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2 years ago

JUST HELP ME! PLEASE!!..0o0Applying the Pythagorean theorem, solve this triangle.

Mathematics

2 answers:

stira [4]2 years ago

5 0

Yas the answer is 100ft like the person before me has said.

Inessa [10]2 years ago

4 0

<h3>Answer: <u>100 ft</u> is the hypotenuse</h3>

===================================================

Work Shown:

a = 60 and b = 80 are the two known sides

c is the unknown hypotenuse

Applying the pythagorean theorem gets us...

a^2 + b^2 = c^2

60^2 + 80^2 = c^2

3600 + 6400 = c^2

10,000 = c^2

c^2 = 10,000

c = sqrt(10,000)

c = 100

A quick way to see that 100 ft is the missing side is to note that a 6,8,10 right triangle scales up to 60,80,100 after multiplying all three sides by 10.

Or you could start with a 3,4,5 right triangle and multiply all three sides by 20.

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2 years ago

In rectangle ABCD, AC = -x + 21, BP = -9x + 19, and DP = -y + 5. Find the value of y.

creativ13 [48]

Answer:

y=-5

Step-by-step explanation:

see the attached figure to better understand the problem

we know that

The diagonals of a rectangle are equal and bisect each other

$BP=\frac{1}{2}AC$

$DP=BP$

step 1

Find the value of x

$BP=\frac{1}{2}AC$

substitute the given values

$(-9x+19)=\frac{1}{2} (-x+21)$

solve for x

Multiply by 2 both sides

$-18x+38=-x+21$

$18x-x=38-21\\17x=17\\x=1$

step 2

Find the value of y

$DP=BP$

we have

$BP=-9x+19$

$DP=-y+5$

substitute

$-y+5=-9x+19$

substitute the value of x

$-y+5=-9(1)+19\\-y+5=10\\y=5-10\\y=-5$

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3 years ago

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3 years ago

Help please don’t understand.

sergij07 [2.7K]

Okay so first, area is length times width, so 1/4x*x would be first = 1/4(x^2)=64. Then area or x = 16 or -16

perimeter would be width times two plus length times two. I recommend using math papa to calculate these numbers.

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2 years ago

JUST HELP ME! PLEASE!!..0o0Applying the Pythagorean theorem, solve this triangle.​

JUST HELP ME! PLEASE!!..0o0Applying the Pythagorean theorem, solve this triangle.