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
padilas [110]
3 years ago
8

A jar that contains quarters and dimes is worth $7.15. If there are a total of 40 coins,

Mathematics
2 answers:
kherson [118]3 years ago
7 0

Answer:

21 quarters and 19 dimes

Step-by-step explanation:

Create a system of equations where q is the number of quarters and d is the number of dimes.

0.25q + 0.1d = 7.15

q + d = 40

Solve by elimination by multiplying the bottom equation by -0.25

0.25q + 0.1d = 7.15

-0.25q - 0.25d = -10

Add them together and solve for d:

-0.15d = -2.85

d = 19

Then, plug in 19 as d into the second equation to solve for q:

q + d = 40

q + 19 = 40

q = 21

So, there are 21 quarters and 19 dimes

klasskru [66]3 years ago
4 0

Answer:

21 Quarters, 19 Dimes.

Step-by-step explanation:

21 x .25 = 5.25

19 x .10 = 1.90

5.25 + 1.90 = 7.15

You might be interested in
GEOMETRY HELP PLEASE!! WILL MARK BRAINLEIST!<br> 5
adell [148]

AC=BD

64 units=10x+24

64-24=10x

40=10x

X=40 divided by 10= 4

hope it helps:)))

5 0
3 years ago
Read 2 more answers
Kate has 787 pennies in her piggy bank. She earns 292 pennies by
ivolga24 [154]

the total number of pennies Kate's have can be known by adding all the pennies.

=787 + 292

=1079

the nearest round off of the pennies is 1000

3 0
3 years ago
Read 2 more answers
15 POINTS (Will MARK BRAINLIEST) Simply theses problems
stiks02 [169]

Answer:

Part A: 108

Part B: 125

Part C: 1.71 x 10^-4

Part D: 0.2

Part E: 0.040

Sorry for the wait, laptop is being slow :/

I hope this helps.

4 0
3 years ago
what is the radius of a circle with a circumference of 125 cm? round your answer to the nearest whole number .use 3.14
Lerok [7]

Answer:

19.9 i think

Step-by-step explanation:

125/3.14=39.8

39.8/2=19.9

hope i helped

5 0
3 years ago
Read 2 more answers
Point B(6, -3) is translated using the rule (x -5 y + 9) what is the y coordinate of B'
Andrej [43]

This rule shows how we transition the x-coordinate and y-coordinate when finding B'.


In this rule, it shows us what to add/subtract from the x-value and y-value in the coordinate. We can see that it wants us to subtract 5 from the x-value (based on the "x - 5") and that it wants us to add 9 to the y-value (based on the "y + 9"). Based on this information, we can find B':

\textrm{B}'(6 - 5, -3 + 9)

\boxed{\textrm{B}\,'(1, 6)}


The "y-coordinate" of B' is 6.

7 0
3 years ago
Other questions:
  • 7 cakes cost £5.60 , what would be the cost of:<br> 10 cakes<br> 5 cakes<br> 12 cakes
    13·2 answers
  • Help on this plzzzzz
    6·2 answers
  • Choose the different ways that a graph can be misleading.
    15·2 answers
  • Put into slope intercept form:(-4, 1); m= -2/3
    7·1 answer
  • Solve for x in the figure below
    5·1 answer
  • What is theta in trigonometry?
    10·2 answers
  • As one once said Another one
    6·2 answers
  • 12 = -4(-6x - 3)<br><br> What does x=
    9·2 answers
  • I'm testing something, so you can just take the points if you want I don't care.
    9·2 answers
  • Can someone please help me?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!