3 years ago

What is the greatest common factor of 12, 40 and 68

Mathematics

1 answer:

Gennadij [26K]3 years ago

3 0

Answer:

4 is the greatest

Step-by-step explanation:

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Sergio [31]

Make denomenators the same
common denom is 2n²

multiply 3/2n by n/n
mulitply 1/n² by 2/2

we get
$\frac{3n}{2n^2}+\frac{2}{2n^2}=\frac{n-2}{2n^2}$
combine fractions
$\frac{3n+2}{2n^2}=\frac{n-2}{2n^2}$
multiply both sides by 2n²
2n+2=n-2
minus n both sides
n+2=-2
minus 2 both sides
n=-4

8 0

3 years ago

Tyree and four friends go to the movies.Each person buys a movie ticket for $7,a snack for $5,and a drink for $2. Write an expre

Olegator [25]

7 + 5 + 2 = 14 because seven plus five is twelve, twelve plus two is fourteen.

7 0

3 years ago

Read 2 more answers

The probability that an archer hits the target when it is windy is 0.4; when it is not windy, her probability of hitting the tar

stiks02 [169]

Answer:

x = 6

Step-by-step explanation:

The probability that this archer hits her first shot is given by t the probability of being windy and that she hits the shot added to the probability of not being windy and that she hits the shot:

$P(H_{first}) = P(H_w)*P(W)+P(H_{nw})*(1-P(W))\\P(H_{first})=0.4*0.3+0.7*(1-0.3)\\P(H_{first})=0.12+0.49 = 0.61$