Answer:
2 is -1/3
3 is -6
4 is 2
Step-by-step explanation:
2 is 7x + 8x = 3x - 4
3 is 5x + (-3) = 2x + (-15)
4 is -4x + 17 = 6x -3
Answer:
Mark up = 39.09%
Step-by-step explanation:
Cost price = $11
Selling price = $15.3
Profit = Selling price - Cost price
= 15.3 - 11
= $4.3
![Mark - up = \frac{Profit}{cost} \times 100](https://tex.z-dn.net/?f=Mark%20-%20up%20%3D%20%5Cfrac%7BProfit%7D%7Bcost%7D%20%5Ctimes%20100)
![=\frac{4.3}{11} \times 100\\\\=39.09 \%](https://tex.z-dn.net/?f=%3D%5Cfrac%7B4.3%7D%7B11%7D%20%5Ctimes%20100%5C%5C%5C%5C%3D39.09%20%5C%25)
Answer: A) 264ft/minute
Step-by-step explanation:
1. Based on the information given in the problem, the speed of the track runner was 3 miles per hour (
).
2. If you want to know the speed of the track runner in feet per minute, you need to apply the following proccedure:
![(3\frac{mi}{h})(\frac{5280ft}{1mi})(\frac{1h}{60min})=\frac{(3)(5280)}{60}=264\frac{ft}{min}](https://tex.z-dn.net/?f=%283%5Cfrac%7Bmi%7D%7Bh%7D%29%28%5Cfrac%7B5280ft%7D%7B1mi%7D%29%28%5Cfrac%7B1h%7D%7B60min%7D%29%3D%5Cfrac%7B%283%29%285280%29%7D%7B60%7D%3D264%5Cfrac%7Bft%7D%7Bmin%7D)
3. Therefore, the answer is the option A.
Answer:
40 lbs was used
Step-by-step explanation:
If there is 20% left, that means 80% was used
50 *80%
Change to decimal form
50 *.80
40
40 lbs was used
Answer:
The value of m would be -1/5
Step-by-step explanation:
In order to find the m of the second line, we need to find the slope of the first line, which is 5. Now, the perpendicular slope would be the opposite and reciprocal. So we take 5 and we negate it to -5. Now we flip it to get -1/5, which is the slope of the new line.