For lines to be parallel, the slopes have to be the SAME.
To find the value of k, you can first find the slope of line 1 using the slope(m) formula, and plug in the points:
Now that you know the slope, you can use the slope formula to find k by plugging in what you know:
Multiply (5 - k) on both sides
Multiply -2 on both sides
5 - k = -2(7 + 1)
5 - k = -2(8)
5 - k = -16 Subtract 5 on both sides
-k = -21 Divide -1 on both sides
k = 21
4/1 = 2/x...4 miles to 1 hr = 2 miles to x hrs
cross multiply because this is a proportion
(4)(x) = (1)(2)
4x = 2
x = 2/4 reduces to 1/2...so she can walk 2 miles in 1/2 hr (or 30 minutes)
Answer:
180, 185, 190
Step-by-step explanation:
5x + (5x + 5) + (5x + 10) = 555
15x + 15 = 555
15x = 540
x = 36
3 number: 36x5 = 180, 185, 190
check: 180 + 185 + 190 = 555
Answer:
120
Step-by-step explanation:
US stamps = 5/8 × 480
= 300
foreign stamps = 480- 300
= 180
more US stamps than foreign stamps = 300-180
= 120
