Answer:
A) 4x+3y=14
B) 3x-2y=2
We multiply equation A) by (2/3)
A) (8/3) x +2y = 28/3 then we add this to equation B)
5 (2/3) x = 11 (1/3)
x = 2
A) 4 * 2 + 3 y = 14
A) 3y = 6
y = 2
Step-by-step explanation:
D
Cuz sqr root of 20 = 2 sqrt 5, -2 sqrt 5
Answer: acute
Step-by-step explanation: it is less than 90 degrees so it is less the right angle
Part a
60h ≤ 438
Part b
7.3 hours
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