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Ray Of Light [21]
2 years ago
9

Find the length of the unknown side. Round your answer to the nearest tenth. 20 m 12 m b

Mathematics
1 answer:
stepladder [879]2 years ago
4 0

The length of the unknown side is 16 meters

<h3>What is a right triangle?</h3>

A right triangle is a triangle that has one of its angles to be 90 degrees

The length of the unknown side is calculated using the following Pythagoras theorem.

20^2 = 12^2  +b^2

Evaluate the exponents

400 = 144  +b^2

Collect like terms

b^2 = 400 -144

Evaluate the like terms

b^2 = 256

Take the square root of both sides

b = 16

Hence, the length of the unknown side is 16 meters

Read more about Pythagoras theorem at:

brainly.com/question/654982

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Helen [10]

Answer:

8.3

Step-by-step explanation:

The tenths spot in 8.275 is where the 2 is. Since it is a 75 after that you will round it up.

. Tenths (2), Hundredths (7), Thousandths (5)

8 0
3 years ago
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otez555 [7]
Complementary angles are angles who sum to 90 degrees. So, since one angle is 13 degrees, naturally the other must equal 77. Good luck! c:
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2 years ago
Which transformation could NOT be used to prove that two circles are congruent to one another?
EleoNora [17]

Answer: D

Step-by-step explanation:

6 0
2 years ago
the length of a rectangular patio is 8 feet less than twice its width. the area of the patio is 280 square feet. find the dimens
jolli1 [7]

Answer:

The length of the rectangle 'l' = 20

The width of the rectangle 'w' = 14

Step-by-step explanation:

<u>Explanation</u>:-

Let 'x' be the width

Given data the length of a rectangular patio is 8 feet less than twice its width

2x-8 = length

The area of rectangle = length X width

Given area of rectangle = 280 square feet

x(2x-8) = 280

2(x)(x-4) =280

x(x-4) =140

x^2 -4x -140=0

x^2-14x+10x-140=0

x(x-14)+10(x-14)=0

(x+10)(x-14) =0

x = -10 and x = 14

we can choose only x =14

The width of the rectangle 14

The length of the rectangle 2x-8 = 2(14)-8 = 28 -8 =20

The length of the rectangle 'l' = 20

The width of the rectangle 'w' = 14

6 0
3 years ago
Find the solution to the system of equations.<br> 1 + 3y = 4<br> 2r + 5y = 12
ivann1987 [24]

Answer: {x,y}={-1,2}

step-by-step explanation:

// Solve equation [2] for the variable  x

 [2]    2x = 5y - 12

 [2]    x = 5y/2 - 6

// Plug this in for variable  x  in equation [1]

  [1]    2•(5y/2-6) + 3y = 4

  [1]    8y = 16

// Solve equation [1] for the variable  y

  [1]    8y = 16

  [1]    y = 2

// By now we know this much :

   x = 5y/2-6

   y = 2

// Use the  y  value to solve for  x

   x = (5/2)(2)-6 = -1

Solution :

{x,y} = {-1,2}

5 0
2 years ago
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