Answer:
In x dollars,
number of book that can be bought = 1
So, In 1 dollar,
number of books that can be bought = 1/x
Hence in 40 dollars,
number of books that can be bought = 40/x
Answer:
x = 15
Step-by-step explanation:
x/3/9 = 5/9
x : 3 : 9 = 5/9
x×1/3×1/9 = 5/9
x/27 = 5/9
x = 5×27/9
x = 5×3
x = 15
The outer exponent is 4 so there will be 5 terms all together. By rules of exponents
C(4,0)(3^4)(2^0)(x^8)(y^0) + C(4,1)(3^3)(2^1)(x^6)(y^3) + C(4,2)(3^2)(2^2)(x^4)(y^6) + C(4,3)(3^1)(2^3)(x^2)(y^9) + C(4,4)(3^0)(2^4)(x^0)(y^12)
The coefficient of the 3rd term: C(4,2)(3^2)(2^2) = 6 x 9 x 4 = 216
Answer:
V = 10 x 9 x (1/3)
V = 30 in³
Step-by-step explanation:
Answer:
The lower confidence limit of 99% confidence interval for the mean breaking strength of the briefcases produced today would be equal to 331.09 pounds.
Step-by-step explanation:
Lower limit of confidence interval = mean - Error margin (E)
mean = 341.0 pounds
sd = 21.5 pounds
n = 35
degree of freedom = n - 1 = 35 - 1 = 34
confidence level = 99%
t-value corresponding to 34 degrees of freedom and 99% confidence level is 2.728
E = t × sd/√n = 2.728 × 21.5/√35 = 9.91 pounds
Lower limit = 341.0 - 9.91 = 331.09 pounds
