Answer:
A.
Step-by-step explanation:
d = rt
If t is the time taken by the train, then the truck takes t+2 hours.
For the truck:
d = 45(t + 2)
For the train:
d = 60t
Total distance travelled by both:
= 2d
= 60t + 45(t + 2)
= 60t + 45t + 90
= 105t + 90 where t is the time taken by the train.
Hello!
Slope intercept form is y = mx + b, where m is the slope and b is the y intercept.
Now, we first can find the slope. We know the line is parallel to y = 2/5x - 2, and parallel lines <u>always have the same slope.</u> Therefore, we now know that the slope (or m) is 2/5. Substitute that in the equation.
y = 2/5x + b
Finally, we are given a point. We can substitute (-5, -3) into the equation, and then solve for b.
x = -5, y = -3
-3 = 2/5 (-5) + b
-3 = -2 + b
-1 = b
Now, we know what b is. Substitute this into the equation.
Therefore, y = 2/5x - 1 is our final equation.
Hope this helps!
Answer:
34
Step-by-step explanation:
Distance - formula
(a) y >_ 13
(b) x > 17.5
Explanations:
(a)
24.2 - y <_ 11.2
- y <_ 11.2 - 24.2
-y <_ -13
y >_ 13
(b)
- 12.5 + x > 5
x > 5 + 12.5
x > 17.5
(<_ means “less than or equal to” and >_ means “greater than or equal to”)
<span>Hey there, Lets solve this step by step.
</span>
<span>"Two times the quantity of a number minus 12”
</span><span>Two times the quantity = 2 * n
</span>
<span>number minus 12 = n - 12
</span>
Therefore
2n-12