Answer:
The solution is 
Step-by-step explanation:
You are given the system of three equations:
Multiply the first equation by 4, the second equation by 3 and subtract them. Then multiply the third equation by 2 and subtract it from the second equation:
So,
Multiply the third equation by 23 and subtract it from the second equation:
Hence,
Substitute it into the second equation:
Substitute them into the first equation:
The solution is
Formula: A=(pi)r^2
Substitution: A=3.14(7^2)
A=3.14(49)
Solve: A=153.86 in^2
*I personally like to use the pi sign on my calculator to multiply the radius squared by, but my keyboard did not have a pi sign. Usually, the pi sign is more exact. If you used the pi sign, your answer would be 153.94 inches^2. Hope this helps!
Answer:
B) $23.45
C) $157.50
A + B + C = $330.95
Step-by-step explanation:
$6.70 × 20 = $137 17.5% of $137 = $23.45
45c × 350 = $157.5
$150 + $23.45 + $157.50 = 330.95
1 cm : 50.
7x50=350
+
0.3x50=15 = 315. The actual distance is 315 miles.(?)
(?)-The other measurement wasn't given.
