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pentagon [3]
3 years ago
5

Need help with these

Mathematics
1 answer:
Ugo [173]3 years ago
8 0
T = nb is the answer
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I NEED HELP PLZ ASAP!!!!! In right triangle ABCD above, x = A. 6 B. 8 C. 6√2 D. 10 E. 13
REY [17]

Answer:

x=6

Step-by-step explanation:

Since this is a right triangle we can use  the Pythagorean theorem

a^2 + b^2 = c^2

where a and b are the legs and c is the hypotenuse

x^2 + (x+2)^2 = (2x-2)^2

FOIL (x+2)^2 = x^2 +2x+2x+4 = x^2 +4x+4

FOIL (2x-2)^2 = 4x^2 -4x -4x+4 = 4x^2 -8x+4

Replacing these in to the equation

x^2 +x^2 +4x+4 = 4x^2 -8x+4

Combine like terms

2x^2 +4x +4 = 4x^2 -8x +4

Subtract 4 from each side

2x^2 +4x +4-4 = 4x^2 -8x +4-4

2x^2 +4x = 4x^2 -8x

Subtract 2x^2 from each side

2x^2 -2x^2+4x = 4x^2-2x^2 -8x

4x = 2x^2 -8x

Subtract 4x from each side

4x-4x = 2x^2 -8x-4x

0 = 2x^2 -12x

Factor out a 2x

0 = 2x(x-6)

Using the zero product property

2x =0  x-6 =0

x =0  x-6+6 = 0+6

x = 0  c=6

5 0
4 years ago
Ali's latest photo got 42 likes this is 3 times as many likes as Kate's latest photo how many likes did Kate's photo get
Dovator [93]
Hope this answer helps you! If it did, please mark it as the brainiest! I would really appreciate it! :)

4 0
3 years ago
I don't understand this? help me! Linear functions 9th-grade math
GrogVix [38]

Answer:B i think

Step-by-step explanation:

7 0
3 years ago
*7.NS.1: Apply and extend previous understandings of addition and subtraction to add and subtract rational numbers;
aleksandrvk [35]

Answer:

////////////////////////////:

Step-by-step explanation:

5 0
3 years ago
What is the value of exterior
dmitriy555 [2]
The sum of interior angles of this pentagon is 540 ( 180(5-2)=540)
So it is : 85+120+90+2x-10+180-x=540. ( in case you ask where did I get 180-x , it is bc the line is 180 degree so minus x it will help us find one of the interior angles)
So x+465=540. x=75
The value of exterior is 75
3 0
3 years ago
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