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3 years ago

Please help me!! Iv been stuck!

Mathematics

1 answer:

Sloan [31]3 years ago

7 0

Answer:

$7$

Step-by-step explanation:

Because the leftmost triangle is a 45-45-90 isosceles right triangle, $a = b =\frac{7\sqrt2}{\sqrt2} = 7\\$

The rightmost triangle is a 30-60-90 triangle, and the side lengths are in the proportion $1:\sqrt3:2$ from shortest to longest. Therefore, $c = 7\cdot\frac{\sqrt3}{1} = 7\sqrt{3} \implies \boxed{7}$

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Write 9/50 as a percent

Naya [18.7K]

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2 years ago

In the figure, AB∥CD. Find x and y.

velikii [3]

Answer:

y=131°

x=53°

Step-by-step explanation:

∠ ABD and ∠ BDC are supplementary.

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thus y-4+x=180...........i

x and 37° are complementary, that is, they add up to 90°

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2 years ago

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Using the given information, give the vertex form equation for each parabola.

ollegr [7]

Answer:

Step-by-step explanation:

If you plot this point and the directrix on a coordinate plane, you can see that the directrix is 1/4 of a unit below the vertex. Since, by nature, a parabola opens in the direction opposite the directrix and "hugs" the focus, this is a positive x-squared parabola (meaning it opens upwards). The formula for this type of a parabola is, in vertex form,

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