LabTech is a company that manufactures microscopes and other laboratory instruments. On (Ipoint) occasion, one of the microscope
1 answer:
Answer:
probability of 1st defective = 0.844
correct option is d. 0.844
Step-by-step explanation:
given data
probability defective = 0.17%
undefective microscopes = 100
to find out
the probability that the first defective microscope
solution
we know defective probability P = 0.17% = 0.0017
so non defective probability (1-P) = 1 - 0.0017
non defective probability (1-P) = 0.9983
and
1st defective come after 100 it mean 1st 100 are non defective so
probability of 1st defective =
probability of 1st defective =
probability of 1st defective = 0.844
so correct option is d. 0.844
You might be interested in
Answers:
- b = -19
- b = -11
- b = -9
- b = 19
- b = 11
- b = 9
====================================================
Explanation:
Here are all the ways to multiply to 18 when using integers only:
- -1*(-18) = 18
- -2*(-9) = 18
- -3*(-6) = 18
- 1*18 = 18
- 2*9 = 18
- 3*6 = 18
Sum each pair of factors to find out a possible value of b.
- -1 + (-18) = -19
- -2 + (-9) = -11
- -3 + (-6) = -9
- 1 + 18 = 19
- 2 + 9 = 11
- 3 + 6 = 9
Therefore, the possible values of b are
- b = -19
- b = -11
- b = -9
- b = 19
- b = 11
- b = 9
which are the final answers.
----------------------
An example:
Let's say b = 11. This would mean becomes
It would factor to since it was stated earlier that:
2+9 = 11
2 * 9 = 18
You can use the FOIL rule, distributive property, or the box method to confirm that is a true equation for all real numbers x.
This same idea applies for the other values of b.
----------------------
If you're curious why this works, consider multiplying the two factors (x+p) and (x+q)
Use the FOIL rule to get
The middle term has the components add to the coefficient, while those same two components multiply to get the last term. This is why when factoring we're looking for two numbers that multiply to 18, and also add to the value of b (which in the case of the last example was 11).