Answer:
a positive number
Step-by-step explanation:
-(-) = +
for example, -1 * -1 = 1
Answer:
A is spanned by vector.
Step-by-step explanation:
The null space of matrix is set of all solutions to matrix. The linearly independent vectors forms subset which are spanned and forms the null space. The null space of vector can be found by reducing its echelon. The non zero rows formed are the null spaces of matrix.
F(x) = -x² + 4
f(3) = -3² + 4
f(3) = -9 +4
f(3) = -5
The answer is AB= 52, because x=15
Answer:
133 girls
Step-by-step explanation:
Total members = x
Number of boys = 
Number of girls = 
Number of boys + Number of girls = total members
x = 171
Number of boys = 
= 2 * 19 = 38
Number of girls = 38 + 95 = 133
