Answer:
1 hour
Step-by-step explanation:
Hello, let's say that her departure trip takes t in minutes, as her return speed is 3 times her departure speed, she took t/3 for the return and we know that this 40 minutes less, so we can write.
t/3=t-40
We can multiply by 3
t = 3t -40*3 = 3t - 120
This is equivalent to
3t -120 = t
We subtract t
2t-120 = 0
2t = 120
We divide by 2
t = 120/2 = 60
So this is 60 minutes = 1 hour.
Thank you.
First let's find y. We know the sum of angles equals 180, so if we add the angles of ABC, we'd get 180.
30+y+80+y=180
110+2y=180
2y=70
y=35
You could solve x ,but the only response with y=35 is c. But to solve for x, you'd ad 35 35 and xwhich would equal 180.
35+35+x=180
70+x=180
x=110
Answer:
H) B= 13
Step-by-step explanation:
<em>5 + b = 18</em>
<em>F) 5 + 5 = 10 so not equal to 18. It is not a solution</em>
<em>H) 5 + 13 = 18 it's equal . so it is the solution</em>
<em>G) 5 + 8 = 13 so not equal to 18. It is not a solution</em>
<em>J) 5 + 23 = 28 so not equal to 18. It is not a solution</em>
