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stealth61 [152]
3 years ago
14

Help show work pleaeee

Mathematics
2 answers:
Inga [223]3 years ago
7 0

SA = 2\pi rh+2\pir^2

1. Find the radius.

R = 1/2D

6 x 1/2 = 3

R = 3

2. Plug them in.

SA 2(3.14)(3)(7) + 2(3.14)(3^2)

3. Solve

3 x 7 = 21

21 x 3.14 = 65.94

65.94 x 2 = 131. 88

3^2 = 9

9 x 3.14 = 28.26

28.26 x 2 = 56.52

4. Add them together.

131.88 + 56.52 = 188.4

Answer: 188.4 square millimeters

stepan [7]3 years ago
5 0

Answer:

169.52

Step-by-step explanation:

A

 

=

 

2

π

r

h

 

+

 

2

π

r

2

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Y = 1000x = _____???
Georgia [21]

Answer:

Simplifying

y = 1000X

Solving

y = 1000X

Solving for variable 'y'.

Move all terms containing y to the left, all other terms to the right.

Simplifying

y = 1000X

Step-by-step explanation:

5 0
3 years ago

Anestetic [448]

Answer:

5 pounds

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Recall that m(t) = (1/2)^t/h for radioactive decay, where h is the half-life. Suppose that a 500g sample of phosphorus-32 decays
katrin2010 [14]

The question is incomplete, here is the complete question:

Recall that m(t) = m.(1/2)^t/h for radioactive decay, where h is the half-life. Suppose that a 500 g sample of phosphorus-32 decays to 356 g over 7 days. Calculate the half life of the sample.

<u>Answer:</u> The half life of the sample of phosphorus-32 is 14.28days^{-1}

<u>Step-by-step explanation:</u>

The equation used to calculate the half life of the sample is given as:

m(t)=m_o(1/2)^{t/h}

where,

m(t) =  amount of sample after time 't' = 356 g

m_o = initial amount of the sample = 500 g

t = time period = 7 days

h = half life of the sample = ?

Putting values in above equation, we get:

356=500\times (\frac{1}{2})^{7/h}\\\\h=14.28days^{-1}

Hence, the half life of the sample of phosphorus-32 is 14.28days^{-1}

7 0
3 years ago
How do you simplify 1/5(10x-25)
kozerog [31]

Answer:2x-5


Step-by-step explanation:


4 0
3 years ago
Read 2 more answers
Worth 2 marks and I need it urgently pls
melisa1 [442]
4c6d3 x 3c4d

4 x 3=12
12c
you add the powers so 6+4=10
12c10
d3 x d=d3
12c10d3


that is the answer i think

4 0
3 years ago
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