Answer:
Step-by-step explanation:
(2, -1) & (-1, -2)
(-2+1)/(-1-2)= -1/-3= 1/3 is the slope of the line
Answer: -4/3
The slope of the given line is 3/4. It's simply the value in front of the x. To be more specific, the equation given to us is in the form y = mx+b where m = 3/4 is the slope.
Flip the fraction and then the sign
flip the fraction: 3/4 ----> 4/3
Then flip the sign: 4/3 ----> -4/3
In other words, we take the negative reciprocal
Notice how the original slope 3/4 and the perpendicular slope -4/3 multiply to -1
A1 x=5
2 x=7
3 t=3
B1 x=3
2 x=2
3 z= √6
Answer:
(a) P(sum is 8) = 1/20
(b) P(sum is 6 or less) = 3/10
(c) P(first number is 2 or the sum is 5) = 3/10
Step-by-step explanation:
(a)
The probability (P) of having 8 as the sum of the numbers is;
P(3 and 5) = 1/5 × 1/4 = 1/20
(b) Probability that the sum of the numbers is 6 or less.
P(sum is 6) = P(2 and 4) or P(1 and 5) = 1/20 + 1/20 = 1/10
P(sum is less than 6) = P(1 and 4) or P(1 and 3) or P(1 and 2) or P(2 and 3) = 1/20 × 4 = 1/5
P(sum is 6 or less) = 1/10 + 1/5 = 3/10
(c) The first number is 2 or the sum is 5
P(first number is 2) = 1 - P(first number is 1) - P(first number is 3) - P(first number is 4) - P(first number is 5) = 1 - 4(1/5) = 1/5
P(sum is 5) = P(1 and 4) or P(2 and 3) = 1/20 + 1/20 = 1/10
P(first number is 2 or sum is 5) = 1/5 + 1/10 = 3/10