Answer:
41
Step-by-step explanation:
by using formula D = b² – 4ac, we get
D = 1² – 4(5)(–2) = 41
ANSWER

EXPLANATION
The given radical expression is

Recall and use

to obtain;

Simplify the second radicand.

We have two like surds so we can simplify to obtain;

Answer:
C ≈ 95.7°
Step-by-step explanation:
Law of cosines:
c² = a² + b² − 2ab cos C
where a, b, and c are the sides of the triangle, and C is the angle opposite of side c.
9² = 5² + 7² − 2(5)(7) cos C
81 = 25 + 49 − 70 cos C
81 = 25 + 49 − 70 cos C
7 = -70 cos C
-1/10 = cos C
C ≈ 95.7°
Answer:
f(x) = −6(x + 1)(x + 5)
Step-by-step explanation:
f(x) = −6(x + 1)(x + 5) & f(x) = −5(x + 1)(x + 5) are the only ones on the correct side of the y-axis, and f(x) = −6(x + 1)(x + 5) has a y-intercept of -30.
Answer:
Step-by-step explanation:
a. amt. of weeks and hours worked