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
Olin [163]
3 years ago
15

50 POINTS!!! Word problem.

Mathematics
2 answers:
oksano4ka [1.4K]3 years ago
4 0
Let d = # of dimes
Let q = # of quarters
45 = d + q
.1d + .25q = 8.40
Then we can use the substitution method and make it so that d = 45 - q.
Then plug in the value for d into the second equation.
.1(45-q)+.25(q)=8.40
4.5-.1q+.25q=8.40
4.5+.15q = 8.40
.15q = 3.90
q = 26
d = 45 - 26 = 19
26 quarters
19 dimes
SpyIntel [72]3 years ago
4 0

Answer:

Step-by-step explanation:

Let d = # of dimes

Let q = # of quarters

45 = d + q

.1d + .25q = 8.40

Then we can use the substitution method and make it so that d = 45 - q.

Then plug in the value for d into the second equation.

.1(45-q)+.25(q)=8.40

4.5-.1q+.25q=8.40

4.5+.15q = 8.40

.15q = 3.90

q = 26

d = 45 - 26 = 19

26 quarters

19 dimes

You might be interested in
What is 2+2+2-2-2+50-20+800-256+12?
victus00 [196]

588

hope this helps :p

6 0
4 years ago
Read 2 more answers
A recipe calls for 6 teaspoons of seasoning for every 2 batches of chicken. If you have 14 batches of chicken, how much seasonin
mestny [16]

Answer:

42 tps

Step-by-step explanation:

I think

If correct pls give me brainliest

5 0
3 years ago
Please answer these and I will give brainliest!!!
ollegr [7]

Answer:

#1. 1232 feet per minute

#2. $14.81 per second

#3. 46.93 feet per second

Hope This Helps!

And that it's right!

4 0
3 years ago
The population of one type of fish, P.,, and another type of fish, P2, are modeled by the equations P1 = 10.000) and P2 = 1000(3
Firlakuza [10]
I think it’s B.P2= 1/1
3 0
3 years ago
How do I solve this equation n^2=18n+40.
Readme [11.4K]

Answer:

n = 20 or n = -2

Step-by-step explanation:

Solve for n over the real numbers:

n^2 = 18 n + 40

Subtract 18 n + 40 from both sides:

n^2 - 18 n - 40 = 0

The left hand side factors into a product with two terms:

(n - 20) (n + 2) = 0

Split into two equations:

n - 20 = 0 or n + 2 = 0

Add 20 to both sides:

n = 20 or n + 2 = 0

Subtract 2 from both sides:

Answer:  n = 20 or n = -2

3 0
3 years ago
Other questions:
  • A 6 foot tall man makes a shadow that is 3 1/2 feet long. How tall is a building that makes a 14 7/8 foot shadow?
    11·1 answer
  • Suppose you are testing The sample is large (n = 71) and the variance, σ2, is known. H0:μ=20 vs H1:μ>20. (a) Find the critica
    8·1 answer
  • According to the Rational Root Theorem, which is not a possible solution of the
    6·1 answer
  • Lol of 6,8 and 24,32
    11·1 answer
  • How many lines of symmetry does the letter r have
    12·2 answers
  • Help look at picture!
    6·2 answers
  • I really need help with this one
    13·2 answers
  • 1. Use the Pythagorean Theorem to find then find the perimeter and area of each
    13·1 answer
  • A caterer needs to buy 22 pounds of pasta to cater a wedding. At a local store, 8 pounds of pasta cost $12. How much will the ca
    9·1 answer
  • Fin the domain of the function f(x)=x^2+7
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!