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Colt1911 [192]
2 years ago
15

What is 69.15 rounded to the nearest hundredth

Mathematics
1 answer:
Nookie1986 [14]2 years ago
6 0

Answer:

<h3>69.15 </h3>

Step-by-step explanation:

69.15 rounded off to the nearest hundredth is 69.15...

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The height of a right cylinder is 3 times the radius of the base. The volume of the cylinder is 243 cubic units.
Olin [163]

Answer: C 6 units

Step-by-step explanation: Edg

8 0
2 years ago
Suppose that X is a random variable with mean 30 and standard deviation 4. Also suppose that Y is a random variable with mean 50
Vladimir79 [104]

Answer:

a) Var[z] = 1600

    D[z] = 40

b) Var[z] = 2304

    D[z] = 48

c) Var[z] = 80

    D[z] = 8.94

d) Var[z] = 80

    D[z] = 8.94

e) Var[z] = 320

    D[z] = 17.88

Step-by-step explanation:

In general

V([x+y] = V[x] + V[y] +2Cov[xy]

how in this problem Cov[XY] = 0, then

V[x+y] = V[x] + V[y]

Also we must use this properti of the variance  

V[ax+b] = a^{2}V[x]

and remember that

standard desviation = \sqrt{Var[x]}

a) z = 35-10x

   Var[z] = 10^{2} Var[x] = 100*16 = 1600

   D[z] = \sqrt{1600} = 40

b) z = 12x -5

   Var[z] = 12^{2} Var[x] = 144*16 = 2304

   D[z] = \sqrt{2304} = 48

c) z = x + y

   Var[z] =  Var[x+y] = Var[x] + Var[y] = 16 + 64 = 80

   D[z] = \sqrt{80} = 8.94  

d) z = x - y

   Var[z] =  Var[x-y] = Var[x] + Var[y] = 16 + 64 = 80

   D[z] = \sqrt{80} = 8.94

e) z = -2x + 2y

   Var[z] = 4Var[x] + 4Var[y] = 4*16 + 4*64 = 320

  D[z] = \sqrt{320} = 17.88

   

7 0
3 years ago
Which expressions are equivalent to − f − 5 ( 2 f − 3)
Drupady [299]

Answer:

I need the expressions

Step-by-step explanation:

(I don't have the experresions but I think it might be helpful to simplify)

- f - 5 ( 2 f - 3)

−f−10f+15

−f−(10f−15)

(−f−10f)+15

<u>−11f+15 </u>

<u />

<u>Hope this helped</u>

3 0
2 years ago
The sum of two numbers is 31.5. The difference is 5.25. Find the numbers
ANTONII [103]
X+y=31.5
x-y=5.25

add 2 equations
x+y+x-y=31.5+5.25
2x=36.75
x=18.375
y=31.5-18.375=13.125
check : 18.375+13.125=31.5, 
18.375-13.125=5.25 
so
Answer:
18.375 and 13.125

8 0
3 years ago
Read 2 more answers
. ∆ABC ~ ∆DEF. Since the triangles are similar, the ratio of AB/DE must be the same as the ratio of ?/DF. What segment complete
givi [52]

Answer:

AC

Step-by-step explanation:

∆ABC ~ ∆DEF

AB/DE

∆ABC ~ ∆DEF

AC/DF

Answer: AC

5 0
3 years ago
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