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san4es73 [151]
3 years ago
15

Work out the surface area of a sphere with the diameter of 13cm

Mathematics
2 answers:
Nikitich [7]3 years ago
5 0

Answer:

That would be 530.93

Step-by-step explanation:

GenaCL600 [577]3 years ago
4 0

Answer:

A=530.93

hope this helps

could you also please mark me as brainliest?

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Simplify the following expres<br> (- 4xy-2) - 5<br> (xy-2)-1
Vedmedyk [2.9K]

Step-by-step explanation:

(- 4xy - 2) - 5(xy - 2) - 1

-4xy - 2 - 5xy + 10 - 1

Solving like terms

-9xy + 7

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Which is the best estimate of the circumference of this circle?
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To what circle?mm

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Select the point that is a solution to the system of inequalities.<br> y≤2x-2<br> y≤ x²-3x
miss Akunina [59]

Both statements are true. Therefore (4,2) is a solution and option D is correct.

The given inequalities are y\leq 2x-2 and y\leq x^{2} -3x.

We need to select the point that is a solution to the system of inequalities (-2,-1), (1,3), (2,1) and (4,2).

<h3>What is an example of a system of inequalities in real life?</h3>

Inequalities can be seen in the speed limits on roads, the minimum age for seeing certain movies, and the distance you have to walk to go to the park. Inequalities represent a limit of what is permitted or achievable rather than a precise quantity.

Any point is a solution to this system of inequality if it satisfies both inequalities.

Check the inequalities by each option.

For (-2, -1), -1\leq 2(-2)-2 \implies -1\leq -6.

This statement is false because -1 is greater than -6. Therefore (-2,-1) is not a solution and option A is incorrect.

For (1, 3), 3\leq 2(1)-2 \implies 3\leq 0

This statement is false because 3 is greater than 0. Therefore (1,3) is not a solution and option B is incorrect.

For (2,1), 1\leq 2(2)-2 \implies 1\leq 2.

1\leq 2^{2} -3(2) \implies 1\leq -2

This statement is false because 1 is greater than -2. Therefore (2,1) is not a solution and option C is incorrect.

For (4,2), 2\leq 2(4)-2 \implies 2\leq 6

2\leq 4^{2} -3(4) \implies 2\leq 4

Both statements are true. Therefore (4,2) is a solution and option D is correct.

To learn more about inequalities visit:

brainly.com/question/20383699.

#SPJ1

7 0
2 years ago
Describe how a point on a graph is related to a table and an equation that represent the same relationship.
castortr0y [4]

Answer:

because everything is relative to each other.

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8/8 is bigger than 3/4 because 8/8 is equivalent to 1 and 1 is bigger than 3/4.
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