Thursday

July 24, 2014

July 24, 2014

Posted by **curtis** on Sunday, October 30, 2011 at 5:22pm.

- Math -
**Steve**, Monday, October 31, 2011 at 5:30amJust take each sentence and write it symbols.

d = n-1

n = 2 + 2q

10d + 5n + 25q = 570

substitute for d:

10(n-1) + 5n + 25q = 570

10n - 10 + 5n + 25q = 570

15n + 25q = 580

substitute for n:

15(2+2q) + 25q = 580

30 + 30q + 25q = 580

55q = 550

q = 10

so, n = 2+2*10 = 22

so, d = 22-1 = 21

10(21) + 5(22) + 10(25) = 210 + 110 + 250 = 5.70

**Related Questions**

math - can someone help explain how to do this? allen has nickels dimes and ...

math help - A charity organization is collecting change to raise monay. They ...

MATH HELP - A charity organization is collecting change to raise monay. They ...

math - A charity organization is collecting change to raise monay. They have ...

math - A charity organization is collecting change to raise monay. They have ...

Math - In a collection of nickels, dimes, and quarters worth &6.90, the ratio of...

MATH - a purse contains $1.35 in quarters nickels and dimes There are 3 times as...

maths - Class 5G is having a pizza party. Mrs Baker asked all the children to ...

Algebra - Kevin has $6.45 in coins in his cash box. The numbers of quarters is ...

Math - sally has twice as many dimes as nickels. the total value is $3.50. how ...