Let a=number of pens and b=number of pencils.
8a+7b=3.37; 5a+11b=3.10.
To eliminate a variable multiply the first eqn by 5 and the second by 8:
40a+35b=16.85, 40a+88b=24.80.
Subtract these equations: 53b=7.95, b=$0.15. So 5a=3.10-1.65=$1.45, a=$0.29.
Pens are $0.29 each and pencils $0.15.
Answer:
8 tan 50 deg
Step-by-step explanation:
m<A = 50 deg
tan A = x/8
x = 8 tan 50 deg
Answer: C 8 tan 50 deg
Answer:
3(sqrt42) ft
Step-by-step explanation:
If <em>l</em> is side length of square patio, then area of patio would be <em>l^2.</em>
<em>l^2 = 378</em>
<em>l = sqrt378 = 3(sqrt42)</em>
1. A pentagonal pyramid has 6 faces, 10 edges, and 6 vertices
2. The polygons you would need to construct a pentagonal pyramid are a triangular or rectangular pyramid. Or probably just a triangle and a pentagon (I’m not sure, hope I helped)
