Answer:
A: 68.3
B: 95.4
C: 99.7
Step-by-step explanation:
A: within 1 sd
2(.8413) - 1
0.6826
68.26%
B: within 2sd
2(.9772) - 1
0.9544
95.44%
C: within 3sd
2(.9986) - 1
0.9972
99.72%
Answer:
Step-by-step explanation:
Let the probability of getting employed after graduated within a year be P(A)
and the probability of buying a car within a year be P(B)
Given that:
The probability of getting employed after graduated within a year = 90% = 0.9
Then; Let that be P(A)
The probability of getting employed and buying a car within a year = 72% = 0.72.
Then; Let that be P(A∩ B).
The probability that a college student will get both events is P(B/A)
![P(B/A) = \dfrac{P(A \cap B) }{P(A)}](https://tex.z-dn.net/?f=P%28B%2FA%29%20%3D%20%20%5Cdfrac%7BP%28A%20%5Ccap%20B%29%20%7D%7BP%28A%29%7D)
![P(B/A) = \dfrac{0.72}{0.90}](https://tex.z-dn.net/?f=P%28B%2FA%29%20%3D%20%20%5Cdfrac%7B0.72%7D%7B0.90%7D)
P(B/A) = 0.80
Answer:
84cm^2
Step-by-step explanation:
P=2l+2w
We are given,
P=40cm
l=2w+2
Plug these into the first formula and solve for the dimensions,
length and width, of the rectangle:
40=2(2w+2)+2w Simplify
40=4w+4+2w
40=6w+4
36=6w
6=w OR the width is 6cm, therefore,
the length is
l=2(6)+2
l=14cm
To calculate the area of a rectangle, A=lw,
plug the length,14cm, and the width, 6cm, into this formula
A=(14)(6)
A=84cm2 OR the area of the rectangle is 84cm^2
<span>x^ − 4x − 5 = (x - 5)(x+1)
answer is </span><span>(x − 5)(x + 1) (last choice)</span><span>
</span>
Answer:
70
Step-by-step explanation:
The area of one of the four triangles is
. So together the area of all the four traingles is ![4\times 17.5 = 70](https://tex.z-dn.net/?f=4%5Ctimes%2017.5%20%3D%2070)