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3 years ago

What is the perimeter of the rectangle? one side is 6in. and the A=30 sq in.

Mathematics

2 answers:

vagabundo [1.1K]3 years ago

7 0

The answer should be 22 if its not sorry for the mistake.

monitta3 years ago

3 0

The perimeter of a rectangle can be found by dividing the area by one side.
30/6=5
Then, add the sides up and you get the perimeter.
5+5+6+6=22

The answer is 22 inches.

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Bezzdna [24]

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3 years ago

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2 years ago

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lozanna [386]

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3 years ago

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ycow [4]

Answer:

Step-by-step explanation:

Trigonometric identities:

$\sin^{2} (x) + { \cos}^{2} (x) = 1 \\ {\cos}^{2} (x) = 1 - { \sin}^{2} (x) \\ { \sin }^{2} x = 1 - {\cos}^{2} (x) \:$

Replace into the equation

$\frac{ \sqrt{1 - \cos^{2} (x) } }{ \sin(x) } + \frac{ \sqrt{1 - \sin^{2}(x) } }{ \cos(x) } \\ \\ = \frac{ \sqrt{ \sin^{2}(x) } }{ \sin(x) } + \frac{ \sqrt{ \cos^{2}(x) } }{ \cos(x) }$

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5 0

2 years ago

on a tree plantation, 3 out of every 20 trees has been cut down . If 840 trees have been cut down, how many are left?

bija089 [108]

Setting the equation up is probably the hardest part of this question. In this case, you're told that 3 out of every 20 trees has been cut down, which is the "ratio"; if a total of 840 trees have been cut down, there should be many more that are left since for every 20 trees, only three are cut down.

Set the equation up as:

3 / 20 = 840 / x

where x = the number of trees left standing.

Now, you just cross multiply and solve:

3 / 20 = 840 / x
3x = (840 x 20)
3x = 16800
x = 16800 / 3
x = 5600

Hope this helps!

Good luck

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3 years ago