User Account

All Pages

How many of each coin do i have

Assignment Help Algebra
Reference no: EM131026600

Can I please find out what I am doing incorrectly with the following problem?
"I have seventy five coins in my pocket made up of quarters and dimes. If the total value of the coins is $12.45, how many of each coin do I have?"

q + d = 75 Let q represent quarters
(0.25)q + (0.10)d = 12.45 Let s represent dimes

q = 75 - d

(0.25)(75-d) + (0.10)d = 12.45 q + d = 75
18.75 + 0.25d + 0.10d = 12.45 q + (18) = 75
0.25d + 0.10d = 12.45 - 18.75 q = 75 - 18
0.35d = 6.3 q = 57
d = 18

0.25(57) + 0.10(18) = 12.45
14.25 + 1.8 = 16.05

Reference no: EM131026600

Questions Cloud

Write balanced chemical equation for chemical transformation : The Ge is converted to GeCl4 by treatment with Cl2 and then purified by distillation; GeCl4 is then hydrolyzed in water to GeO2 and reduced to the elemental form with H2. The element is then zone refined. Write a balanced chemical equation for eac..
What are the reasons not to conduct training : What are the reasons to conduct training on this need? What are the reasons not to conduct training? What would happen if you fail to conduct training when it is necessary?
What is gauss elimination explain it in detail : What computer applications can be used to graph systems of equations? In what circumstances does it make more sense to graph a system than to use the substitution, elimination, or matrix methods?
Propose reasonable structures for these ions : The P4,P4,O6,and P4O10 molecules have a common structural feature of four P atoms arranged in a tetrahedron (Figures). Does this mean that the bonding between the P atoms is the same in all these cases? Explain.
How many of each coin do i have : "I have seventy five coins in my pocket made up of quarters and dimes. If the total value of the coins is $12.45, how many of each coin do I have?"
How much heat is produced in preparing a mole : The synthesis of H2SO4 consists of three main chemical processes: (1) oxidation of S to SO2, (2) oxidation of SO2 to SO3, (3) the dissolving of SO3 in H2SO4 and its reaction with water to form H2SO4. If the third process produces 130kJ/mol, how mu..
Write the balanced equation for this reaction : Although the ClO4- and lO4- ions have been known for a long time BrO4-, was not synthesized until 1965. The ion was synthesized by oxidizing the bromate ion with xenon difluoride, producing xenon, hydrofluoric acid, and the perbromate ion. Write the ..
Find the heights of the window : The combined areas of the shutters total the same as the area of the window. Find the heights of the window.
March for the drying department : In the Finishing Department, the dried paper is coated, cut, and spooled onto reels. The company uses the weighted-average method in its process costing system. Data for March for the Drying Department follow:

Reviews

Write a Review

Algebra Questions & Answers

  Find the percent of change when the price of a radio

1. find the percent of change when the price of a radio changes from 40.00 to 44.00.12 10 36.4 402. find the percent of

  Find the solution for y

Find the solution for y

  What is the limiting amount of c after a long time

How much of chemicals A and B remain after a long time?

  Solve the linear equations problem

Solve the linear equations problem

  Compute the age of the older friend

Compute the age of the older friend.

  How far is sam past the finish line when his car stops

Who wins the race? How far is Bob past the finish line when his car stops? How far is Sam past the finish line when his car stops?

  How can polynomial identities be proven

How can polynomial identities be proven? What can polynomial identities apply to beyond just polynomials? Prove that it is true through an algebraic proof, identifying each step.

  Show that e is a closed subspace of r^n

Let A be a real n x n matrix. Show that a linear subspace E of R^n is A-invariant if and only if E is e^{tA} -invariant for all t in R, where e^{tA} is the exponential matrix associated to A.

  How is this system different from the rest

Write this system as an augmented matrix. Use your calculator and ¯nd the row echelon form and the reduced row echelon form. How is this system di®erent than the ¯rst? What row operation would move the augmented matrix from part (a) to this one?

  Find the solution of the equations

find the solution of the equations

  Solar energy generated

In a certain year, solar and wind energy generation totaled 1000 24 trillion BTUs. Wind generated 52 trillion BTUs more than eight times that generated by solar energy. How much was generated by each source?

  What is the limit of c as n increases without bound

Find the value of c when n = 5, n = 6. Graph c as a function of n. What is the limit of c as n increases without bound?

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +1-415-670-9521

Phone: +1-415-670-9521

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd