Answer:
C
Step-by-step explanation:
When we write an equation, we look for something like is or equals
A.twice as much as a number 2x
B.12 less than a number x-12
C.half of a number is 15 1/2x =15
D.the difference of 20 and a number? 20-x
A,B, and D are expressions
Answer:
1. Not equal
2. Equal but not connected
3. Equal
4. Equal
Step-by-step explanation: Sorry if not correct :(
Answer: x=7
Step-by-step explanation:
2x=17-3
2x=14
X=7
Answer:
17-6k
Step-by-step explanation:
-17k+k=6k
ANSWER

EXPLANATION
We were given that,

This implies that,

We use the Pythagorean identity

to get,

We were also given that,

This means that,

This is because,


This angles are in the first quadrant so we pick the positive values.




The correct answer is D