 5*65.312 = 326.56 inches

30C = 30*65.312 = 1959.36 inches

Step-by-step explanation:

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2 years ago
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Alexus [3.1K]

Answer:

I'm pretty sure it is 21

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3 years ago
a father and his son clean the house together in 2 hours. when the son works alone, it takes him an hour longer to clean than it
Marizza181 [45]
It takes the son one and half hours to clean the house. To find this you need the equations F+S=2 and F+1=S. (F=father and S=son) You take the F+1 and substitute it in for S in F+S to get F+(F+1)=2. Then you combined like factors, 2F+1=2, and simplify to get F=.5hr. After this you plug .5 in to F+1=S to get (.5)+1=S, meaning it takes the son 1.5 hour to clean the house. 
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3 years ago
15% of $9 is $ this is a question on my math worksheet please respond quick and show the steps on how to do it please and thank
Vladimir79 [104]
9 times .15 = 1.35
15% of $9 is $1.35
5 0
3 years ago
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How do I do place value with whole numbers
mario62 [17]

Short answer: the same way you do it with any other kind of numbers.

"Place value" means the value of a number comes from where it is (its place) in relation to the decimal point. The digit immediately to the left of the decimal point is the units digit, so tells you the number of units represented.

Each digit to the left of the units digit has a place value that is 10 times that of the digit to its right. Each digit to the right of the units digit (hence to the right of the decimal point) has a place value that is 1/10 that of the digit to its left.

The places have names (see attached).

_____

You can find the place value of a digit by setting all the other digits in the number to zero. For example, the place value of 2 in the number 324 is 020, or 20.

5 0
3 years ago
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