15 is the answer . What you do is unsimplify 2/5 which equals .4 . Then divide 6 and .4 which is 15
Answer: 
Step-by-step explanation:
Hypothesis testing
For this problem, we need to use the t-student distribution to make inference about the data. We calculate the t-statistics as below:
Using a t-statistics table, or using the function TDIST in Microsoft Excel with 
with two-tailed distribution, we obtain .
Answer:
32.7°
Step-by-step explanation:
Use the formula for law of cosines, for this question we need so solve for angle B, so use...
b² = a² + c² - 2(a)(c)Cos B
We are given a, b, and c, so plug them in...
55² = 90² + 50² - 2(90)(50)Cos B
Now simplify...
3,025 = 8100 + 2500 - (9000)Cos B
-7,575 = -(9000)Cos B (subtract 8100 and 2500 from both sides)
0.841666667 = Cos B (divide both sides by -9000)
Cos^(-1) 0.841666667 = B (use cosine inverse function on calculator)
32.68346376° = B
32.7° = B
Make sure they have common denominators.
-2/3 x (2/2) = -4/6
-4/6 + -4/6 = -8/6
-8/6 = - 1 2/6
-1 2/6 or -1 1/3 simplified, is your answer
hope this helps
Answer:
12.05%
Step-by-step explanation:
First, converting R percent to r a decimal
r = R/100 = 12.050249999994%/100 = 0.12050249999994 per year,
then, solving our equation
I = 2000 × 0.12050249999994 × 0.666666666667 = 160.67
I = $ 160.67
The simple interest accumulated
on a principal of $ 2,000.00
at a rate of 12.050249999994% per year
for 0.666666666667 years is $ 160.67.
