[ Answer ]
![\boxed{\bold{X \ = \ 20}}](https://tex.z-dn.net/?f=%5Cboxed%7B%5Cbold%7BX%20%5C%20%3D%20%5C%2020%7D%7D)
[ Explanation ]
--------------------------
- 4 = 6
- 4 + 4 = 6 + 4
= 10
= 10 · 2
X = 20
![\boxed{\bold{[] \ Eclipsed \ []}}](https://tex.z-dn.net/?f=%5Cboxed%7B%5Cbold%7B%5B%5D%20%5C%20Eclipsed%20%5C%20%5B%5D%7D%7D)
Answer:
0.28
Step-by-step explanation:
If the probability that the student does take statistics is 0.72, then it must mean that the rest of the students will not take statistics.
1 - 0.72 = 0.28
0.28 will be the probability that the student does not take statistics.
Answer:
It's about 3 feet
Step-by-step explanation:
Answer:
y = 4
x= 7
Step-by-step explanation:
First you would rearrange the first equation x-7y=-21 and make x the subject:
x= -21 +7y
Then substitute x into the 2nd equation to find y:
13x - 7y= 63
13(-21+7y) - 7y = 63
-273 + 91y -7y = 63
-273 + 84y=63
84y = 63 + 273
84y = 336
y = 4
Once you have y you can substitute this into any of the original equations to find x, for example:
x - 7y = -21
x - 7(4) = -21
x - 28 = -21
x = -21 +28
x= 7
Answer:
A) 2
Step-by-step explanation:
It shows it in the formula.