Answer:
Incomplete question
Step-by-step explanation:
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
Cecilio tiene "x" años y Jonathan tiene "y" años.
Tres veces la edad de Cecilio es 3x y 3x es 48 años mas que "y".
3x = y + 48
Jonathan tiene un tercio de la edad the Cecilio.
y = x/3
3x = y + 48 se sustituye x/3 por y
3x = x/3 + 48
3x - x/3 = 48
9x/3 - x/3 = 48
8x/3 = 48
x = 48 * 3/8
x = 18
Cecilio tiene 18 años.
y = x/3 = 18/3 = 6
Jonathan tiene 6 años.
Answer:
6 weeks
Step-by-step explanation:
6*5=30
100+30=130
20*6=120
120+10=130
130=130
Solution: x + 50 = 180
X = 130