1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Eduardwww [97]
3 years ago
14

Sam has $2.25 in quarters and dimes, and the total number of coins is 12. How many quarters and how many dimes?

Mathematics
2 answers:
a_sh-v [17]3 years ago
8 0
N₁*$0.10 + n₂*$0.25 = $2.25

n₁ + n₂ = 12

-----------

This means that:

n₁ = 12 - n₂

And:

(12 - n₂)*$0.10 + n₂*$0.25 = $2.25

12*$0.10 - n₂*$0.10 + n₂*$0.25 = $2.25

$1.20 + n₂*$0.05*(5-2) = $2.25

$1.20 + n₂*$0.05*3 = $2.25

$1.20 + n₂*$0.15 = $2.25

n₂*$0.15 = $2.25 - $1.20

n₂*$0.15 = $1.05

n₂ = ($1.05)/($0.15)

n₂ = 7

If n₂ = 7:

n₁ + 7 = 12

Therefore, n₁ = 5.

---------

Answer:

5 dimes and 7 quarters.
azamat3 years ago
7 0
The accurate answer would be 5 dimes and 7 quarters and if you add them up will equal 12 coins in total
You might be interested in
Jace and Lianna each baked a loaf of bread. jace cut his loaf into halves and lianna cut her loaf into thirds. Jace says they ca
Viktor [21]

Answer:

Jace is correct they can use their loaves of bread to show 1/2 is less than 1/3. Because they have 2 loaves of bread

7 0
1 year ago
Can you solve 5a please greatly appreciated.
timurjin [86]
Part I)
 
The module of vector AB is given by:
 lABl = root ((- 3) ^ 2 + (4) ^ 2)
 lABl = root (9 + 16)
 lABl = root (25)
 lABl = 5

 Part (ii)
 The module of the EF vector is given by:
 lEFl = root ((5) ^ 2 + (e) ^ 2)
 We have to:
 lEFl = 3lABl
 Thus:
 root ((5) ^ 2 + (e) ^ 2) = 3 * (5)
 root ((5) ^ 2 + (e) ^ 2) = 15
 Clearing e have:
 (5) ^ 2 + (e) ^ 2 = 15 ^ 2
 (e) ^ 2 = 15 ^ 2 - 5 ^ 2
 e = root (200)
 e = root (2 * 100)
 e = 10 * root (2)
3 0
3 years ago
Write an equation of the line that passes through the points.<br><br> (0,1),(−2,−5)
Arada [10]

Answer:

y=4/-2

Step-by-step explanation:

I think that is the answer

6 0
2 years ago
Read 2 more answers
AD = x + 3 and DM = 2x - 1. Find AM.
IgorC [24]
I think it might be 7 don't know what answers you may have but its a guess
6 0
3 years ago
2(x-5)+3x=x+6<br> A)x=0<br> B)x=4<br> C)x=-1<br> D)x=2
alexgriva [62]
The answer would be letter B
4 0
3 years ago
Other questions:
  • Laurence started with 30 pieces of candy and gave away x pieces. Beatriz started with 70 pieces of candy and gave away five time
    8·1 answer
  • When do you switch the inequality symbol when solving two- step equations?
    10·1 answer
  • Solve the following problem:<br> 2 6/10 = 91/x
    12·2 answers
  • 9-3÷1/3+1=<br><br> PLEASE HELP!!
    10·2 answers
  • Calculate the mean, median, and mode for the set 7, 9, 8, 8, 10, 9, 8, 7, 8, 6, 9, 5, 6, 8, 9, 7, 7, 8, 10, 8 please answer asap
    5·2 answers
  • 35 points!!!
    14·1 answer
  • Jose bought 1.5 pounds of apples for $3.60. How much would 3/4 of a pound of apples cost?
    15·2 answers
  • Maximizing revenue. Edwards University wants to determine what price to charge for tickets to football games. At a price of 518
    6·1 answer
  • 6x=1/2(2X +7)<br> Solve for x
    11·1 answer
  • Find the circumference of the circle. Use 3.14 for . Round to the nearest hundredth,.12.5 in. The circumference of the circle is
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!