Step-by-step explanation:
0.4(5×-15+2.5×+7.5)use 2.5 to multiply the inner bracket
use 0.4 to multiply the equation in the bracket
2x-6+1+3
2×-5+3
2×-2
since there is no" equal to "sign this is the final answer
Answer: rate of train A = 120 km/h
rate of train B = 101 km/h
Step-by-step explanation:
Let x = the speed of train A
Let y = the speed of train B
One train travels 19 km/h slower than the other. Let train B be the slower train. Therefore,
x = y + 19 - - - - - - - - - -1
Recall
Speed = distance/time
Distance = speed × time
If they meet in 3 hours, it means that train A has travelled a distance of
x × 3 = 3x km
And train B has travelled a distance of y × 3 = 3y km
Train A and Train B were 663 kilometers apart when they left their respective destinations. They left at the same time and travelled towards each other. This means that if they meet in 3hours time, they must have covered a total of 663 km. Therefore,
3x + 3y = 663 - - - - - - - - - 2
Substituting x = y + 19 into equation 2, it becomes
3(y + 19) + 3y = 663
3y + 57 + 3y = 663
6y + 57 = 663
6y = 663 - 57 = 606
y = 606/6 = 101 km/h
x = y + 19 = 101 + 19
x = 120 km/h
Answer:
<h3>(x + 4) [(x + 4) - (x - 2)]</h3>
Step-by-step explanation:
![(x+4)^2-(x-2)(x+4)=\boxed{(x+4)}(x+4)-(x-2)\boxed{(x+4)}\\\\=\boxed{(x+4)}[(x+4)-(x-2)]](https://tex.z-dn.net/?f=%28x%2B4%29%5E2-%28x-2%29%28x%2B4%29%3D%5Cboxed%7B%28x%2B4%29%7D%28x%2B4%29-%28x-2%29%5Cboxed%7B%28x%2B4%29%7D%5C%5C%5C%5C%3D%5Cboxed%7B%28x%2B4%29%7D%5B%28x%2B4%29-%28x-2%29%5D)
Add six to each side I think
Answer:
if this is a true or false question it would be false...
Step-by-step explanation:
each bank has different fees and percentage rates, hope this helps
