Answer:
We use cosine rule also called cosine law which states
c^2=a^2+b^2-2abcosC
given
a=8cm, b=7cm, c=9cm cos C?
9^2=8^+7^2-2*8*7 cos C
expand
81=64+49-112 cos C
like terms together
81-113=-112 cos C
-32=-112cos C
multiply both sides by -1
32=112cos C
divide both sides by 112
32/112=cos C
cosC=0.2857
find cos inverse of 0.2857
angle C= 73.40
we have the function
For x=2
substitute
therefore
<h2>the answer is 4.20 million dollars</h2>
Answer:
x=−4+√13 or x=−4−√13
Can I have brainliest? I need it for a challenge
Step-by-step explanation:
Answer:
- 1
Step-by-step explanation:
8m + 5n
8(3) + 5(- 5)
24 + (- 25)
24 - 25
- 1
Answer:
You haven't given a picture of the graph dear.
The point (-3,-2) lies in the third quadrant.
