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borishaifa [10]
3 years ago
12

6,650 round to the nearest 100 kilometres

Mathematics
1 answer:
ASHA 777 [7]3 years ago
6 0

Answer:

the answer could be 6,700 but I'm not sure what you mean

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The main tank has a radius of 70 feet. What is the volume of the quarter-sphered sized tank? Round your answer to the nearest wh
Misha Larkins [42]
Volume of a sphere with radius of 70 feet is:
V =  \frac{4}{3} * \pi * r^{3}

where r is that radius

Because we need quarter sized tank of that radius we need to divide formula for volume by 4

Than we get:
V =  \frac{1}{3} * \pi * r^{3}

V = 359188,76

Rounded:
V = 359189
8 0
2 years ago
What are irrational numbers?​
Marina CMI [18]

Step-by-step explanation:

Any real number that cannot be expressed as the quotient of integers

I HOPE THE DAY GOES GREAT.

7 0
3 years ago
Read 2 more answers
Use mathematical induction to prove that for each integer n > 4,5" > 2^2n+1 + 100.
Flura [38]

Answer:

The inequality that you have is 5^{n}>2^{2n+1}+100,\,n>4. You can use mathematical induction as follows:

Step-by-step explanation:

For n=5 we have:

5^{5}=3125

2^{(2(5)+1)}+100=2148

Hence, we have that 5^{5}>2^{(2(5)+1)}+100.

Now suppose that the inequality holds for n=k and let's proof that the same holds for n=k+1. In fact,

5^{k+1}=5^{k}\cdot 5>(2^{2k+1}+100)\cdot 5.

Where the last inequality holds by the induction hypothesis.Then,

5^{k+1}>(2^{2k+1}+100)\cdot (4+1)

5^{k+1}>2^{2k+1}\cdot 4+100\cdot 4+2^{2k+1}+100

5^{k+1}>2^{2k+3}+100\cdot 4

5^{k+1}>2^{2(k+1)+1}+100

Then, the inequality is True whenever n>4.

3 0
2 years ago
Thirty decreased by three times a number is six less than
Lerok [7]

Answer:

12

Step-by-step explanation:

let the number be a

30-3a= -6

collect the like terms

30+6=3a

3a=36

a=12

The number is 12

8 0
3 years ago
Please help me with any of the questions
Svetlanka [38]
1.) There are 6 numbers you can roll on a standard dice: 1, 2, 3, 4, 5, 6
There are 3 odd and 3 even. Keep in mind that an odd plus an odd will always be even and an even plus an even will always equal an even. Only if you add an odd and an even will you get an odd.

The chances of getting an even sum are much higher which is why you should choose even.

3.) The formula for finding the area of an equilateral triangle is (<span>√3)/4(a^2) where a is just a side length.

Because the perimeter is 12 and each side of an equilateral triangle is equal, we can divide 12 by 3 sides and get each side is 4. Plug in 4 for a.

</span>(√3)/4(4^2) = (√3)/4(16)

Because (√3)/4 = (1 x √3)/4, 
 (√3)/4(16) is equal to (16 x √3)/4

You have to divide (16 x √3) by 4. 16/4 = 4, and you only need to divide once to.  We get 4√3 as the final answer.
7 0
3 years ago
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