Answer:
y = 81°
Step-by-step explanation:
let the 5 th angle in the pentagon be x
The sum of the interior angles of a polygon is
sum = 180° (n - 2) ← n is the number of sides
Here n = 5, then
sum = 180° × 3 = 540°
sum the angles and equate to 540
x + 95 + 125 + 116 + 105 = 540
x + 441 = 540 ( subtract 441 from 540 )
x = 99°
x and y are adjacent angles and supplementary, sum to 180° , that is
x + y = 180°
99° + y = 180° ( subtract 99° from both sides )
y = 81°
The solid shape is made from a cylinder and a hemisphere. The radius of the cylinder is equal to the radius of the hemisphere. The cylinder has a height of 10 cm. The curved surface area of the hemisphere is 32π cm2.
Minutes
Median 170
Lower quartile 100
Upper quartile 220
Answer:
3468 students
Step-by-step explanation:
289 x 12 = 3468
Step 1 : Divide the numerator by the denominator.
Step 2 : Write the quotient in the front as a whole, remainder in the numerator part and divisor as the denominator.
Therefor you'll have 7 1/7 as a mixed number.
I guess your question is
<span>Sean read 15 of a book in 112 hours. How long will it take Sean to read 12 of this book?
15 books ........112 hours
12 books..........? hours
12 x 112 / 15 = 89.6 hours.
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