8 (D)
12(C) (Considering it is (square root of x) - 87, and not square root of (x-87).)
18(C) (Again, same as above. You need to write in parentheses, if applicable.)
13 I can't understand the question. Am I missing an equation?
Best answer me please.
Answer:
True False False in that order
Step-by-step explanation:
Unit rate means how much does it cost for 1 unit
2.64 for 12 pencils
find 1 pencil
divide both sides by 12
0.22 for 1 pencil
0.22 per pencil
Using z-scores for 130 and 140 hours, and a standard normal distribution table, the cumulative probabilities for 130 and 140 hours are 0.254 and 0.673 respectively.
The required probability is 0.673 - 0.254 = 0.42 to 2 d.p.
Answer:
In a herd no. of Cattle are: x
The ratio of bulls to cows is 1:6
\frac{bulls}{cows} = \frac{1}{6}
6 bulls = 1 cows
bulls \: + cows = x
bulls + 6 \: bulls \: = x
7bulls = x