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
Valentin [98]
2 years ago
11

Please help!!! Greatly apprecieted!

Mathematics
1 answer:
Lilit [14]2 years ago
3 0

Answer:

Tiffany has 13 dimes and 4 nickels.

Step-by-step explanation:

To solve this problem, you will need to write a systems of equations, n will be the number of nickels and d will be the number of dimes.

n+d=17 This means that the number of nickels plus the number of dimes is equal to 17.

5n+10d=150, This means that for each nickel, there is 5 cents and for each dime, there is 10 cents.  The equation is equal to 150 cent because the coins are worth 150 cents.

Next, solve the system:

n+d=17

5n+10d=150 First simplify the second equation by dividing it all by 5.

n+d=17

n+2d=30, Next, isolate n to use substitution on the system.

n=17-d

n=30-2d, Substitute n to solve for d

17-d=30-2d, Solve for d

d=13, this means that there are 13 dimes, plug in the d value in either of the equations to find n.

n+(13)=17

n=4, There are 4 nickles

You might be interested in
Help me with this pls
Leviafan [203]
Rise over run.
The rise is 3
The run is 1
So the slope is 3/1
3 0
3 years ago
Read 2 more answers
Convert .06 yards to inches. A) 2.16 inches B) 2.88 inches C) 21.6 inches D) 28.8 inches
sweet-ann [11.9K]
A yard is 36 in so multiply.06 by 36
The answer is a.2.16 inches
7 0
3 years ago
Read 2 more answers
four friends equally shared the cost of supplies for a picnic. the supplies cost $12.40. how much did each pay?
Airida [17]
Divide by 4 
they each payed $3.10 
8 0
3 years ago
Read 2 more answers
Alma invests $300 in an account that compounds interest annually. After 2 years, the balance of the account is $329.49. To the n
-Dominant- [34]

Invested amount (P) = $300.

Time in years (t) = 2 years.

Balance after 2 years (A) = $329.49.

Let us assume rate of interest = r % compounds annually.

We know, formula for compound interest

A=P(1+r)^t

Plugging values in formula, we get

329.49=300(1+r)^2

\mathrm{Divide\:both\:sides\:by\:}300

\frac{300\left(1+r\right)^2}{300}=\frac{329.49}{300}

\left(1+r\right)^2=1.0983

Taking square root on both sides, we get

1+r=\sqrt{1.0983}

\mathrm{Subtract\:}1\mathrm{\:from\:both\:sides}

1+r-1=\sqrt{1.0983}-1

r=\sqrt{1.0983}-1

r=1.048-1

r=0.048.

Converting it into percentage by multiplying by 100.

r=0.048 × 100

r  = 4.8 %

Therefore, the rate of interest on the account is 4.8% compounds annually.

5 0
3 years ago
Let's say you take an exam worth 240 points and your score marked the 78th percentile of all the exam scores. Based on this you
gladu [14]

Answer:

28%

Step-by-step explanation:

78th percentile means 78% scored less than/equal to you.

100 - 78 = 22%

3 0
3 years ago
Other questions:
  • Select all that apply.
    6·1 answer
  • If a crate contains 25,500 ounces (oz) of rice, about how many pounds (lb) does it contain? [1 pound = 16 ounces] 408,000 lb 425
    10·2 answers
  • The figure shows relationships of the dimensiona of a square pool with an attached patio
    11·1 answer
  • -h+4=-h+4 solve for h
    10·1 answer
  • 35 points + brainliest!
    6·1 answer
  • Evaluate x – y if x= -40 and y = 10 X – y= can I have help plz
    8·1 answer
  • Yh plss I need an answer to this question plss​
    6·1 answer
  • HELP HELP HELP PLEASE
    11·1 answer
  • PLEASE . i’ve fallen behind cos i can’t do this even when using websites.. it’s a week behind my work
    14·1 answer
  • Calculate the slope of the line in the graphs and show your work
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!