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
vfiekz [6]
2 years ago
5

Alex has 84 quarters and nickels worth a total of $17.80.

Mathematics
1 answer:
Hunter-Best [27]2 years ago
6 0

The equation which can be used to find the number of quarters and nickels is; n + q = 84, 0.05n + 0.25q = 17.80.

<h3>Quarters and nickels</h3>

  • Total coins = 84
  • Total value = $17.80

let

  • Number of quarters = q
  • Number of nickels = n

n + q = 84

0.05n + 0.25q = 17.80

From equation (1)

n = 84 - q

Substitute into (2)

0.05n + 0.25q = 17.80

0.05(84 - q) + 0.25q = 17.80

4.2 - 0.05q + 0.25q = 17.80

- 0.05q + 0.25q = 17.80 - 4.2

0.20q = 13.60

q = 13.60 / 0.20

q = 68

Substitute q = 68 into

n + q = 84

n + 68 = 84

n = 84 - 68

n = 16

Therefore, the number of quarters and nickels are 68 and 16 respectively.

Learn more about quarters and nickels:

brainly.com/question/17127685

#SPJ1

You might be interested in
Which of the following is most likely the next step in the series?<br> Look at the photo
svlad2 [7]
It looks like C since it was the start on the other side.
7 0
3 years ago
Eorge sells baseball cards online. He estimates he can make $4.75 per card. If George has 83 cards, using front-end estimation,
qwelly [4]

Answer:

b

Step-by-step explanation:

4.75 rounds to 5 because the 7, 83 rounds to 80 because of the 3. 80*5=400

5 0
2 years ago
In ΔABC, AD and BE are the angle bisectors of ∠A and ∠B and DE ║ AB . If m∠ADE is with 34° smaller than m∠CAB, find the measures
klemol [59]

Answer:

68, 78,34  dreegs

Step-by-step explanation:


6 0
3 years ago
Read 2 more answers
Please help. Its my last, please show at least some steps as I need to show work. Tysm
Fofino [41]
What’s your question :D
5 0
3 years ago
Write the equation of the line in point-slope form that goes through the points (0, 1) and (2, 7)
laiz [17]

Answer:

point - slope form

 y - 1 = 3 (x-0)

Step-by-step explanation:

<u><em>step(i):-</em></u>

Given points are (0,1) and (2,7)

The slope of the line

     m = \frac{y_{2}-y_{1}  }{x_{2} -x_{1} }

    m = \frac{y_{2}-y_{1}  }{x_{2} -x_{1} } = \frac{7-1}{2-0} = \frac{6}{2}  = 3

  m =3

<u><em>Step(ii):-</em></u>

point -slope form

   y - y₁ = m(x-x₁)

Equation of the straight line passing through the point (0,1) and having slope 'm' = 3

   y - 1 = 3 (x-0)

  y -1 = 3x

 3x - y +1=0

Equation of the straight line passing through the point (0,1) and having slope 'm' = 3 is 3x -y +1=0

4 0
2 years ago
Other questions:
  • .3333... = 1/3. What is .23232323... = as a fraction?
    10·1 answer
  • 23.5 in expanded form
    14·2 answers
  • What is the probability of rolling a 6 sided die and getting a 2 or an odd number?
    10·2 answers
  • What is the answer to <br> x=3x-20 and y=-6+30
    15·1 answer
  • Cara earns a base pay of $1,800 per month at a car dealership plus a commission of 6% of her sales. What are Cara’s total earnin
    14·1 answer
  • The measure of an angle is 3/4 of 60 degrees. What is the measure of the complementary angle?
    14·2 answers
  • Identify the missing symbol in the expression. -0.5 ? -2/4
    7·2 answers
  • 4 &lt; x &lt; 9 <br> X Is an integer <br> Write down the possible values of x
    13·1 answer
  • Decide what can be used to determine the equation of a line when you have two points, but no slope.
    6·2 answers
  • What is (8 - 2) - 6?
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!