Answer:
See below
Step-by-step explanation:
1. (refresh if you cant see it)

2.
2(x + 3) = 20
Distribute.
2x + 6 = 20
2x + 3 = 20
Your answer is false.
3.
x
-2 because even though it includes the expression "x>5", those values are also above -2, including 5.
Answer:
x = √226
Step-by-step explanation:
Pythagorean Theorem: a² + b² = c²
In that case, plug in <em>a </em>and <em>b</em>,
15² + 1² = c²
c = √(15² + 1²)
c = 15.0333
This is NOT a Pythagorean triple.
Answer:
Step-by-step explanation:
- Math session = 45 min = 3/4 hr
- French session = 30 min = 1/2 hr
- Number of math sessions = m, total math hours = 3/4m
- Number of French sessions = f, total French hours = 1/2f
<u>Total hours constraint:</u>
<u>Number of session constraint:</u>
<u>So the system is:</u>
Because 6 times 9 is 54, To make it longer they just multiplied then added. They multiplied 6 times 5 which is 30 then multiplied 6 times 4 then added the two which equal 54.