Answer:
8x-9y-2
Step-by-step explanation:
We just add like terms:
Put them all together to give you:

The Scientific notation for above value is :

N=8+d
10d+5n=145
divide 2nd equaiton by 5 to make nicer and easier
2d+n=29
subsitute 8+d for n in 2nd equation
2d+8+d=29
3d+8=29
minus 8 both sides
3d=21
divide by 3
d=7
sub back
n=8+d
n=8+7
n=15
15 nickles and 7 dimes
Answer:
Just took the quiz, answer is 6.
Step-by-step explanation:
it is 17371.8 I put it into a calculator and got it haha