Answer:
A)Her statement is not correct because a negative times a negative is a positive but if you times it by negative again then it will be negative again not positive
B)(–3) – (–5) = (–3) + 5 = 2
c)Yes she is correct
5 – (–3) = 5 + 3 = 8
(–3) – (–5) = (–3) + 5 = 2
Step-by-step explanation:
Answer:
You can use the side lengths to determine the angle by using trig. Sin, cosins, and tangent.
Answer:
<u><em>i hope it will work</em></u>
Step-by-step explanation:
f(x) = -5 x^2 + 2 x + 9
f(1)=-5(1)^2 +2(1) +9 = 6
similarly
f(2)=-5(2)^2 +2(2) +9 = -7
if its help-full then hit the stars and brain-list it
thanks
Answer: Down Because Say if you have a 20% grade that's considered an F and then you work up to fix that grade and get an 80 that's a b so u basically went up a grade
Step-by-step explanation:
Answer:
v ≈ (3.28512, 20.74146)
Step-by-step explanation:
v = 21(cos(81°), sin(81°))
v ≈ (3.28512, 20.74146) . . . . (x, y) components
The notation varies among authors. The vector can be written as ...
(r, θ) = (21, 81°)
r∠θ = 21∠81°
r cis θ = 21 cis 81°
v = 21·e^(i·9π/20)
(x, y) ≈ (3.28512, 20.74146)
v = 3.28512i +20.74146j . . . . perhaps this is the vector notation you want (i and j are unit vectors in the x- and y-directions, respectively)
