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Katyanochek1 [597]
3 years ago
14

5-7:

Mathematics
2 answers:
Solnce55 [7]3 years ago
7 0
The answer is 7.65
Hope this helps!
garri49 [273]3 years ago
6 0
The 3 panes would cost $7.65.
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The length of a rectangle is 4cm less than twice it’s width the perimeter of the rectangle is 34cm. What are the Demensions of t
serg [7]

Answer:

w=7 and l=10

Step-by-step explanation:

To find the dimensions, create an equation for its perimeter and solve. Recall, the perimeter formula for a rectangle is P = 2l+2w. P is 34 cm. L is 4cm less than twice the width or 2w-4. And the width is w.

P = 2l+2w

34 = 2(2w-4) + 2w

34 = 4w -8 +2w

34 = 6w -8

34+8 = 6w

42 = 6w

7=w

The width is 7 cm. To find the length substitute w=7 into l=2w-4.

l=2w-4

l=2(7)-4

l=14-4

l=10

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Which equation can be used to prove 1 + tan2(x) = sec2(x)?
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Answer:

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Step-by-step explanation:

Using the trigonometric identity

cos²x + sin²x = 1

Divide all terms by cos²x

\frac{cos^2x}{cos^2x} + \frac{sin^2x}{cos^2x} = \frac{1}{cos^2x} which gives

1 + tan²x = sec²x

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What angles do perpendicular lines form
Natasha2012 [34]

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Perpendicular lines form 90 degree angles. It creates 4 of them, to be exact. Hope this helps! :)

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If it takes 4 gallons of gas to go 92 miles, how many can be driven in 6 gallons
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