1) x=1
2) x=2.9
3) x=-10
4) x=?
5) IDK
Answer:
3
Step-by-step explanation:
To turn the word problem into an equation, when we read:
"I am thinking of a number" we write "x"
"when I double my number" we write "2x"
"and then subtract the result from 5" we write "5 - 2x"
"I get negative one" we write "-1 = 5 - 2x"
Now we solve for the number, which is x.
<em>Equation: </em>-1 = 5 - 2x
-1 = 5 - 2x
subtract 5 from both sides
-6 = -2x
divide both sides by -2
3 = x
<h3>
There we go! The number is </h3><h2>
3</h2>
Answer: 
Step-by-step explanation:
By the geometric mean theorem,

So, by the Pythagorean theorem,

Answer: C
Step-by-step explanation: When triangles are similar, all of their angles should be equal to their respective angles on the other triangle.