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IRINA_888 [86]
3 years ago
11

If the measure of a central angle is 28°, then to find the measure of its arc, you would need to do which of the following?

Mathematics
2 answers:
MaRussiya [10]3 years ago
5 0

It is A. nothing, They are Equal


YW, have a nice day.

suter [353]3 years ago
3 0

Answer:

a

Step-by-step explanation:

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Let x ∼ bin(9, 0.4). find
Kobotan [32]
A.
\mathbb P(X>6)=\mathbb P(X=7)+\mathbb P(X=8)+\mathbb P(X=9)
=\dbinom97(0.4)^7(1-0.4)^{9-7}+\dbinom98(0.4)^8(1-0.4)^{9-8}+\dbinom99(0.4)^9(1-0.4)^{9-9}
\approx0.025

b.
\mathbb P(X\ge2)=1-\mathbb P(X
=1-\dbinom90(0.4)^0(1-0.4)^{9-0}-\dbinom91(0.4)^1(1-0.4)^{9-1}
\approx0.929

c.
\mathbb P(2\le X
=\dbinom92(0.4)^2(1-0.4)^{9-2}+\dbinom93(0.4)^3(1-0.4)^{9-3}+\dbinom94(0.4)^4(1-0.4)^{9-4}
\approx0.663

d.
\mathbb P(2
=\dbinom93(0.4)^3(1-0.4)^{9-3}+\dbinom94(0.4)^4(1-0.4)^{9-4}+\dbinom95(0.4)^5(1-0.4)^{9-5}
\approx0.669

e.
\mathbb P(X=0)=\dbinom90(0.4)^0(1-0.4)^{9-0}\approx0.01

f.
\mathbb P(X=7)=\dbinom97(0.4)^7(1-0.4)^{9-7}\approx0.021

g, h.
For X\sim\mathcal B(n,p), recall that \mathbb 
E[X]=\mu_X=np and \mathbb V[X]={\sigma_X}^2=np(1-p). So

\mu_X=9(0.4)=3.6
{\sigma_X}^2=9(0.4)(0.6)=2.16
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3 years ago
Yolanda and yoko ran in a 100-yd dash. when yolanda crossed the finish line, yoko was 10 yd behind her. the girls then repeaed t
aksik [14]
Yolanda won, she won by 1 yard
I hope this helps.
YOU'RE WELCOME :D
3 0
3 years ago
Why do we call a decimal a decimal
olga2289 [7]
Well we call that a decimal which looks like this:   .
A decimal point is to separate or decrease a number by a certain value.
Hope this helped!   :)
6 0
3 years ago
Michele wanted to measure the height of her school’s flagpole. She placed a mirror on the ground 48 feet from the flagpole, then
yulyashka [42]
Height of the flagpole = x
distance from flagpole to the mirror = 48 ft
height of Michele = 5 ft
distance from Michele to the mirror = 12 ft

Now, set the proportion.

x/48 = 5/12
48 * x/48 = 5/12 * 48
x = 240/12
x = 20

So, the height of the flagpole is 20 ft.

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3 years ago
You and your friend are buying throw blankets with your names embroidered on them.The cost of the throw blanket is x dollars and
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The cost of the blanket is $20
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