4 units up means 4 is added to the y-coordinate
(-5, -3 + 4) and (0, 2 + 4)
= (-5, 1) and (0, 6)
Answer: B
Answer:
B 41.4
Step-by-step explanation:
complete Pythagoras for general triangles :
c² = a² + b² - 2ab×cos(C)
with "c" being the side opposite of the angle C.
=>
8² = 10² + 12² - 2×10×12×cos(C)
64 = 244 - 240×cos(C)
240×cos(C) = 244 - 64 = 180
cos(C) = 180/240 = 18/24 = 3/4 = 0.75
C = 41.40962211... ≈ 41.4
Its average speed rounded to 1dp is 54.76 miles per hour.
<h3>Average speed</h3>
Using this formula
Average speed=Distance/Time
Where:
Total Distance =230 miles
Time= 4.2 hours
Let plug in the formula
Average speed=230/4.2
Average speed=54.76
Inconclusion Its average speed rounded to 1dp is 54.76 miles per hour.
Learn more about average speed here:brainly.com/question/4931057
We'll use the Law of Cosines
We'll call
side a = length 5
side b = length 8
side c = length 10
and their corresponding angles as A, B and C
"C" would be the largest angle
cos (C) = (a^2 + b^2 - c^2) / 2 * a * b
cos (C) = (5^2 + 8^2 - 10^2) / 2 * 5 * 8
cos (C) = 25 + 64 -100 / 80
cos (C) = -11 / 80
cos (C) =
<span>
<span>
<span>
-0.1375
</span>
</span>
</span>
arc cosine (
<span>
<span>
<span>
-0.1375
</span>
</span>
</span>
) = 97.903 Degrees
The largest angle is 97.903 Degrees