11 is the answer
hope this helps
Answer: 60 mph
Step-by-step explanation:
300+120+420=840
840/14=60
Answer:
52b-7.5
Step-by-step explanation:
Answer:
6×(7+13)-50= <u>70</u>
Step-by-step explanation:
First, solve the problem inside the parenthesis.
6×20-50
Now, multiply 6 times 20.
120-50
Subtract to get the final answer.
120-50= 70
<span>1.
P(</span>at least one of the calculators is defective)=
1- P(none of the selected calculators is defective).
2.
P(none of the selected calculators is defective)
=n(ways of selecting 4 non-defective calculators)/n(total selections of 4)
3.
selecting 4 non-defective calculators can be done in C(35, 4) many ways,
where

while, the total number selections of 4 out of 18+35=53 calculators can be done in C(53, 4) many ways,

4. so, P(none of the selected calculators is defective)=

5. P(at least one of the calculators is defective)=
1- P(none of the selected calculators is defective)=1-0.18=0.82
Answer:0.82