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1 year ago

I need the answer asap pls! :)

Mathematics

1 answer:

AfilCa [17]1 year ago

7 0

Answer:

18m

Step-by-step explanation:

Since the given traingles are similar

We get

$\frac{JK}{MN} = \frac{KL}{ML}$

$\frac{JK}{42} = \frac{21}{49}$

$JK = \frac{21 \times 42}{49}$

$JK = \frac{3 \times 7 \times 6 \times 7}{7 \times 7}$

$JK = 3 \times 6 = 18$

$JK = 18$

Hence the distance across river is 18m

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2 years ago

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${\qquad\qquad\huge\underline{{\sf Answer}}}$

Let's solve ~

Equation of directrix is : y = 1, so we can say that it's a parabola of form : -

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