Answer:
Pretty sure the first one is no cuz ive never seen a function curved like that
Step-by-step explanation:
Answer:
Perimeter of PQR = 37 units (Approx.)
Step-by-step explanation:
Using graph;
Coordinate of P = (-2 , -4)
Coordinate of Q = (16 , -4)
Coordinate of R = (7 , -7)
Find:
Perimeter of PQR
Computation:
Distance between two point = √(x1 - x2)² + (y1 - y2)²
Distance between PQ = √(-2 - 16)² + (-4 - 4)²
Distance between PQ = 18 unit
Distance between QR = √(16 - 7)² + (-4 + 7)²
Distance between QR = √81 + 9
Distance between QR = 9.48 unit (Approx.)
Distance between RP = √(7 + 2)² + (-7 + 4)²
Distance between RP = √81 + 9
Distance between RP = 9.48 unit (Approx.)
Perimeter of PQR = PQ + QR + RP
Perimeter of PQR = 18 + 9.48 + 9.48
Perimeter of PQR = 36.96
Perimeter of PQR = 37 units (Approx.)
Answer: B
Step-by-step explanation: the similar paper appears to be 2 times larger then Fransicos since 38/19=2, so I did 14 1/3*2 which equals 28 2/3, so the answer is B
Answer: a) 0.9332, b) 0.8944
Step-by-step explanation: the probability value attached to a z score is gotten by using a z distribution table.
The z score is gotten by making use of the formulae below
Z = x - u / σ
Where x = sample mean, u = population mean and σ = population standard deviation.
a)
For our question, u = 38, σ = 12, we are to look for the z score at z ≤ 56, that's x = 56
By substituting the parameters, we have that
z ≤ 56 = 56 - 38/ 12
z ≤ 56 = 18/12
z ≤ 56 = 1.5
To get the probabilistic value, we check the normal distribution table.
The table I'm using will be giving me probabilistic value towards the left of the area.
From the table, p ( z ≤ 56) = 0.9332.
b)
Z >23 = 23 - 38/ 12
Z >23 = - 15/ 12
Z >23 = - 1.25
The probability value of this z score is towards the right of the distribution but the table I'm using is only giving probability values towards the left.
Hence Z >23 = 1 - Z<23
From the table, Z<23 = 0.1056.
Z >23 = 1 - 0.1056
Z >23 = 0.8944
