Multiples of 7 up to 49:
7
14
21
28
35
42
49
Therefore, multiple of 7 occurs seven times.
There are 43 cards altogether.
Therefore, P(multiple of seven)= 7/43
Knowledge point: probability
Hello,
Step-by-step explanation:
90 = 9 x 10 = (7 + 2) x 10 = 70 + 20
70 men and 20 women
56 = 20 + X ⇔ X = 36
Answer : + 36 women
Answer:
5y = 5
Step-by-step explanation:
When the second equation is multiplied by -2, it becomes ...
-2(x -2y) = -2(-1)
-2x +4y = 2
Adding this to the first equation gives ...
(2x +y) +(-2x +4y) = (3) +(2)
2x +y -2x +4y = 5 . . . . . . . . . eliminate parentheses
5y = 5 . . . . . . . . . . . . . . . . . . .collect terms
Answer:
54
Step-by-step explanation:
4^3-4/2*5
4^3=64
64-4/2*5
-4/2=-2
64-2*5
-2*5=-10
64-10=54
Parenthesis
Exponent
Multiply or Divide (whichever comes first)
Add or Subtract (whichever comes first)
Hope this helps
Answer:
t = 3.5 sec
Step-by-step explanation:
The equation that represents the position of the ball as a function of time is the following:
Where:
= Initial position of the ball (4 feet tall)
= Initial speed of the ball (55feet / s)
a = acceleration (9.8 , or in this case 32.16)
t = time in seconds
Then we want to know how long it takes to get to the ground, for this we equal h (t) = 0 and clear t.
So:
Solving the second degree equation we have:
t = -0.071 sec
t = 3.5 sec
We must take the positive solution.
So:
t = 3.5 sec