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3 years ago

V=3.14(r)^2h solve for r

Mathematics

2 answers:

sveticcg [70]3 years ago

6 0

Assuming the h is not in the exponent, R would equal The square root of V over 3.14h

polet [3.4K]3 years ago

6 0

R= \sqrt{x} v · $\sqrt{v} 
_______
3.14 h$

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5x555x666x7777x88888

Papessa [141]

Answer: multiply

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

Can you please help with this

sleet_krkn [62]

Answer:

Exercise 1 : a. 4 ; b. -4

Exercise 2 : a. +7 positive/right ; b. -7 ; c. -7 negative/left

Step-by-step explanation:

8 0

3 years ago

Given a population mean of 53.7 with a standard deviation of 1.3 and a sample size

a_sh-v [17]

Answer: A. 0.4899 B. 14

Step-by-step explanation:

If X = random variable

then, the standard deviation of the sampling distribution of X = $\dfrac{\sigma}{\sqrt{n}}$

GIven: $\sigma= 1.2, \n= 6$

The standard deviation of the sampling distribution of X = $\dfrac{1.2}{\sqrt{6}}=0.4899$

B. Let n be the sample size,

$0.325=\dfrac{1.2}{\sqrt{n}}\\\\\Rightarrow\ \sqrt{n}=\dfrac{1.2}{0.325}\\\\\Rightarrow\ \sqrt{n}=3.69230769231\\\\\Rightarrow\ n= (3.69230769231)^2=13.6331360947\approx 14$

Hence, the required sample size = 14

3 0

3 years ago

Expand and simplify (4 + √7)(2 - √7).

marusya05 [52]

Answer:

1 - 2√7

Step-by-step explanation:

( 4 + √7)(2 - √7)

Open the brackets with

( 4+ √7)

= 4( 2 - √7) + √7(2 - √7)

= 8 - 4√7 + 2√7 - √49

= 8 ( -4 + 2)√7 - √49

= 8 - 2√7 - 7

= 8 - 7 - 2√7

= 1 - 2√7

6 0

3 years ago

Two numbers total 60 and have difference of 20. Find the numbers.

Nonamiya [84]

50 + 30= 80
80 - 20= 60

5 0

3 years ago