Help me with the lisa and Kyle plz and tell me how you got it!!!!!!!!

Mathematics

1 answer:

mixer [17]3 years ago

8 0

For this, you have to do 2 1/4 - 1 2/5. First, you have to find a common denominator, so the common denominator for these fractions is 20. 4 can go into 20 five times so the numerator is 5. 5 can go into 20 4 times, so you have to do 2 x 4, so it's 8. Now the equation is 2 5/20 - 1 8/20. You cannot subtract 5 - 8, so you take 1 from 2 and add 20 to the numerator, so now it's 1 25/20 - 1 8/20. The answer is now 17/20. :)

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EastWind [94]

1. OK, we want csc A, which is 1/sin A. When we have a right triangle whose hypotenuse is the square root of two times the side, we're where the Pythagoreans were twenty five hundred years ago when they realized the diagonal of the unit square was incommensurate with the side.

In other words we have an isoceles right triangle, 45 degree angles, $a=b=14$ and $c=14 \sqrt{2}$ . So $\sin A = 1/\sqrt{2}$ so $\csc A=\sqrt{2},$ fourth choice.

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$\cos A = \dfrac{AC}{AB} \quad \textrm{or} \quad AC=AB \cos A = 7.8 \cos 23$ , choice four.

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6 0

3 years ago

find the measure of the missing side of a right triangle to the nearest tenth if one leg is 36cm in the hypotenuse is 39 cm

4vir4ik [10]

A^2+36^2=39^2
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