Answer: The answer is (C).
Step-by-step explanation: The given statement is - "Two matrices are row equivalent if they have the same number of rows". We are to explain whether the statement is true or false.
What are row equivalent matrices? The answer to this question is -
Two matrices are said to be row equivalent if one of the matrices can be obtained from the other by applying a number of elementary row operations. Or, we can say two matrices of same order are row equivalent if they have same row space.
Thus, the correct option is (C).
Answer: C
both a and b
Step-by-step explanation:
Both options A and B deals with the number of trials required for a single success. Thus, they are negative binomial distribution where the number of successes (r) is equal to 1.
The geometric distribution is a special case of the negative binomial distribution that deals with the number of trials required for a single success.
Answer:
Top-to-bottom, the boxes have this order in the proof: 1, 7, 4, 3, 9, 8, 5, 2, 6.
Step-by-step explanation:
The basic idea is to use the Pythagorean theorem to write two expressions for the length of altitude BD, also called "k", then equate them and simplify the result. This leaves an expression for DC, also called "x", which is replaced by a cosine expression to complete the proof.
Finally, the variations involving other combinations of sides and angles are suggested as being provable in the same way.
Answer:
Kyle is correct, because it is not possible to draw a trapezoid that is a rectangle.
Step-by-step explanation:
Trapezoid:
- It is a quadrilateral with only one pair of of parallel sides
- Also in Trapezoid all the four angles are not right angle
- In Trapezoid is it not necessary that the diagonals bisect at all the cases
- The opposite angles are supplementary
Rectangle:
- Opposite sides of a rectangle are parallel and equal, thus having two pairs of parallel lines
- In a Rectangles all the four angles are 90 degrees i.e, right angle
- Diagonals of rectangles must bisect each other
- The sum of any two angles is supplementary
Answer:
Step-by-step explanation:
When the stick is placed along the diagonal of the cuboid , shortest possible length will extend out above top of the crate .
Length of the diagonal
= 
= 78.69 cm
the length of the stick that extends out of the crate
= 90 - 78.69
= 11.31 cm
If θ be the angle made by stick with the base
cosθ = hypotenuse of base / diagonal of cuboid
=
= 
θ = 50°
