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2 years ago

15

A boat has a speed of 5 mph in calm water. It takes the boat 3 hours to travel updtream but only 2 hours to travel the same dist

ance downstream. Using the data in the table, what is the value of c, the speed current?

1 answer:

N76 [4]2 years ago

8 0

<span>
2(5+c)=3(5-c)
solve for c
10+2c=15-3c
5c=5
c=1</span>

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3 years ago

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2 years ago

. If α and β are the roots of

Lostsunrise [7]

Answer:

$18x^2+85x+18 = 0$

Step-by-step explanation:

<u><em>Given Equation is </em></u>

=> $2x^2+7x-9=0$

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So,

Sum of roots = α+β = $-\frac{b}{a}$

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<em>Now, Finding the equation whose roots are:</em>

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Sum of roots = $\frac{49}{4} + 9 /\frac{-9}{2}$

Sum of Roots = $\frac{49+36}{4} / \frac{-9}{2}$

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=> $x^2-Sx+P = 0$

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This is the required quadratic equation.

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2 years ago

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