Answer:
see below
Step-by-step explanation:
As with many multiple-choice questions, the appropriate choices can often be determined with a simple test. Here, you only need to look at the values of the constants. (Those are ringed in blue.)
You need to show more numbers after the decimal. Your number stops at the thousandths.
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
Two angles are supplementary to each other if they are congruent. One angle in a linear pair is a right angle if the other angle is the right angle. When one of the angles is a right angle, the two angles become congruent and neighboring.
