Answer:
3
Step-by-step explanation:
The cardinality of a set a measure of the number of elements in a set.
A set is a group of objects that have a well defined relationship between them.
In the given set, A={1,4,9}
The set of A has 3 elements which are 1, 4 and 9
So, the cardinality of this set is 3.
a + a + a is the same as multiplying a by 3 so you would have 3a
b + b is the same as multiplying b by 2 so you would have 2b
Combing everything together you would have the final answer of :
3a + 2b + c
Answer:
If the lines are parallel, final form of his solution is
b) -5 = -5+1
Step-by-step explanation:
As the options are not given in the question and the question is incomplete, lets complete the question first.
Giovani solves a system of linear equations algebrically, he concludes that the lines are parallel. Which could be his final answer.
a) -5 = -5
b) -5 = -5+1
c) 11 = 11
d) 5 = 5
We know that parallel lines never cross at any point, there is no intersection point, which eventually means that there is no solution to the given equations. A system of equations which have no solution is called an inconsistent system of equations, and it graphs the parallel line.
From the options we can clearly see that only (b) has no solution, while all the rest of the options have solutions. Hence, -5 = -5+1 represents parallel lines.
Answer:
3cm
Step-by-step explanation:
cb is the same length bisector ac, so the answer is <u>3 cm</u>
