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sineoko [7]
3 years ago
6

Find the volume of a sphere that has a diameter of 40km

Mathematics
1 answer:
muminat3 years ago
6 0

Answer:


Step-by-step explanation:

volume of a sphere 4/3 pi r^3

vol=4/3 pi 20^3

= 4/3 x 3.1415x 8000

= 33510km^3

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What is 30.7 rounded to the nearest ones place
Crazy boy [7]

Answer:

its 31 when you round to 2 decimal points.

7 0
4 years ago
Arithmetic sequence help!!!!
andrew-mc [135]

a₅ = 10

a₁₀ = 20

a₁₅ = x

-------------------------------------------------------------------------------------------------------------------

Note that from a₅ to a₁₀, there is a addition of 10. This means that for every x(₅) jump, you add 10 to the whole number.

-------------------------------------------------------------------------------------------------------------------

So in this case:

a₁₀ = 20

a₁₅ = x

a₁₀ (+₅) = 20 (+10)

a₁₅ = 20 + 10

a₁₅ = 30

Note that: a₁₅ = x = 30

-------------------------------------------------------------------------------------------------------------------

x = 30, or (A) is your answer

-------------------------------------------------------------------------------------------------------------------

hope this helps

8 0
3 years ago
Read 2 more answers
Theo has $5 more than Denise and Denise has $11 more than Rudy. Together they have $45. How much money does Denise have?
Blizzard [7]
Let
x------> amount of money Theo has
y------> amount of money Denise has
z------> amount of money Rudy has

we know that
x+y+z=$45-----> equation 1
x=5+y-----> equation 2
y=11+z----> equation 3

substitute equation 2 in equation 1
[5+y]+y+z=45-------> 2y+z=40-----> equation 4

y=11+z----> equation 3
2y+z=40-----> equation 4

resolves the equations system
using a graph tool
see the attached figure

the solution is
y=17
z=6
x=5+y----> x=5+17----> x=22

the answer is
<span>Denise has $17</span>

6 0
3 years ago
Which step is the first incorrect step in the solution shown below? Solve: 5(x + 2) = 6x + 12 Step 1: 5x + 2 = 6x + 12 Step 2: -
Natalija [7]

Answer:

Step 1

Step-by-step explanation:

Correct solution step-by-step:

1. 5(x + 2) = 6x + 12

2. 5x + 10 = 6x + 12

3. 5x - 6x = 12 - 10

4. -x = 2

5. x = -2

4 0
3 years ago
If b = 0, then the number is also called a/an _____<br> number
Alex787 [66]

Answer:

imaginary number and a real number

6 0
3 years ago
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