Using a z-score table, +.67 SD is 74.86 percent and +.68 SD is 75.17 % of all the cars I'll just use .674 SD
.674 x SD = .674 x 3.2 = 2.157 yrs
Add this to the median 8 + 2.157 = 10.157 yrs ~~ 10.2 yrs.
Cost of tacos = 8t cost of 3 burritos = 3b
(3b-3) / (8t-2) = 2/5
AND 10t + 4 b = 18 +( 3b-3 +8t-2) Now you have two equations with two unknowns...solve for t = 4 b =5
10(4) + 4 (5) = $60.00
m * d = 1 job
1/3 job = m* d / 3
Using n men (m*d) / (3n)
DID you actually READ the answer the guest posted???????????????
SEE:
https://web2.0calc.com/questions/can-t-figure-this-out_1#r1
A quick lookup finds this:
For a quadratic function in standard form, y=ax2+bx+c , the axis of symmetry is a vertical line x=−b/2a .
Sooo.....
-b/2a = -3
b/a = 6
Uuuuhhhh....where is the drawing?
Sorry.... 4.32 x 10^(-4) means move the decimal point 4 slots to the LEFT (I missed the ' - ' sign on my first answer....
= .000432
I just enetered in the calculator and resulted 17400
4.32 x 10^4 means move the decimal 4 spots to the right
= 43200