Hi mathsupersaver1 the first one will be the correct one
Discriminant b^2-4ac = (-9)^2 - 4*2*9 = 9
so there are 2 roots
because of the -9x and 9 they will both be positive
Answer:
49 units
Step-by-step explanation:
Given the triangles are similar then the ratios of corresponding sides are equal, that is
= , substitute values
= ( cross- multiply )
22BC = 484 ( divide both sides by 22 )
BC = 22
------------------------------------------------
Similarly
= , substitute values
= ( cross- multiply )
22AC = 352 ( divide both sides by 22 )
AC = 16
Thus perimeter of Δ ABC is
perimeter = AB + BC + AC = 11 + 22 + 16 = 49 units
Step-by-step explanation:
f(5) = 2(5 - 7) = 2(-2) = -4.
Answer:
B is correct
Step-by-step explanation:
When we add or subtract matrices, we combine respective parts of the matrices. For example, since 3 is respective to -1, we do 3-(-1)=4. And also since 2 is respective to 0, 2-0=2.
Hope this made sense.