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Anna11 [10]
3 years ago
13

If the legs of a right triangle are x, (2x - 1) and its hypotenuse is (2x + 1), what is the value of x?​

Mathematics
1 answer:
Ber [7]3 years ago
3 0

Answer:

x=8

Step-by-step explanation:

(2x + 1)² = x² + (2x - 1)² = x² + (2x - 1)(2x - 1)

(2x + 1)(2x + 1) = x² + 4x²-2x-2x+1

4x²+2x+2x+1 = 5x²-4x+1

4x²+4x+1 = 5x²-4x+1

0= 5x²-4x²-4x-4x+1-1

0= x²-8x

x²-8x=0

x²=8x

x=8

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Amari claims that a rectangle is sometimes a parallelogram but a parallelogram is always a
Maslowich

Answer:

The statement is false.

Step-by-step explanation:

A parallelogram is a figure of four sides, such that opposite sides are parallel

A rectangle is a four-sided figure such that all internal angles are 90°

Here, the statement is:

"A rectangle is sometimes a parallelogram but a parallelogram is always a

rectangle."

Here if we found a parallelogram that is not a rectangle, then that is enough to prove that the statement is false.

The counterexample is a rhombus, which is a parallelogram that has two internal angles smaller than 90° and two internal angles larger than 90°, then this parallelogram is not a rectangle, then the statement is false.

The correct statement would be:

"A parallelogram is sometimes a rectangle, but a rectangle is always a parallelogram"

6 0
2 years ago
Add -2 + (-7) = what is the answer
lina2011 [118]

Answer: -9

Step-by-step explanation: 2 + 7 = 9 and just put an negative in front of 9

<h2>-9 -_-</h2>

6 0
3 years ago
Read 2 more answers
How can you generate x-3y+5 from the expression x+y+4+2y+1
vladimir2022 [97]

Answer: Here is the explanation. also it it +3y not -3y

Step-by-step explanation:

x+y+4+2y+1=x+3y+5 because

2y+y=3y

so now you have x+3y+4+1

4+1=5

now you have: x+3y+5

if you do not understand, What i am trying to say is, you need to add all of the same things.

3 0
3 years ago
Write the equation of the line in fully simplified slope-intercept form.
Sav [38]
I think this is y = 2/1x+1
4 0
2 years ago
I need help !!!!!!!!!!!!!!! For 1 and 2
11Alexandr11 [23.1K]

Answer:

#1: 5

#2: \sqrt{40}

Step-by-step explanation:

Inverse of Pythagorean Theorem:  c²-b²=a²

c²   b²      a²

13²- 12² = 25

\sqrt{25} = 5

Pythagorean Theorem: a²+b²=c²

a²    b²     c²

2² + 6² = 40

c = \sqrt{40}

5 0
3 years ago
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