Answer:40 min
Step-by-step explanation:
5+.10x=3+.15x
-.10. -.10
5= 3+.05x
-3. -3
2=.05x
Divide by .05
X=40
Brandon. He earns $25 per lawn, while Adam only earns $20 per lawn
Answer:
the probability that a sample of 4 bags will have a mean weight less than 9.8 pounds is 0.05
Step-by-step explanation:
Given the data in the question;
μ_x = 10 pound bags
standard deviation s_x = 0.24 pounds
sample size n = 4
The bag weights are normally distributed so;
p( x' less than 9.8 ) will be;
p( (x'-μ_x' / s_x') < (9.8-μ_x' / s_x') )
we know that;
μ_x' = μ_x = 10
and s_x' = s_x/√n = 0.24/√4
so; we substitute
p( z < ( (9.8 - 10) / (0.24/√4) )
p( z < -0.2 / 0.12 )
p( z < -1.67 )
{ From z-table }
⇒ p( z < -1.67 ) = 0.0475 ≈ 0.05
Therefore, the probability that a sample of 4 bags will have a mean weight less than 9.8 pounds is 0.05
Answer:
yes
Step-by-step explanation:
175 + 263 = 438
to get 40% do 40/100=0.4
so 438 x 0.4 = 175.2
175 is about 40% of 438
Answer:
A 35
Step-by-step explanation:
75-40=35
