2 9/12 + 1 4/12 = 3 13/12 = 4 1/12
2 , 9 , 10..... is not an arithmetic series. are you sure it isn't 2, 6 , 10 ? (fourth term 14)
or is it perhaps 2, 9 , 16.... fourth term 23
The SMALLER one has a DIAMETER of 50 meters
circumference = pi x dia
pi x50 =
pi*50 = 157.0796 meters
(25-a) (2a+3)= 40 Multiply it out
50a + 75 - 2a^2-3a = 40 and collect 'like' terms
-2a^2 +47a +35 = 0 use quadratic formula\(x = {-b \pm \sqrt{b^2-4ac} \over 2a}\)
-47+-sqrt(2209+280) / -4 = - 47+-49.8898 /-4 = 24.222 or -.7225
Soil sand content = x * 30% = .3x
Commercial soil sand content = 9 x 18% = 1.62 pounds
resulting mixture is (x+9) * 21%
added together must equal what is put in
.3x + 1.62 = .21 (x+9)
.3x + 1.62 = .21x + 1.89
.09x = .27
x= 3 pounds
tan 73 = height/1200
1200 x tan 73 = height= 3925 ft
F=ma
F=45 kg x .85 m/s^2 = 38.25 kg-m/s^2 = 38.25 N (pushing or pulling......the question states both)
When you get your final result.....hit the = sign one more time to dispaly in Sci Notat
sqrt 250 = sqrt (25 *10) = 5 sqrt 10
Just treat the greater than sign as an equal sign and solve......the sign will REVERSE if you divide or multiply by a NEGATIVE !!!
6>= 6m divide both sides by '6'
1>=m or m <= 1
