Refer to the following normal curve, with mean ? and standard deviation ?.
A data value of 39 corresponds to a standardized value of
A. 1.25.
B. 1.5.
C. -1.25.
D. -1.5.
E. none of these
Answer: C
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Use the formula B = P + Prt, which is used to calculate the balance in an account if simple interest is added to a principal P at an interest rate of r for t years.Suppose that an account earns 4.7% interest and after two years the balance is $4055.00. Find the principal that was invested.
A. $3335.92 B. $4475.72 C. $3706.58 D. $4447.90
Multiply.-0.408 × -0.07
A. 2.856 B. 0.02856 C. 0.0002856 D. 0.002856
Solve the problem.Find the area A of a rectangle with length 2.6 m and width 11.8 m.
A. A = 14.4 m2 B. A = 61.36 m2 C. A = 10.4 m2 D. A = 30.68 m2
Identify p, b, and a. Do not solve for the unknown.What percent of 500 is 160?
A. 160; b; 500 B. 160; 500; a C. p; 500; 160 D. p; 160; 500