Answer:
c = 72
Step-by-step explanation:
multiply both sides of the equation by 8 to eliminate the fraction
c = 8 × 9 = 72
note that = 9
Jada’s babysitter is four times Jada’s current age. In 5 years, Jada will be half her babysitter’s current age.
1 answer:
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Answer: 1.25
Step-by-step explanation:
Given: A college-entrance exam is designed so that scores are normally distributed with a mean = 500 and a standard deviation
= 100.
A z-score measures how many standard deviations a given measurement deviates from the mean.
Let Y be a random variable that denotes the scores in the exam.
Formula for z-score =
Z-score =
⇒ Z-score =
⇒Z-score =1.25
Therefore , the required z-score = 1.25