Answer:
4 cm²
Step-by-step explanation:
Area = ½.bh
b = base (cm²)
h = perpendicular height, i.e. BD (cm²)
Answer:
31/40
Step-by-step explanation:
Find a common denominator
2/5= 16/40
3/8= 15/40
16/40+15/40= 31/40
Answer:
6
Step-by-step explanation:
you see that 4*30 gets us to 120 so you do 180 divided by 30 and you get 6
Answer:
A
Step-by-step explanation:
Null means nothing, or zero.
In the case of matrix, a null matrix is a matrix where all its elements are zeros.
They can be of any order, 2 x 3 matrix, 2 x 4 matrix, 2 x 2 matrix etc.
A matrix has a diagonal and other values (non-diagonal). When diagonal is 0 only, and not other, its is still not null. When all the values of a matrix are 0, all the elements are 0, then we call that Null Matrix.
It is equivalent to Zero (0) in the number system.
Correct answer choice is A
Answer:
x = -1/3 and x = 4 choose 4
Step-by-step explanation:
3x2 + 11x – 4= 0
...
3xx - 12x + x - 4 = 0
3x(x -4) + x - 4 = 0
(x-4)(3x + 1) = 0