Answer:
Number of Questions =3
Probability of giving a correct answer

Probability of giving two correct answers

Probability of giving all correct answers

Probability that at least one of them is correct

Probability that two of them is correct

Probability that all of them is correct

So, Required probability

Answer:
x = 14
Step-by-step explanation:
Two lines given in the picture intersect each other at a point.
Given angles are the linear pair of angles.
Since, linear pair of the angles is supplementary,
(7x - 1)° + (6x - 1)° = 180°
(7x + 6x) + (- 1 - 1) = 180
13x -2 = 180
13x = 180 + 2
x = 
x = 14
Therefore, x = 14 will be the answer.
Since x = 3, plus 3 into x and you should get f(3) = 6(3) which is equal to the answer 18.
Answer:
y=-x/3-8
Step-by-step explanation:
First we find 2 points:
(0,-8) and (6,-10)
then substitute in y=ax+b equation
-8=0a+b, b=-8
-10=6a-8
a= -1/3
Answer:
the amount of material in a closed cylindrical can is 22.61944
Step-by-step explanation:
Given:
- Height: 30 cm
- Diameter: 12
- Top and bottom is 0.2 cm thick
- The sides is 0.1 cm thick
The volume of cylindrical can by diameter is:
We use differentials to estimate:
The partial derivatives are presented hereafter:
= 
=
=
=
=
Hence, the estimated amount of material is:
= 22.61944
So the amount of material in a closed cylindrical can is 22.61944