Answer: one
Step-by-step explanation:
13x - 23 = 29
13x = 52
x = 4
The first one is x^2 -9x +20
The second one is x^2 -12x +20
The third one is x^2 +x -20
The fourth one is x^2 - 8x -20
The answer is the third option, which is: Trapezoid.
The explanation for this asnwer is shown below:
1- A rectangular pyramid is a solid whose base is a rectangle and its faces are triangles.
2- When you slice or cut a solid with a plane, you obtain a shape which is known as "Cross section".
3- In this case, if these plane is perpendicular to the base but does not pass through the top vertex of the rectangular pyramid, the intersection of the plane with the pyramid, or the resulting shape will be a trapezoid.
Answer:
The average density of the rod is 1.11 kg/m
Step-by-step explanation:
Linear density is given by the expression 10/(sqrt(x 1)) kg/m
x is said to be measured in meters from one end of the rod. Therefore x represents the length of the rod = 8 m
Substitute the value of x into the expression of linear density to determine the average density of the rod
Average density = 10/(sqrt(81)) = 10/9 = 1.11 kg/m
Answer:
1/26
Step-by-step explanation:
This is a case of joint probability. We find the two probabilities separately and then multiply the results together:
P(odd number on cube) = 3/6 = 1/2; P(7 from a deck)) = 13/52 = 1/13
Then the desired joint probability is (1/2)(1/13) = 1/26
Note that the two events here are entirely separate and independent.