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
scoray [572]
3 years ago
8

Simita has 25 coins, consisting of 10c and 5c, which total $2.25. how many of each does she have?​

Mathematics
1 answer:
Ilya [14]3 years ago
7 0

Answer:

10c = 20

5c = 5

Step-by-step explanation:

Let x be the number of 10c coins; let y be the number of 5c coins. The total is $2.25, so the amount of 10c and 5c coins will add to that. Simita has 25 coins, so x and y, the number of coins, will have to add to 25. Hence, solve the simultaneous equation.

10x + 5y = 225 (1) - times by 0

x + y = 25 (2) - times by 5

10x + 5y = 225 (1)

5x + 5y = 125 (2)

Then, take equation 2 away from equation 1.

5x = 100

x = 20

Substitute x back into the original equation.

x + y = 25

20 + y = 25

y = 5

You might be interested in
On a map, 2 cm represents 30 mi. The actual distance between two towns
nydimaria [60]

Answer:

<h2>5 cm</h2>

Step-by-step explanation:

step one:

Given that the scale of the map is

 2cm to represent 30 miles

That is  every 1 cm is 15 miles in reality

step one:

what we are solving for is the distance in cm on the map so,

1cm rep 15miles

xcm rep 75miles

cross multiply

Xcm= 75/15

X= 5 cm

hence on the map 75miles distance between the two towns is seen as 5 cm

8 0
3 years ago
Solve. for. c m=c-s
podryga [215]

Answer:

s-c= m  c

Step-by-step explanation:

8 0
2 years ago
you are buying cherries at the grocery store if the cost is $4.25 per pound, create a relation that represenr the amount spent ,
Tom [10]
A = 4.25p

this equation says that the amount that you spent (A) is equal to the how many pounds of cherries you buy (p) and you know from the question that each pound costs 4.25
4 0
3 years ago
Translate to an expression. How far have I travelled if I biked at 10mph for hhrs, I walked at 3mph for twice as long as I biked
ehidna [41]

Answer:

10*h+3*2*10

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Math sequence find the 9th term
svet-max [94.6K]
<span>Sometimes, rather than </span>finding<span> the next number in a linear </span>sequence, you want tofind<span> the 41</span>st<span> number, or 110</span>th<span> number, say. Writing out 41 or 110 numbers takes a long time, so you can use a general rule. To </span>find<span> the value of any </span>term<span> in a </span>sequence, use the nth term<span> rule.</span>
5 0
2 years ago
Other questions:
  • An employee compiled sales data for a company once each month. The scatter plot below shows the sales (in multiples of $1000) fo
    10·2 answers
  • Find the area of the following geometric figure.
    7·2 answers
  • All of the following are equivalent except<br> 7x2<br> 4x+3x<br> (4+3)x<br> 7x
    7·2 answers
  • Gross profit will always be___ net income.
    12·2 answers
  • Hi fjvijbtg bvmrtb trtibmrgj vtrjmvbrtj
    8·1 answer
  • A sports club needs to raise at least $500 by selling chocolate bars for $2.50 each. Sebastian wants to know how many chocolate
    10·2 answers
  • I need help I’m not good at math lol
    7·1 answer
  • PLEASSSSEE HURRRRY HELLPP
    12·1 answer
  • Jimmy made a scale drawing of his house. The actual dimensions of his house are 50 feet by 100 feet. He used the scale 1 inch :
    13·1 answer
  • Which is the correct label of the line?<br> D<br> a<br> С
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!