You would have to determine if the following lengths make an acute, right or obtuse triangle. Plug in each set of lengths into the Pythagorean Theorem.

8 0

3 years ago

Name the congruent angles.

Sliva [168]

The answer is: [C]: " ∡C ≅ ∡X ; ∡D ≅ ∡Y ; ∡A ≅ ∡Z " .
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7 0

3 years ago

F(x)=2x+1/x-1 then f^-1(1)

olasank [31]

Answer:

f⁻¹(x) = (x + 1) / (x - 2)
f⁻¹(1 ) = - 2

Step-by-step explanation:

Given function:

f(x) = (2x + 1) / (x - 1)

Find its inverse, substitute x with y and f(x) with x, solve for y:

x = (2y + 1) / (y - 1)
x(y - 1) = 2y + 1
xy - x = 2y + 1
xy - 2y = x + 1
y(x - 2) = x + 1
y = (x + 1) / (x - 2)

Substitute y with f⁻¹(x):

f⁻¹(x) = (x + 1) / (x - 2)

Find f⁻¹(1 ):

f⁻¹(1 ) = ( 1 + 1) / (1 - 2) = 2 / - 1 = - 2

6 0

2 years ago