Answer:
y = 5
Step-by-step explanation:
Since this is an isosceles triangle, Angle B and Angle C are equivalent. We can use this to find x
3x = 75
x = 25
Angles in a triangle add up to 180, so knowing the measure of Angle B and Angle C, we can find the measure of Angle A
Angle A = 180-(75+75)
Angle A = 180-150
Angle A = 30
We know Angle A = 4y+10
4y + 10 = 30
4y = 20
y = 5
2X +2(15)=46
What is X?
2X+30=46
-30 -30
________
2X=16
X=8
(B) 16.5π
<u>Explanation:</u>
The shape given is a cylinder
The height, h of the cylinder = 4cm
Diameter of the cylinder = 3cm
Radius, r = 1.5 cm
Surface area of cylinder, A = ?
We know:
Surface area of cylinder = 2πrh + 2πr²
Therefore, the surface area would be 16.5π
Answer:
Answer:
Measure of ∠y is 90°
Step-by-step explanation:
We see that,
∠x and ∠y are vertical angles and ∠x, 40°, 50° are in a straight line.
Since, we know, Sum of angles in straight line is 180°.
Then, ∠x + 40° + 50° = 180°
i.e. ∠x = 180° - 90°
i.e. ∠x = 90°
Also, we know, 'Vertical angles have equal measures'.
So, ∠y = ∠x = 90°
Hence, measure of ∠y is 90°
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Step-by-step explanation:
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