Answer:
30 yrs
Step-by-step explanation:
SI = PRT/100
T = I × 100/PR
= 9000×100/1500×20
= 900000/30000
= 30 yrs
Answer:
2nd one..
Step-by-step explanation:
but although all are wrongmm barnotation is not used
-5/16
Our choices:-
A.-3/8
B.-11/12
C.-1/4
<span> D.-1/8
</span>
Let us get all of them with a LCD
-1*2 = -2
8*2 = 16
-2/16 is not bigger than -5/16
-11/12 is bigger than -5/16 because half of 16 is 8.
-1*4 = -4
4*4= 16
-4/16 is not bigger than -5/16
-1/8 is smaller than -5/16
Final answer: -11/12 is the only fraction bigger than -5/16
Answer: ![2.5=\frac{n}{35}+\frac{n}{45}](https://tex.z-dn.net/?f=2.5%3D%5Cfrac%7Bn%7D%7B35%7D%2B%5Cfrac%7Bn%7D%7B45%7D)
Step-by-step explanation:
1. To find the equation asked, you must add the times:
![t_{total}=t_1+t_2](https://tex.z-dn.net/?f=t_%7Btotal%7D%3Dt_1%2Bt_2)
Where
is the time takes Lilly in her path to work and
is the time takes Lilly in her path to home.
2. You must use the following formula of speed and solve for the time
![V=\frac{n}{t}](https://tex.z-dn.net/?f=V%3D%5Cfrac%7Bn%7D%7Bt%7D)
Where n is the distance, V is the speed and t is the time.
3. You know that Lilly takes a train each day to work that averages 35 miles per hour, then, you can write the following expression:
![35=\frac{n}{t_1}\\t_1=\frac{n}{35}](https://tex.z-dn.net/?f=35%3D%5Cfrac%7Bn%7D%7Bt_1%7D%5C%5Ct_1%3D%5Cfrac%7Bn%7D%7B35%7D)
4. And her train ride follows the same path at 45 miles per hour:
![45=\frac{n}{t_2}\\t_2=\frac{n}{45}](https://tex.z-dn.net/?f=45%3D%5Cfrac%7Bn%7D%7Bt_2%7D%5C%5Ct_2%3D%5Cfrac%7Bn%7D%7B45%7D)
5. Then, you obtain the following equation:
![2.5=\frac{n}{35}+\frac{n}{45}](https://tex.z-dn.net/?f=2.5%3D%5Cfrac%7Bn%7D%7B35%7D%2B%5Cfrac%7Bn%7D%7B45%7D)
Answer:
41 people attended the party
Step-by-step explanation:
![1120 = 20x + 300](https://tex.z-dn.net/?f=1120%20%3D%2020x%20%2B%20300)
![1120 - 300 = 20x](https://tex.z-dn.net/?f=1120%20-%20300%20%3D%2020x)
![820 = 20x](https://tex.z-dn.net/?f=820%20%3D%2020x)
![x = 41](https://tex.z-dn.net/?f=x%20%3D%2041)