Answer:
why does this hurt my head so much
Step-by-step explanation:

- f (x) = 3x² + x
- Find f (-5).

Given,
Now, we have to find f (-5). To find this, we just need to substitute -5 in the place of x.
So,

Ans:
11 and four twelfths
Step-by-step explanation:
Answer:
=60
Step-by-step explanation:
18 + 12
=30
18/30 × 100%
=60
Answer:
a = 5
Step-by-step explanation:
Since the triangle is right use the sine ratio to solve for a and
sin30° =
, thus
sin30° =
=
, hence
=
( cross- multiply )
2a = 10 ( divide both sides by 2 )
a = 5