Answer:
A) y=-4/5
Step-by-step explanation:
When you have two fractions equal to one another, the easiest thing is often to cross multiply. To do this, multiply the top of the left fraction by the bottom of the right fraction, and then multiply the bottom of the left fraction by the top of the right side and put them equal to eachother:
Knowing this, and some algebra, we can solve the question:
(7y+4)(3)=(y+2)(-4)
21y+12=-4y-8
21y+4y=-8-12
25y=-20
y=-4/5
Answer:
21.5%
Step-by-step explanation:
volume of cube: 36x36x36
volume of cylinder: πx18²x36
Cylinder percentage: (πx18²x36) / 36x36x36 = π / 4 = 0.785
percentage of empty space: 1 - 0.785 = 0.215 (21.5%)
Answer:
B. 67.23236 x 107
Step-by-step explanation:
i dont really know how to explain it but i know the answer
Answer:
4.8
. i think i am not sure
Step-by-step explanation:
Answer:
m∠B = 141°
Step-by-step explanation:
sides of polygon (n) = 7
sum of angles of polygon = {(n - 2) * 180°}
= {(7 -2)*180°}
= 5* 180°
= 900°
Now,
m∠B = 900° - 148° - 142° - 130° - 129° - 120° - 90°
m∠B = 141°
