The answer is: x<12
Steps by steps
5(x+5)<85
Divide each term by 5 and simplify.
5(x+5)÷5<85÷5
Reduce the expression by cancelling the common factors.
x+5<85÷5
Divide 85 by 5.
x+5<17
Move all terms NOT containing "x" to the right side of the inequality.
Subtract 5 from both sides of the inequality.
x<-5+17
Add -5 and 17.
=x<12
-25x is the slope
-42 is the y-intercept
Answer:
1 I think would be because they have the same tension of 5.0 and that their wavelengths are quite similar
#2 they increase as the tension goes up
#3 The speed would be up because that's what happened in all the other experiment of the waves
Answer:
Step-by-step explanation:
- Let the speed of the boat be x
- Speed against the current in the river is x - 2
<u>Time in the river:</u>
<u>Time in the lake:</u>
<u>The difference:</u>
Solve for x to find the speed of the boat
<u>Multiply both sides by x(x - 2) to clear the fraction:</u>
- 6x = 15(x - 2) - x(x - 2)
- 6x = 15x - 30 - x² + 2x
- x² - 11x + 30 = 0
- (x - 5)(x - 6) =0
- x -5 = 0, x - 6 = 0
- x = 5 km/h, x = 6 km/h