The sides of the isosceles triangle are two equal legs and the remaining side is called base.
Answer:
She needs to invest $13,636.36 right now
Step-by-step explanation:
This is a simple interest problem.
The simple interest formula is given by:
![E = P*I*t](https://tex.z-dn.net/?f=E%20%3D%20P%2AI%2At)
In which E is the amount of interest earned, P is the principal(the initial amount of money), I is the interest rate(yearly, as a decimal) and t is the time.
After t years, the total amount of money is:
![T = E + P](https://tex.z-dn.net/?f=T%20%3D%20E%20%2B%20P)
In this question:
In 15 years, so ![t = 15](https://tex.z-dn.net/?f=t%20%3D%2015)
She wants to have $30,000, so ![T = 30000](https://tex.z-dn.net/?f=T%20%3D%2030000)
8% interest, so ![I = 0.08](https://tex.z-dn.net/?f=I%20%3D%200.08)
We have to find P.
![T = E + P](https://tex.z-dn.net/?f=T%20%3D%20E%20%2B%20P)
![30000 = E + P](https://tex.z-dn.net/?f=30000%20%3D%20E%20%2B%20P)
![E = 30000 - P](https://tex.z-dn.net/?f=E%20%3D%2030000%20-%20P)
Replacing:
![E = P*I*t](https://tex.z-dn.net/?f=E%20%3D%20P%2AI%2At)
![30000 - P = P*0.08*15](https://tex.z-dn.net/?f=30000%20-%20P%20%3D%20P%2A0.08%2A15)
![30000 - P = 1.2P](https://tex.z-dn.net/?f=30000%20-%20P%20%3D%201.2P)
![2.2P = 30000](https://tex.z-dn.net/?f=2.2P%20%3D%2030000)
![P = \frac{30000}{2.2}](https://tex.z-dn.net/?f=P%20%3D%20%5Cfrac%7B30000%7D%7B2.2%7D)
![P = 13636.36](https://tex.z-dn.net/?f=P%20%3D%2013636.36)
She needs to invest $13,636.36 right now
Answer:
2.5 times 60 equals 150. 150-78 equals 72. So the answer is 72.
Step-by-step explanation:
Hope this helps.
The answers are D, D, 93, A, A.
We are given that Donna knit a total of 12 blankets.
She took 4 months in doing it.
To find the number of blankets in 1 month, take ratio of number of blankets to number of months.
![\frac{number \: of \: blnkets}{number \: of \: months} \\ \\ = \frac{12 \: blankets}{4 \: months} \\ \\ = \frac{3 \: blankets}{1 \: months}](https://tex.z-dn.net/?f=%20%5Cfrac%7Bnumber%20%5C%3A%20of%20%5C%3A%20blnkets%7D%7Bnumber%20%5C%3A%20of%20%5C%3A%20months%7D%20%20%5C%5C%20%20%5C%5C%20%20%3D%20%20%5Cfrac%7B12%20%5C%3A%20blankets%7D%7B4%20%5C%3A%20months%7D%20%20%5C%5C%20%20%5C%5C%20%20%3D%20%20%5Cfrac%7B3%20%5C%3A%20blankets%7D%7B1%20%5C%3A%20months%7D%20)
Thus, she knit 3 blankets in 1 months