Answer:
72
Step-by-step explanation:
SA Formula = 2(L x W) + 2(L x H) + 2(W x H)
2(6x2) + 2(6x3) + 2(2x3)
2(12) + 2(18) + 2(6)
24 + 36 + 12
The answer would be 72 ft sqaured
Answer:
It's a.
Step-by-step explanation:
15s*3+180=225
30s*3+180=270
60s*3+180=360
30s*3+180=270
It can be called an acute triangle, an isosceles triangle, or equiangular triangle (equilateral triangle)
Answer:
The probability that there will be repair exactly 3 toaster is 0.0574.
Step-by-step explanation:
Binomial Distribution:
A discrete random variable X having the set {0,1,2,3......,n} as the spectrum, is said have a binomial distribution with parameter n= number of trials and p=probability of number of success on an individual trial, if the p.m.f (probability mass function) of X given by,
x=0,1,2,......,n
=0 elsewhere
where 0<p<1 and n is a positive integer.
Total number of toaster in cartons(n) = 10.
Probability of number of success on an individual trial p= 10% = 0.10
![\therefore P(X=3)= C(10,3)(0.10)^3(1-0.10)^{10-3}](https://tex.z-dn.net/?f=%5Ctherefore%20P%28X%3D3%29%3D%20C%2810%2C3%29%280.10%29%5E3%281-0.10%29%5E%7B10-3%7D)
![=\frac{10!}{3!(10-3)!}(0.10)^3)(0.90)^7](https://tex.z-dn.net/?f=%3D%5Cfrac%7B10%21%7D%7B3%21%2810-3%29%21%7D%280.10%29%5E3%29%280.90%29%5E7)
=0.0574
The probability that there will be repair exactly 3 toaster is 0.0574.
First you must have the quadratic equal to zero. In order to do this you must subtract 7 to both sides
x^2 + 20x + (100 - 7) = 7 - 7
x^2 + 20x + 93 = 0
Now you must find two numbers who's sum equals 20 and their multiplication equal 93
Are there any? NO!
This means that you have to use the formula:
![\frac{-b±\sqrt{b^{2} - 4ac} }{2a}](https://tex.z-dn.net/?f=%5Cfrac%7B-b%C2%B1%5Csqrt%7Bb%5E%7B2%7D%20-%204ac%7D%20%7D%7B2a%7D)
In this case:
a = 1
b = 20
c = 93
![\frac{-(20) plus/minus\sqrt{20^{2} - 4(1)(93)} }{2*1}](https://tex.z-dn.net/?f=%5Cfrac%7B-%2820%29%20plus%2Fminus%5Csqrt%7B20%5E%7B2%7D%20-%204%281%29%2893%29%7D%20%7D%7B2%2A1%7D)
![\frac{-20 plus/minus\sqrt{400 - 372} }{2}](https://tex.z-dn.net/?f=%5Cfrac%7B-20%20plus%2Fminus%5Csqrt%7B400%20-%20372%7D%20%7D%7B2%7D)
![\frac{-20 plus/minus\sqrt{28} }{2}](https://tex.z-dn.net/?f=%5Cfrac%7B-20%20plus%2Fminus%5Csqrt%7B28%7D%20%7D%7B2%7D)
^^^We must simplify √28
√28 = 2√7
so...
![\frac{-20 plus/minus 2\sqrt{7} }{2}](https://tex.z-dn.net/?f=%5Cfrac%7B-20%20plus%2Fminus%202%5Csqrt%7B7%7D%20%7D%7B2%7D)
simplify further:
![-10 plus/minus\sqrt{7](https://tex.z-dn.net/?f=-10%20plus%2Fminus%5Csqrt%7B7)
-10 + √7
or
-10 - √7
***plus/minus = ±
Hope this helped!
~Just a girl in love with Shawn Mendes