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
Zigmanuir [339]
3 years ago
8

) Jess has saved dimes ($ 0.10) and quarters ($ 0.25) in their piggy bank. Define the variables and write a

Mathematics
1 answer:
Mamont248 [21]3 years ago
4 0

Answer:

Quarters = 10

Dimes = 15

Step-by-step explanation:

d = number of dimes, q = number of quarters

d + q = 25 is the equation for number of coins

0.1d + 0.25q = 4 is the equation for value of coins

First, solve for d in terms of q:

d + q = 25

d = 25 - q

Then substitute that into the other equation:

0.1(25 - q) + 0.25q = 4

2.5 - 0.1q + 0.25q = 4

0.15q = 1.5

q = 10

And back to d = 25 - q, d = 25 - 10 = 15

Check the math:

0.1(15) + 10(0.25) = 1.5 + 2.5 = 4

LMK if you have questions

You might be interested in
Product in standard form (explain)<br> (3+6i)(4+9i)
ololo11 [35]
First you have to factor (aka, multiply) your binomial (which is what you have written) usually it helps to organize your thinking, and help tell what you need to multiply, to use the binomial chicken(or crab claw, what ever you want to call it) which basically you draw two arches, one arch connecting the 3 and 4, and then the other the 3 and 9i. on the opposite side (depending on wheater you connected then from the top or bottom) you connect (with an arch) the 6i and the four, and then the 6i to the 9i.

so now you multiply each piece you've connected:
3 x 4= 12
3 x 9i= 27i 
6i x 4= 24i
6i x 9i= 54i^2 

after  you've done this you can move on to  putting it into standard form, which just means you put things in descending order, depending on how many exponents the x (or in this case i) has.
your largest exponent is 54i^2, so that's first in out equation, next 27i, and 24i (you can combine these because they are like term) which equals 51i, after that you just add the 12 on the end, so the final equation looks like this:

54i^2+51i+12


4 0
4 years ago
What is 873 divided by 35?!!
EastWind [94]

873 divided by 35= 24 33/35

8 0
3 years ago
Will mark brainliest. will be reported if only for the points
tia_tia [17]

Answer:

d=~7.6

Step-by-step explanation:

7^2+3^2=d^2

49+9=d^2

58=d^2

Square root of 58=~7.6

d=~7.6

6 0
3 years ago
Read 2 more answers
I WILL MARK BRAINLIEST!!
vagabundo [1.1K]

Answer:

4 days a week

Step-by-step explanation:

2+1=3

3+1/2+12=4

4 0
3 years ago
Read 2 more answers
PLEASE HELP! Here's my word problem; A rectangular riding arena is 45 meters long. The stables are 10 meters wide and 26.6 meter
Pavlova-9 [17]

Answer:

38

Step-by-step explanation:

fggfhghghj

7 0
3 years ago
Other questions:
  • Need help with 8,9, and 10
    12·1 answer
  • What are the domain and range of the logarithmic function f(x) = log7x? Use the inverse function to justify your answers.
    15·2 answers
  • Simplify the expression. –10z – 28z <br> 18 <br> 18z <br> –38z <br> 38z
    10·2 answers
  • Can someone help me with this problem?????
    8·1 answer
  • How do you divide a negative number and a positive number? My problem is -19÷13.
    7·2 answers
  • If 50 is increased by 20%, what is the new amount?
    12·2 answers
  • Write the equation of a line in slope intercept form that contains the points (-1,2) and (3,4)
    12·1 answer
  • 20 gallons = ______ quarts​
    9·1 answer
  • Can some one please help me with this thank you
    9·2 answers
  • Find the value of x in the triangle shown below.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!