Answer: 2nd one.
Step-by-step explanation:
Answer:
59.85
Step-by-step explanation:
The scores on a mathematics exam have a mean of 70 and a stadard deviation of 7. Find the x-value that corresponds to the z-score -1.45.
We solve the above question using z score formula
z = (x-μ)/σ, where
x is the raw score
μ is the population mean = 70
σ is the population standard deviation = 7
z = -1.45
Hence:
-1.45 = x - 70/7
Cross Multiply
-1.45 × 7 = x - 70
-10.15 = x - 70
x = -10.15 + 70
x = 59.85
Answer:
The number is 20.
Step-by-step explanation:
To solve this, first take the words and turn into an equation.
3/5x + 8 = x
Now we can solve for x using the order of operations
3/5x + 8 = x
8 = 2/5x
20 = x
Simple it says you use 33 drops of yellow originally and 44 drops of blue it appears that each drops are 11 drops lesser (from blue to yellow). Therefore, add 11 to 1212 and you get your answer.
Step-by-step explanation:
Chord AB and Chord CD are equidistant from the center of the circle.
