Please finish this and make sure you’re 100% right thank you

Mathematics

1 answer:

Lerok [7]3 years ago

3 0

Set the expressions equal to each other because the angles are congruent.

2x+25 = 3x-10

35 = x

Now plug the x (35) into either of the expressions.

2(35)+25 = 75+25 = 100°

X= 100°

Y = 80°

**Y is 80° because A straight line measures 180° and if one part measures 100°, then the other part has to measure 80° for the angle measure 180° total.

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Step-by-step explanation:

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The complete question in the attached figure

Part a)
we know that
ABC is a right triangle
∠ACB=45°
AC=hypotenuse------> 6√2 cm
sin 45=AB/AC-----> AB=AC*sin 45----> AB=6√2*√2/2----> AB=6 cm

the answer part a) is
AB=6 cm

Part b)
we know that
volume of the pyramid=(1/3)*Area of the base*height
area of the base=50 cm²
height=6 cm
so
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the answer part b) is
100 cm³