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lapo4ka [179]
3 years ago
12

What is this?

Mathematics
2 answers:
7nadin3 [17]3 years ago
6 0
Commutative property
Changing the order doesn’t change the result
Example 2+3 = 3+2
34kurt3 years ago
3 0

Answer:

it would be commutative

Step-by-step explanation:

because if you change the order of the numbers the answer will be the same

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What is the volume of a hollow ball whose other radius is 200m and inner radius of 100m? What is the mass if it is iron?
kati45 [8]

Solution :

Volume of ball = Volume of outer ball - Volume of inner ball

V = \dfrac{4\pi R^3}{3} - \dfrac{4 \pi r^3}{3}\\\\V = \dfrac{4\pi}{3}( R^3 - r^3 )\\\\V = \dfrac{4\pi}{3}( 200^3 - 100^3 )\\\\V = \dfrac{4\pi}{3}(2^3 - 1^3) \times 10^6\\\\V = 2.93 \times 10^7 \ m^3

Now, density of iron is, d = 7300 kg/m³.

So, mass of iron ball is :

m = d\times V\\\\m = 7300\times 2.93 \times 10^7 \ kg\\\\m =  2.14 \times 10^{11}\ kg

Hence, this is the required solution.

5 0
3 years ago
Which number produces a rational number when multiplied by 0.25
luda_lava [24]
Is there any options for this question ?

3 0
3 years ago
The maximum height reached by the barnacle is..
kykrilka [37]

Answer:x=100

Step-by-step explanation:

6 0
3 years ago
The Student Council is selling raffle tickets to raise money for the Winter Dance. They have a total of 275 tickets to sell and
Amiraneli [1.4K]

Answer:

226

Step-by-step explanation:

To find the percentage of a given value, firstly convert to a decimal by dividing by 100:

82 ÷ 100 = 0.82

Now, multiply this decimal by the number of tickets:

275 x 0.82 = 225.5

Because you can't sell half a ticket, round up.

This means the total of tickets they need to sell is 226.

Hope this helps!

6 0
3 years ago
In the spinner below, what is the probability of landing on 6?
zheka24 [161]

Answer:I think it’s B

Step-by-step explanation:

6 0
3 years ago
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