Answer:
50,020 revs to nearest rev.
Step-by-step explanation:
r = 1/2 * diameter
Circumference of the wheel = 2 pi r
= 2 * pi * 1/2 * 77
= 77pi cms
1 km = 1000 * 100 cms so
The number of revolutions = (121 * 100 * 1000) / 77pi
= 50,020 revs to nearest rev.
Answer:
Okay you have isolate a variable. As long as you perform the some operation on both sides the equations holds true. So I'll multiply the bottom one by three. 3x - 3y = 27. Now if I add the equations together I get 5x is 35 or x is 7. Then plug it back into either equation. 7 minus what is 9? -2. Y is -2
Answer:
∠ S = 151°
Step-by-step explanation:
The sum of the interior angles of a polygon is
sum = 180° ( n - 2) ← n is the number of sides
Here n = 5, thus
sum = 180° × 3 = 540
Sum the interior angles and equate to 540
10x - 3 + 5x + 2 + 7x - 11 + 13x - 31 + 8x - 19 = 540, that is
43x - 62 = 540 ( add 62 to both sides )
43x = 602 ( divide both sides by 43 )
x = 14
Thus
∠ S = 13x - 31 = 13(14) - 31 = 182 - 31 = 151°
Alright let’s see the question