Step-by-step explanation:
just applieng quadratic form
![- b ±\frac{ \sqrt[2]{ {b}^{2} - 4ac} }{2a}](https://tex.z-dn.net/?f=%20-%20b%20%20%C2%B1%5Cfrac%7B%20%5Csqrt%5B2%5D%7B%20%7Bb%7D%5E%7B2%7D%20%20-%20%204ac%7D%20%7D%7B2a%7D%20)
Answer:
The wheel will make 40 revolutions.
Step-by-step explanation:
We are given;
Diameter = 77 cm = 0.77m
Radius = 0.77/2
Radius = 0.385 m
Speed = 1.1 m/s
time = 1min 28 sec = 88 sec
Now, we know that;
Distance = speed×time
Thus;
Distance = 1.1 × 88
Distance = 96.8 m
Also,
Number of revolution = distance/circumference
Number of revolutions = 96.8/(2 × π × 0.385)
Number of revolutions ≈ 40
Answer: 0 is the place number for 10
Answer:
a). Nadia made a total of $825 last week in commission sales
b). The total amount Nadia in commission in 2011=$42,900
Step-by-step explanation: Total amount (2011)=Average weekly commission × number of weeks in 2011 where; Average weekly commission=$825 number of weeks in 2011=52 replacing; Total amount (2011)=(825×52)=42,900
. The total amount Nadia in commission in 2011=$42,900.