Answer:
B. $79.45
Step-by-step explanation:
The equation for simple interest is I = PRT, where I = interest earned, P = principal/amount invested, R = rate as a decimal, and T = time in years.
For this example, we'll calculate the interest earned, then add to the principal to get the total amount of money in her account.
I = (70)(0.045)(3)
I = 9.45
70 + 9.45 = $79.45
Please let me know if you have questions.
Answer:
i beleive thats the identity property, good luck and im sorry if its wrong!
Step-by-step explanation:
Hello,
<span>using double angle formulas:
</span><span>cos 112.5º= cos (225/2)º= -√[(1+cos 225º)/2)];
1+cos 225º=1-√2/2=(2-√2)/2
(1+cos 225º)/2)=(2-√2)/4
-√[(1+cos 225º)/2)]=-√(2-√2)/2
cos 112.5º=-√(2-√2)/2</span>
bye :-)
Answer:
yea
Step-by-step explanation:
