Answer:
10
30%
Step-by-step explanation:
In this case it would be the combination of 2 taken from 5.
That is, when n = 5 and r = 2
nCr = n! / r! * (n-r)!
replacing
5C2 = 5! / (2! * 3!)
5C2 = 10
Which means that the sample space is 10 possible combinations.
the probability that the card you draw is even is 3/5, since there are 3 even cards that exist and 5 is the total number of cards.
Now, so that both are for it would be the multiplication of the previous probability and 2/4 because an even card and a card in general have already been drawn:
(3/5) * (2/4) = 0.3
So the probability that both are even is 30%
Answer:
D. 7x - 6 = x + 6(x + 5)
Step-by-step explanation:
a equation will have no solution if the final value is not real or not equal
D) 7x - 6 = x + 6(x + 5)
7x-6 = x+6x+30
7x-x-6x-6-30= 0
-36≠0
so -36 ≠ 0 ... so no solution
A. 9x + 9 = 11x – 2x + 9
9x-11x+2x+9-9=0
0=0
have solution, Real, true
B. 7x + 30 = x + 6(x + 5)
7x+30 = x+6x+30
7x-x-6x+30-30= 0
0=0
have solution, Real, true
C. -5x + 9 = 2x + 9 - 7x
-5x-2x+7x+9-9= 0
-7x+7x=0
0=0
have solution, Real, true
Answer:
what
Step-by-step explanation:
Answer:
x = 10.3 in
Step-by-step explanation:
To find the value of a, use the area formula for a triangle. The formula is A = 1/2 *b*h. Here b = x and h= x. The formula becomes A = 1/2 *x². Substitute A = 53 and solve for x by using inverse operations.
A = 1/2x²
53 = 1/2x²
106 = x²
√106 = x
10.3 = x
