The books are $5, and the magazines are $10. I’m not sure which way you want it explained but since magazines are twice the price of books, you can solve the equation 3b + 2b = 25. This gives you b=5 which you just multiply by 2 giving you the price of a magazine.
Answer:
the answer is 11/21 or 0.523809524
hope this helped
Step-by-step explanation:
Answer: 7 ½
Step-by-step explanation:
45 ÷ 6 = 7.5
7.5 as a fraction is 7 ½
<h2>$40,000</h2>
Step-by-step explanation:
Andrew paid 30% in taxes, which means he has 70% remaining
30% Cash Prize + 70% Cash Prize = 100% Cash Prize
If C = Original Cash Price
Remaining Cash = 70% x C = $28,000
C = $28,000 / 70% = 28000/0.7 = $40,000
Answer:
(B) 0.74 + or - 2.797 × 0.22/√25
Step-by-step explanation:
Confidence Interval = mean + or - t × sd/√n
mean = 0.74 hours
sd = 0.22 hours
n = 25
degree of freedom = n - 1 = 25 - 1 = 24
Confidence level = 99%
t-value corresponding to 24 degrees of freedom and 99% confidence level is 2.797
Confidence Interval = 0.74 + or - 2.797 × 0.22/√25
