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
Tju [1.3M]
3 years ago
9

I have $25 all in nickels and dimes. There are twice as many Nickles as dimes. How many of each are there?

Mathematics
1 answer:
Mama L [17]3 years ago
7 0

Answer:

N=250

Step-by-step explanation:

 "twice as many nickels as dimes"     means    N =2D     [eq1]

 "collection of nickels and dimes is worth $25"    means

        5N + 10D = 2500      [eq2]

   (To avoid using decimal points, PLZ express everything in cents.)

Substitution   (substitute N from eq1 into eq2]:

     5(2D) + 10D = 2500

      10D + 10D = 2500

          20D = 2500

            D = 125

      N=2D         [eq1 again]

      N=2(125)

      N=250

Check:

  Is   5(250) + 10(125) = 2500   ?

        1250 +  1250 = 2500   ?

          2500 = 2500   ?yes

You might be interested in
S^2t - 10 if s= -8 and t = 3/4
mart [117]

Answer:

-58

Step-by-step explanation:

input

-8^2(3/4)-10

simplify

-8^1.5-10

then solve

:)

3 0
3 years ago
Read 2 more answers
Mia's office recycled a total of 9 pounds of paper over 3 weeks. After 7 weeks, how many pounds of paper will Mia's office have
tankabanditka [31]

Answer:

21

Step-by-step explanation:

average 9 pounds per three weeks

divide 9 in 3 three weeks

3 pounds per week

7 times 3 is 21

5 0
3 years ago
Greg has 245 cows on his farm. In the mornings, he gives them a total of 5,752 pounds of hay. If each cow eats the same amount,
Mashutka [201]

Answer:

I would say A because the real answer is 23.477

Step-by-step explanation:

5 0
3 years ago
HELP QUICK, I WILL DO ANYTHING, I WILL GIVE BRAINLIEST AND 15 POINTS HELP QUICK
Katen [24]

Answer:

2bs + b^2, this is the equation to find the surface area. B is base length and s is slant height.

Step-by-step explanation:

7 0
3 years ago
Consider the function f(x)= x² - 4
Arisa [49]

Answer:

(X+2) (X-2) . This is the final answer

Step-by-step explanation:

Solving f(x) = x^2 - 4

A^2 - B^2 is a special case where the original equation before it was foiled is

(A + B) (A - B) because the middle terms will cancel out when foiled.

This means that the equation can be written as

(X + 2)(X - 2) = 0

Each of these you will then set equal to 0 and then solve

X + 2 = 0, X - 2 = 0

X = -2, 2

I hope this helps you! let me now if its right ok <3 :)

4 0
3 years ago
Other questions:
  • Identify a possible first step using the elimination method to solve the system and then find the solution to the system.
    13·1 answer
  • Which expression has a value of 10
    13·1 answer
  • M(x) = x2 + 4x<br> Evaluate (mn)(x) for x = -3.
    13·1 answer
  • Peanuts, a rock and roll producer, has scheduled an outdoor Woodstock 2 concert where revenue will be donated to Goodwill. The p
    10·1 answer
  • Brianna's Bakery offers 3 flavors of bagels. Customers can choose from plain, cinnamon, or blueberry bagels. Yesterday, a custom
    15·1 answer
  • Find the value of x in the figure
    5·1 answer
  • 6. At the Winter Olympics, the ratio of Canadian medals to US to Russia was 1:8:5. If Russia won 25
    14·1 answer
  • What's the surface area?<br><br>(EXPLAIN YOUR ANSWER)
    14·1 answer
  • your paper airplane is launched from 25ft. it descends at a rate of 5ft per second. write an equation that represents the height
    8·1 answer
  • Aliana is a certain age, and her mother is six times as old as her. In ten years'
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!