Answer:
48 times
Step-by-step explanation:
From the above question, we know that:
2 times = 1 kg of fertilizer
A crop requires 24 kg of fertilizer
Hence:
1 kg of fertilizer = 2 times
24 kg of fertilizer = x
Cross Multiply
x = 24 kg × 2 times/1 kg
x = 48 times
She need to fill the flask 48 times to make the required amount of fertilizer for the crop
Permutation: In a race of 10 students, find the number of ways students can finish 1st, 2nd, and 3rd. In this case the order matters, so it is a permutation.
10 x 9 x 8 = 720 ways
Combination: In a class of 10 students, find the number of ways a group of 3 students can be selected to win a prize. In this case the order doesn't matter, so it's a combination.
10 x 9 x 8 / (3 x 2 x 1) = 120 ways
(1/2*x)-7
1/2x-7
you can only simplify this not completely solve it
Answer:
a³+2a³+5
Step-by-step explanation:
7a³+14a+12+{-6a³}+12a²-7
=<u>7a³-6a³</u>+<u>14a+12a²</u>+<u>12-7</u>
=a³+2a³+5
Answer:
-7
Step-by-step explanation:
AB = AC + BC
4 = x + 2 + 9
x = - 7