Answer: 12 h ; 45 m
Step-by-step explanation:
*Important: From what I can see in this image, this appears to be a test. If this is the case, please do not cheat. In any case, here is the explanation.
What we know:
- Progress has been made to 4.75
- Rate of digging is 3/5 mph
- Depth must be at least 12 1/2
- We need to find the minimum amount of time the machine works
How to solve:
By setting up an algebraic equation, we can solve this.
Process:
- Set up equation 4.75 + 3/5x = 12 1/2
- Convert 19/4 + 3/5x = 12 1/2
95/20 + 12/20x = 250/20
12/20x= 155/20
- Isolate x via division /(12/20) /(12/20)
- +Simplify
x= 12 11/20
Solution: 12 ; 45
Answer:
linear equation
Step-by-step explanation:
43x + 4 = y is known as <u>a linear equation since its graph is a straight line</u>.
<span>"The slope is 2.50 and it represents the cost per mile traveled." is the right answer.
The line goes up 5 over 2 which is equivalent to 5/2. So for every 1 increase in x there is a 2.5 increase in y. This means every mile you travel is $2.50.
Wish you luck on your HW, and May the Force Be With You.
-Jabba</span>
Answer:
2
Step-by-step explanation:
xy/z where x = 3 y = -4 and z = -6
Step 1. Substitute x for 3 y for -4 and z for -6
(3)(-4)/(-6)
Step 2. Multiply
-12/-6
Step 3. Remove the negative signs (only when the numerator and the denominator are both negative numbers)
12/6
Step 4. Simplify
2