5x + 2y = 7 . . . (1)
y = x + 1 . . . (2)
Putting (2) into (1) gives
5x + 2(x + 1) = 7 => 5x + 2x + 2 = 7 => 7x = 7 - 2 = 5 => x = 5/7
From (2) y = 5/7 + 1 = 12/7
Therefore, solution is {(5/7, 12/7)}
Answer:
A) x=14
Step-by-step explanation:
hello :
6(x − 2) − 4x = 16
6x-12 -4x =16
2x-12=16
add 12 : 2x=16+12
2x= 28
x=28/2=14
It will be $15 dollars for 5 drinks
12.3126 or 12.3..
How I figured this out:
https://www.mathsisfun.com/data/standard-deviation-formulas.html
Answer: 128.5 gallons
Step-by-step explanation:
V= πr²h
V=π15²42
V= 29688.05058in³ ÷ 231 ≈ 128.5 gallons
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