Answer:
-45/7
Step-by-step explanation:
1. make -7 into fraction form. -7/1
2. find a common denominator. there isn't one, so just use 7. multiply -7/1 x 7/7.
3. you should get -49/7. add 4/7 to it and you get -45/7
There are 4 aces in a standard 52 card deck. So the probability of getting an ace on the first try is 4/52, or 1/13 (simplified). The probability of getting it the second time after you pulled one out is 3/51 because you removed one, or 1/17 (simplified). The probability of NOT getting a ace on the third go is 48/50, because there are 50 remaining cards and 2 of them remain to be aces. Simplified probability of not getting it is 24/25. Multiply these probabilities together to find the exact probability of getting exactly two aces.
1/13 * 1/17 * 24/25 = 24/5525 or 0.0043438914027149.
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Answer:
D) 14 seconds
Step-by-step explanation:
First we will plug 500 in for y:
500 = -4.9t² + 120t
We want to set this equal to 0 in order to solve it; to do this, subtract 500 from each side:
500-500 = -4.9t² + 120t - 500
0 = -4.9t²+120t-500
Our values for a, b and c are:
a = -4.9; b = 120; c = -500
We will use the quadratic formula to solve this. This will give us the two times that the object is at exactly 500 meters. The difference between these two times will tell us when the object is at or above 500 meters.
The quadratic formula is:
Using our values for a, b and c,
The two times the object is at exactly 500 meters above the ground are at 5 seconds and 19 seconds. This means the amount of time it is at or above 500 meters is
19-5 = 14 seconds.
There are infinite many planes that contain each line and point
<h3>How to determine the number of planes?</h3>
The given parameters are given as:
- Line KL and G
- Line JI and G
As a general rule, a line and a point can be used to draw as many planes as possible
This means that there are infinite many planes possible
Hence, there are infinite many planes that contain each line and point
Read more about planes and points at:
brainly.com/question/14366932
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Answer:
175????
Step-by-step explanation: