Sorry we need more information
Answer:
Step-by-step explanation:
This is an arithmetic sequence
a1 = -2
Difference = 2nd term - first term
![=\frac{-5}{4}-[-2]\\\\=\frac{-5}{4}+2\\\\=\frac{-5}{4}+\frac{2*4}{1*4}\\\\=\frac{-5+8}{4}=\frac{3}{4}](https://tex.z-dn.net/?f=%3D%5Cfrac%7B-5%7D%7B4%7D-%5B-2%5D%5C%5C%5C%5C%3D%5Cfrac%7B-5%7D%7B4%7D%2B2%5C%5C%5C%5C%3D%5Cfrac%7B-5%7D%7B4%7D%2B%5Cfrac%7B2%2A4%7D%7B1%2A4%7D%5C%5C%5C%5C%3D%5Cfrac%7B-5%2B8%7D%7B4%7D%3D%5Cfrac%7B3%7D%7B4%7D)
Answer:
One plane has a speed of 450 km/h and the other has a speed of 900 km/h.
Step-by-step explanation:
I am going to say that:
The speed of the first plane is x.
The speed of the second plane is y.
One plane is flying at twice the speed of the other.
I will say that y = 2x. We could also say that x = 2y.
Two airplanes leave an airport at the same time, flying in the same direction
They fly in the same direction, so their relative speed(difference) at the end of each hour is y - x = 2x - x = x.
If after 4 hours they are 1800 km apart, find the speed of each plane
After 1 hour, they will be x km apart. After 4, 1800. So
1 hour - x km apart
4 hours - 1800 km apart
4x = 1800
x = 1800/4
x = 450
2x = 2*450 = 900
One plane has a speed of 450 km/h and the other has a speed of 900 km/h.
AWNER is 6
Hope it helps u
Answer:
Let's start with part B. if it was originally 10 cm tall and it goes up 0.5 cm. each day, then we know that to go up one cm it needs two days. With that information we can say that 8*2 = 16. So it needs 17 days to go up 8.5 cm which would make it 18.5 cm tall.
Step-by-step explanation:
f(x) = 0.5x + 10
0.5x + 10 = 18.5
0.5x = 18.5 - 10
0.5x = 8.5
x = 8.5/0.5
x = 17 days
