<h3>
Answer: 140 degrees</h3>
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Explanation:
See the diagram below.
We start with triangle PQR with the given angles mentioned. Then you extend out segment QR to form line QR. It goes off infinitely in both directions.
The exterior angle x adds to the interior angle Q = 40 to get 180
x+40 = 180
x+40-40 = 180-40 ... subtract 40 from both sides
x = 140
The exterior angle is 140 degrees
Answer:
Idk what the answer choices is if there is any
Scientific notation is 8.4 * 10^2
expanded form 840
7 1/4 - 5 3/4= 1 1/2 because you can either 1) change it into decimals: 7.25-5.75 and do simple subtraction or... 2) u can change the 7 to a 6 and add 4 to the numerator of 1/4 making the equation 6 5/4 - 5 3/4 = 1 2/4 which simplified to 1 1/2 I hope I didn’t confuse you! :))
Answer:
Surface area = 144 mi.²
Step-by-step explanation:
Surface area of the triangular prism = bh + (P)L
Where,
b = base of triangular base = 6 mi.
h = height of triangular base = 8 mi.
P = Perimeter of triangular base = 10 + 8 + 6 = 24 mi.
L = height of the prism = 4 mi.
Plug the values into the formula
Surface area = 6*8 + (24)4
= 48 + 96
= 144 mi.²