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Lubov Fominskaja [6]
1 year ago
8

9. What is the relationship between the estimates you found for the lengths of the two equators?4 grade student

Mathematics
1 answer:
Ann [662]1 year ago
7 0

7. You have the equator's length of four planets, the distances are given in kilometers

8. Estimation for the Earth: 40.000 km. Jupiter: 400.000. These approximations come from the nearest whole number for each.

9. The relation is that if the Jupiter equator's length is divided by ten, you will get the Earth's equator length, which means that Jupiter's equator is ten times bigger than the earth.

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How many elements must a set have if the number of proper subsets of the set is one half
Svet_ta [14]
2^n - 1 = 1/2(2^n)
2^1 - 1 = 2^1/2
2 - 1 = 2/2
1 = 1

Theefore, the set must have one element
5 0
3 years ago
What pattern do you see for numbers divisible by 5
Vladimir [108]

Numbers which have the digits 5 or 0 as their last digit are divisible by 5.

For example- 10, 35, 70, 675 etc ..

Hope it helps!

7 0
2 years ago
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Please help with this math problem! Will give brainliest! :)
tangare [24]

Answer:

9

Step-by-step explanation:

All triangles (3 sided polygons) have angles added up to 180, so we can do the following:

(7x-1) + (7x+8) + (5x+2) = 180° <em>- equation</em>

7x-1 + 7x+8 + 5x+2 = 180° <em>- "distribute"</em>

19x - 1 + 8 + 2 = 180°<em> - combine the x terms</em>

19x + 9 = 180° <em>- combine the integer terms</em>

19x = 171 <em>- subtract 9 form both sides</em>

x = 9 <em>- divide both sides by 19</em>

4 0
2 years ago
Can someone please explain? I don't understand
Nezavi [6.7K]
A solution for a pair of lines means that they are equal to each other. This occurs when they instersect. Since the lines have the same slope, but are not the same line, they are parallel, so they will never intersect. This means there are zero solutions.
Hope this helps!
6 0
3 years ago
A fair coin is flipped 120 times. Estimate the expected number of ‘heads’.
Bumek [7]

when coin is flipped 5 times probability is 1/2

so coin heads comes out to be 2.5

This is a binomial distribution with a probability of success = 0.5 (fair coin).

n=10

so

mean = E[x] = np =10*0.5 =5

7 0
2 years ago
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