Step-by-step explanation: Start by setting equations equal and rearrange X^3 - x^2 + 1 = 0. Visual inspection of graph shows x between -1 and -1/2. Start with x = 3/4 plug in and calculate: just a little too small. Try going halfway towards -1: x =-7/8 Plug in and the answer is very far from 0. Go halfway back towards -3/4: -13/16 and the equality is very close.

8 0

3 years ago

Which of the following sets could be the sides of a right triangle?

MArishka [77]

In a right triangle the sum of the squares of the lengths of two shorter sides is equal to the square of the length of the longest side.

a.
$2^2+3^2=(\sqrt{13})^2 \\
4+9=13 \\
13=13 \\ true$

b.
$2^2+2^2=4^2 \\
4+4=16 \\
8=16 \\
not \ true$

c.
$1^2+(\sqrt{3})^2=2^2 \\
1+3=4 \\
4=4 \\
true$

The answer is A and C.

5 0

3 years ago

Read 2 more answers

Function or not a function?

n200080 [17]

Answer:

Not a function.

Step-by-step explanation:

There must only be one output per input but here we see the input 18 has two outputs ; 3 and 15 therefore this is not a function.

8 0

2 years ago