I would need to see it other wise how would i help you i do not know the other information i need to solve it
Answer:
2
Step-by-step explanation:
5x0.4=2
.4x2=5
It was rotated clockwise around the orgin 180 degrees
Answer:
C) A rhombus has four side that are the same length.
Step-by-step explanation:
Given:
A rectangle has a length of 20 cm and a width of 15 cm.
Length = 20 cm
Width = 15 cm
We need to explain why the rectangle is NOT a rhombus.
Now according to properties of Rhombus which are given below;
⇒All sides have equal length
⇒Opposite sides are parallel, and opposite angles are equal (it is a Parallelogram).
⇒The altitude is the distance at right angles to two sides
⇒And the diagonals of a rhombus bisect each other at right angles.
Since size of rectangle are length is 20 cm and width is 15 cm hence it is not a rhombus as Rhombus have all sides equal.
Hence Option C) A rhombus has four side that are the same length.
True, Every normal unitary operator u: x! x exists.
False, An if only if it is invertible, a matrix qualifies as unitary.
What is the matrix?
A group of numbers built up in a rectangular array with rows and columns. The elements, or entries, of the matrix, are the integers. In addition to numerous mathematical disciplines, matrices find extensive use in the fields of engineering, physics, economics, and statistics.
Here, we have
a. Every unitary operator U:X→X is normal as an operator A is unitary if A*A = AA* = I and an operator is normal if A*A = AA*.
Hence, every unitary operator u: x → x is normal.
b. A unitary matrix is always invertible but an invertible matrix need not be unitary. An invertible matrix A is unitary if A⁻¹ = A*
Hence, it is not true.
To learn more about the matrix from the given link
brainly.com/question/12567347
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