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3 years ago

How to prove that a shape is a square on the coordinate plane?

Mathematics

2 answers:

andre [41]3 years ago

8 0

You can count the length and width and show that they are equal.

Goshia [24]3 years ago

5 0

If a quadrilateral has four congruent sides and four right angles, then it's a square, and also If two consecutive sides of a rectangle are congruent, then it's a square.

Glad I could help, Have a great day!

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A square has sides that are 80 ft long. Which equations can be used to calculate d the length of a diagonal of the square in fee

LenKa [72]

Notice the picture below

just use the pythagorean theorem to ge the diagonal

$\bf c^2=a^2+b^2\implies c=\sqrt{a^2+b^2}$

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3 years ago

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Musya8 [376]

Answer 1061

Step-by-step explanation:

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3 years ago

The function C(x)=−20x+1681 represents the cost to produce x items. What is the least number of items that can be produced so th

Reptile [31]

Answer:

<em>The least number of items to produce is 41</em>

Step-by-step explanation:

<u>Average Cost</u>

Given C(x) as the cost function to produce x items. The average cost is:

$\displaystyle \bar C(X)=\frac{C(x)}{x}$

The cost function is:

$C(x) = -20x+1681$

And the average cost function is:

$\displaystyle \bar C(X)=\frac{-20x+1681}{x}$

We are required to find the least number of items that can be produced so the average cost is less or equal to $21.

We set the inequality:

$\displaystyle \frac{-20x+1681}{x}\le 21$

Multiplying by x:

$-20x+1681 \le 21x$

Note we multiplied by x and did not flip the inequality sign because its value cannot be negative.

Adding 20x:

$1681 \le 21x+20x$

$1681 \le 41x$

Swapping sides and changing the sign:

$41x \ge 1681$

Dividing by 41:

$x\ge 41$

The least number of items to produce is 41

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3 years ago

Help I will mark you the brainiest!!

iVinArrow [24]

The next term in the sequence is double the previous term . so it would be the 3rd option (48,96,192)

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3 years ago

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