Answer:
b^2 + 3b - 4 + 4/(b-2)
Step-by-step explanation:
see pic
It would be 99%. If you draw the normal distribution curve and plot the mean and standard deviation, it might help you visually.
:)
Answer:
0.069
Step-by-step explanation:
6.9 ×10^-2
69/1000
0.069
Answer:
expression
Step-by-step explanation:
expressions DON'T have equal signs but equations do.
Answer:
6 chairs
8 desks
Step-by-step explanation:
First, we assume that all 14 items he bought were chairs, if that was to be true then the office manager would spend...
125 x 14 = 1750$
We see that he spent less then he should have so now we start to substitute desks instead of chairs, and we have to keep in mind that if we change 1 chair to a desk then the total will increase by...
515 - 125 = 390$
Now we just find the difference between the needed total and the total that we get if the office manager would by only chairs and then divide the result by 390 in order to find the number of desks, and so we get...
(4870 - 1750) / 390 = 3120 / 390 = 8 desks
And now that we know the number of desks we just subtract the number of desks from 14 and get the number of chairs, and so...
14 - 8 = 6 chairs
