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Ber [7]
3 years ago
14

Lcm and gcf of 8 and 18

Mathematics
2 answers:
olga nikolaevna [1]3 years ago
6 0
The gcf of 8 & 18 is 2 because no other number can go into both except 2

the lcm is 72 because thats the lowest number that both of them can be multiplied to get
Vlad [161]3 years ago
4 0

Step-by-step explanation: To find the least common multiple or (lcm) of 8 and 18, begin by listing the multiples of each number.

<u>Multiples of 8</u>

1 × 8 = 8

2 × 8 = 16

3 × 8 = 24

4 × 8 = 32

5 × 8 = 40

6 × 8 = 48

7 × 8 = 56

8 × 8 = 64

9 × 8 = 72

Notice that we did not list 0 × 8 in our list of multiples and that's because 0 multiplied by 8 is 0 and 0 cannot be our least common multiple.

Now, let's list the multiples of 18. When listing the multiples of 18, it's a good idea to keep an eye on the list of multiples for 8 so that we will notice when we find a least common multiple.

<u>Multiples of 18</u>

1 × 18 = 18

2 × 18 = 36

3 × 18 = 54

4 × 18 = 72

Now, we can stop here because we found the least common multiple of 8 and 18 which is 72.

Greatest common factor is provided in the image attached.

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Answer: One cup is same as 3/3 cups. 4 cups is same as 4*(3/3) cups thats 12/3 cups. Then you can conclude that if you have 2/3 cups, you will need 6 of them to get 4 cups.

Step-by-step explanation:

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8 0
3 years ago
A. (-10,-10)<br> B. (-1 /12, 9 1/2) <br> C. (1/2, 4) <br> D. (1,8)
lara31 [8.8K]

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5 0
2 years ago
A train travels train travels 288 kilometre at a uniform speed. If the speed had been 4 kilometre per hour more it would have ta
kiruha [24]

Answer:

Let the speed of the train be x km/h.

Case 1:

Distance = 288 km

Speed = x km/h

Time = Distance/Speed

= 288/x h

Case 2:

Distance = 288 km

Speed = (x+4) km/h

Time = 288/x + 4 h

Since 288/x > 288/x + 4

288/x - 288/x+4 = 1

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[ x + 4 - x / x(x + 4) ] = 1/288

[4 / x^2 + 4x ] = 1/288

x^2 + 4x = 1152

x^2 + 4x - 1152 = 0

x^2 + 36x - 32x - 1152 = 0

x(x + 36) - 32(x + 36) = 0

(x + 36)(x - 32) = 0

x + 36 = 0 , x - 32 = 0

x = -36 , x = 32

x = -36 , rejected since speed cannot be negative.

Therefore , speed of the train = 32 km/h

4 0
3 years ago
What is the quotient of 2x^3 +3x^2+5x-4 divided by x^2 + x+ 1
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Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
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