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4 years ago

Quadrilateral abcd is inscribed in a circle with m∠a = (x)degrees, m∠b = (2x - 10)degrees, and m∠c = (3x)degree. what is m∠d?

1 answer:

6 0

Hello,

When you have a polygon inscribed in a circle, the opposite angles are supplementary.

So we can start by saying that A + C = 180. Or x + 3x = 180. This gives us a value of 45 for x.

If we input that in for angle B, we get: 2(25) - 10 = 80.

If angle B = 80, then angle D must be 100, because the angles are supplementary.

Good luck,
MrEQ

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The sum of two numbers is 72 and their difference is 40. Using elimination method

d1i1m1o1n [39]

Answer:

here's what we know:

a + b = 72

a - b = 26

We can use the elimination method to solve this problem:

a + b = 72

a - b = 26

---------------

2a = 98

Divide both sides by 2:

a = 49

So we now have:

49 + b = 72

and:

49 - b = 26

Subtract 49 from both sides:

b = 23

and

-b = -23 (multiply both sides by -1) → b = 23

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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If polygons are similar ratio if sides will be same

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Elanso [62]

$\dfrac{3}{5} (30x - 15) = 72$

$18x - 9 = 72$

$18x = 81$

$x = 4.5$

Answer: All that you checked are right, except the last one, x = 4.5 as well.

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Suppose that x and y very inversely. X equals -4/15 when y =-105. Write a function that models the inverse variation then find Y

dezoksy [38]

Xy = k
(-4/15)(-105) = k
28 = k
xy = 28
10y = 28
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3 years ago