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3 years ago

What subsets are of 64

Mathematics

1 answer:

scoundrel [369]3 years ago

3 0

(), (64)
i think that these are the subsets but im not completely sure

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If angle 2 has a measurement of (x+4) and angle 3 has a measurement of 3x what does x equal?

deff fn [24]

Answer:

x = 44 degrees.

Step-by-step explanation:

Hi!

Since m<2 and m<3 equal 180 degrees (sum of flat line), we can form an equation

(x+4) + (3x) = 180

x + 4 + 3x = 180

4x + 4 = 180

4x = 176

Divide by 4 on both sides

x = 44 degrees

Let me know if you have any questions

6 0

3 years ago

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

$\mu_X=9(0.4)=3.6$
${\sigma_X}^2=9(0.4)(0.6)=2.16$

6 0

3 years ago

Reflect the given triangle over the y-axis. 3 6 31 -3 3 3

dedylja [7]

Answer:(-3,6)(-31,-3)(-3,3)

Step-by-step explanation:

4 0

3 years ago

How many sides does a polygon have if each of its interior angle is 120

vesna_86 [32]

There are six sides

8 0

3 years ago

Find the area of a triangle whose sides are 3cm,6cm and 7cm

nadya68 [22]

Answer:

See below

Step-by-step explanation:

It is NOT a RIGHT triangle so you cannot use 1/2 b * h

but you can use Heron's Formula

Area = sqrt( s (s-a)(s-b)(s-c) )

s = semi- perimeter = (3+6+7)/2 = 8

Area = sqrt ( 8 ( 8-3)(8-6)(8-7) ) = sqrt ( 80) = 8.9 cm^2

4 0

1 year ago