chamkh8707 chamkh8707

25-12-2017
Mathematics

contestada

Ron has 13 coins with a total value of $2.25. the coins are nickels and quarters. how many of each coin does he have

Respuesta :

25-12-2017

8 quarters = $2.00
5 nickles = $0.25

Total ... 13 coins = $2.25

Answer Link

Аноним Аноним

25-12-2017

n-nickels, q-quarters

n+q=13=>n=13-q

0.25q+0.05n=2.25
0.25q+0.05(13-q)=2.25
0.25q+0.65-0.05q=2.25
0.20q=2.25-0.65
0.20q=1.6
q=1.6:0.2
q=8
n=13-8
n=5

Answer Link

Otras preguntas

Finish these 4 sentences, please 1. The decisions of government leaders directly affects the economy because 2. The difference in taxes at the local, state an

Which of the following statements about social identities is true?a. A person's social identities fall along a continuum of privilege and independence.b. The so

The high stakes testing required in the nclb act was found to be a very effective form of assessment. A) True B) False

Choose the correct code assignment (ICD-10-CM and ICD-10-PCS) for the following scenario: 65-year-old with Viral carditis. A right and left diagnostic cardiac c

Many people disagree about the appropriate age to allow children and young adults to use social media. Write an essay that argues your viewpoint about the issue

Which fuel source gives energy to all the activities of cells in all organisms on earth?a. glucoseb. DNAc. ATPd. protein

Which number is located of the Indian Ocean?

Given an activity's optimistic, most likely, and pessimistic time estimates of 4, 6, and 14 days respectively, compute the PERT expected activity time for this

Which of the following explains why it is important for engineers to recognize and respect cultures and perspectives that are different from their own?

Explain how a deletion mutation leading to a modification of the 3' utr on the cacna1s mra could lead to hypokalemic periodic paralysis without changing the str