Answer:
![b\leq 12](https://tex.z-dn.net/?f=b%5Cleq%2012)
Step-by-step explanation:
Formula of a rectangle:
![a=h*w](https://tex.z-dn.net/?f=a%3Dh%2Aw)
a = area
h = height
w = width (or base length)
Replace the variables with the numbers given:
![48=4*b](https://tex.z-dn.net/?f=48%3D4%2Ab)
Divide both sides by 4:
b = 12
Since 48 is the max, the number can only be equal to or lower than 12:
![b\leq 12](https://tex.z-dn.net/?f=b%5Cleq%2012)
Well 5 pieces divided by 2 weeks would average a total of 2.5 pieces a week.
Take that 2.5 pieces and multiply by 10.
25 pieces
Rearrange to: x^2 + 18x - 25 = 0
Then factorise (I like to do it by completing the square):
(x + 9)^2 -81 -25 = 0
(x + 9)^2 = 106
x + 9 = sqrt(106)
The sol'ns are:
x = -9 + and - sqrt(106)
Answer:
x= -13 (a)
Step-by-step explanation:
-2x=35-9
-2x=26
x=-13
hope this helps x.
Answer:
I think its 24.86 mph
Step-by-step explanation:
n= speed of train
3*58=174 distance car traveled in 3 hours and train traveled in 7 hours
7n=174
n=174/7=24.86 mph