Answer:
y = -3x - 8
Step-by-step explanation:
Use point slope formula
(y - 4) = -3(x - (-4))
y = -3x - 12 + 4
y = -3x - 8
Answer:
B.
x > 24
Step-by-step explanation:
2x > 228 - 180
2x > 48
x > 24
Answer:
B.
x > 24
Answer:
0.68268
Step-by-step explanation:
We solve using z score
z = (x-μ)/σ, where
x is the raw score
μ is the population mean
σ is the population standard deviation.
For x = 85
z = 85 - 105/20
z = -1
Probability value from Z-Table:
P(x = 85) = 0.15866
For x = 125
z = 125 - 105/20
z = 1
Probabilty value from Z-Table:
P(x = 125) = 0.84134
The probability that a randomly selected adult has an IQ between 85 and 125 is calculated as:
P(x = 125) - P(x = 85)
= 0.84134 - 0.15866
= 0.68268
121^4-49
(11^2+7)(11^2-7) 1. 121. 49
11. × 11. 7 × 7