We will represent everything in cents
nickles are worth 5 cents and dimes are 10 cents
n=number of nickles
d=number of dimes

60 total coins
n+d=60

total is 430 cents

5n+10d=430
divide both sides by 5
n+2d=86

we gots

n+d=60 and
n+2d=86
eliminate

multiply first equation by -1 and add to 2nd equation

-n-d=-60
<u>n+2d=86 +</u>
0n+1d=26

d=26

so

n+d=60
n+26=60
n=34

34 nickles and 26 dimes

6 0

3 years ago

The balance of Susu’s savings account can be represented by the variable b. The inequality describing her balance is b greater-t

Wittaler [7]

B < 30 I think if not then the < is reversed

8 0

4 years ago

55.72 how many times greater is the digit in the tens place than the digit in the ones place

Zinaida [17]

It's ten times as great ... just like 10 is ten times as great as 1.

5 0

4 years ago

Line AB contains points A (0, 1) and B (1, 5). The slope of line AB is

hammer [34]

Slope = 1-5/0-1 = 4
the answer is 4

6 0

3 years ago