Answer:
12
Step-by-step explanation:
Givens
Harpreet = x + 3
Sukhpreet = x
Komalpreet = 2*(x + 3)
Average Age = 15
Equation
[(x + 3) + x + 2*(x + 3) ] / 3 = 15 Multiply both sides by 3
Solution
3 [(x + 3) + x + 2*(x + 3) ] / 3 = 15 * 3 Combine
[(x + 3) + x + 2*(x + 3) ] = 45 Remove the brackets
x + 3 + x + 2x + 6 = 45 Combine like terms
4x + 9 = 45 Subtract 9 from both sides
4x + 9 - 9 = 45 - 9 Combine
4x = 36 Divide by 4
4x/4 = 36/4
x = 9
Answer
Harpreet is x+ 3 = 9 + 3 = 12
The normal rule to remember is 68-95-99.7, i.e. plus or minus three sigma corresponds to 99.7% of the probability. That leaves 0.3% in the two tails, or 0.15% in the tail above 3 sigma.
Answer: 0.15%
Answer:
10
Step-by-step explanation:
1x2x2.5=5
5/0.5=10
Answer:
The slope is 6/9.
Step-by-step explanation:
The equation used to calculate the slope from two points is:
(y2 - y1) ÷ (x2 - x1) =
It <u>doesn't matter</u> which x or y you choose to be first since <u>you'll get the same answer</u>. (For me, it's easier to go with the bigger number as the second x & y, so that's what I did.)
(-1 - -7) ÷ (4 - -5) = <u>6/9</u>
The third one is a point with the first equation.
I had to simplify the second equation.
It simplified to,
The second one with the above is didn't go through so I'd say no solution.
