Register
Find all real numbers $x$ such that $3x - 7 \le 5x +9$. give your answer as an interval.
57.6k views
0 votes
Find all real numbers $x$ such that $3x - 7 \le 5x +9$. give your answer as an interval.

User Mttrb
by
8.5k points

2 Answers

3 votes

Answer:

[-8, inf)

Explanation:

The "expert verified" is wrong

User Xochitl
by
8.4k points
6 votes
We want to solve the inequality
3x - 7 ≤ 5x + 9
Subtract 3xfrm each side.
-7 ≤ 2x + 9
Subtract 9 from each side.
-16 ≤ 2x
Divide each side by 2.
-8 ≤ x
Multiply each side by -1.
8 ≥ x
Therefore -∞ < x ≤ 8 or x = (-∞, 8]

Answer: x = (-∞, 8]

User MiFi
by
8.0k points
← Prev Question Next Question →

Related questions

Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Other Questions

What is .725 as a fraction
How do you estimate of 4 5/8 X 1/3
A bathtub is being filled with water. After 3 minutes 4/5 of the tub is full. Assuming the rate is constant, how much longer will it take to fill the tub?
i have a field 60m long and 110 wide going to be paved i ordered 660000000cm cubed of cement  how thick must the cement be to cover field
Write words to match the expression. 24- ( 6+3)
Link Copied!