Answer:
10/3 aka 3 1/10
Step-by-step explanation:
Answer:
Step-by-step explanation:
Remark
The two trains are travelling towards each other. That means that their total distance = 912 km. Neither one has gone that distance by itself. The effect this has on the question is that you add the two rates multiplied by time.
Givens
r1 = x
r2 = x + 12
t = 3 hours
d = 912 km
Equation
d = r * t
r1 * t + r2 * t = 912
Solution
3x + 3*(x + 12) = 912 Remove the brackets
3x + 3x + 36 = 912 Combine like terms
6x + 36 = 912 Subtract 36 from both sides
<u> -36 -36</u>
6x = 876 Divide both sides by 6
6x/6 = 876/6
x = 146 km/h
Answer
Slow train = 146 km/hr
Fast train = 146 + 12 = 158 km/hr
Answer:
See below
Step-by-step explanation:
The question is missing information: " . . . how far would he go in an <u>???"</u>
<u></u>
If the question is how far he would go in a [Pick a despised car model} ? The answer is still 400. The car would break down.
If the question is how far would he go in the same amount of time:
Whe the speed limit was 55, it would take Bob (55 miles/hr)*(X hr) = 400 miles
X = 7.273 hours to go 400 miles at 55 mph.
A speed limit of 70 mph would allow Bob the go:
(70 miles/hour)*(7.272 hours) = 509.1 miles
The smallest value is 0.79
Answer:
<em>See Attachment for Graph</em>
<em></em>
Step-by-step explanation:
Given
Solving (a): Number of lawns in $240
Multiply both sides by 20
Solving (b): Cost of mowing 9 lawns
Multiply both sides by 9
To create a graph, we need to generate a formula;
If
So:
<em>The graph formula is</em>
<em>See Attachment for Graph</em>
