Answer:
Step-by-step explanation:
A. 3.11
B.7.5
C.6.46
D.133.17
The answer is $328,000. Since the investment is $82,000 every seven years, and there is 28 years. If you divide 28 by 7 you get 4. Then you multiply 82,000 by 4 to get your answer : $328,000.
Answer:
291.87 is a rational number.
Step-by-step explanation:
Rational numbers are those numbers that can be expressed in fractions that is can be written as
where p and q are integers and
.
Consider the given number 291.87
Rewrite the decimal number as a fraction with 1 in the denominator, we get,

Multiply to remove 2 decimal places. Here, you multiply top and bottom by 10² = 100
Thus, the above fraction can be written as,
Thus, 291.87 is a rational number.
His average is 4.2 seconds. hope it helps
Sin A=Cos (90º-A)
Then:
sin 30º=cos (90º-30º)=Cos 60º=1/2
Answer: cos 60º=1/2