33+11+55/3
so 33+11=44
44+55=99 now divide 99 by 3 to get 33
If three dozens took 15 minutes that five minutes a dozen and with six dozens it would be 30 minutes
Answer:
Step-by-step explanation:
1x = number of chocolate chip cookies
3x = number of walnut cookies
5x = number of ginger cookies
5x = 40
x = 8
Total cookies = 1x+3x+5x = 72
Answer:
table:
.1, .25, .35, .2, .1
p(x=4) = .1
p(x<2) = .35
p(3≤x≤4)= .55
1.95, 1.12
Step-by-step explanation:
this is kind of hard to read, but i think i've got it
mean:
0*.1+1*.25+2*.35+3*.2+4*.1= 1.95
The second moment:
0²*.1+1²*.25+2²*.35+3²*.2+4²*.1= 5.05
the variance is the second moment minus the first moment squared (first moment is the mean) and then the standard deviation is the square root of the mean
5.05-1.95²= 1.2475 √1.2475= 1.1169 or 1.12
Answer:
5
Step-by-step explanation:
3+9x=11x-7
subtract 9x from both sides
3=2x-7
add 7 to both sides
10=2x
divide by 2 on both sides
5=x
