Answer:
1) Distance=Speed*time
90=(x+1)*(x)+(2x+5)(x-1)
90=x^2+x+2x^2-2x+5x-5
3x^2+4x-95=0
2) 3x^2+4x-95=0. Using quadratic formula, we get
x=(-4±sqrt(16-4*3*(-95)<u>)</u>)/6, x=5 or - 19/5 but since x also represents time, it can't be negative.
3) Total time take she took for the journey is x+x-1=2x-1=2*5-1=9 hours
In exponents it could be 3130.51114^2, 213.998224 and 55.95097086
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Answer:
Answer:
3x + 3y = 0
7x - y = 8
Step-by-step explanation:
Answer:
1/4
Step-by-step explanation:
Answer:
4
Step-by-step explanation:
we know that 2/15 : 1/30 = 2/15 * 30 = 60/15 = 4