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
katovenus [111]
3 years ago
10

A pile of 42 coins worth $4.90, consisting of nickels and quarters. How many nickels are there?

Mathematics
1 answer:
Ymorist [56]3 years ago
6 0

Answer:14

Step-by-step explanation:

A nickel is 5 cents (20% of dollar)

and a quarter is 25 cents (25% of dollar)

We have given a pile of 42 coins worth of $4.90

Let x be the no nickels and

y be the no of quarter

therefore

x+y=42    -----1

\frac{x}{4}+\frac{y}{20}=4.90 ---2

Solving \left ( 1\right )&\left ( 2\right ) we get

x=14 & y=28

Therefore no of nickels is 14 & no of quarters is 28

You might be interested in
Evaluate x-2 for x = -3.
Vadim26 [7]
X-2 for x=-3
-3-2=-5, add dem negatives
8 0
3 years ago
A classmate said that line AB and line DC are parallel based on the diagram below. Explain your classmates error.
MatroZZZ [7]

<em><u>Explanation</u></em>:

The only information we have to go on is that ∠AWZ ≅ ∠XYC. However, these are not specific kinds of angles that can prove lines parallel. If we had a pair of alternate interior angles, such as ∠AWZ and ∠WZY, we could say that the lines are parallel. However, we do not have enough information.

3 0
3 years ago
What is the difference of the two expressions shown below?<br> (3/4x + 2) - (1/4x + 5)
faltersainse [42]

Answer:

-4. (e) (2-7)(5–3)+32. (-5)(2) +9. -10+9. -8710. 913 - 12 - 13. Ex: Evaluate 4x-7 when x=5. 4(5)-7 ... Ex: In the following exercise we show how two linear expressions are ... equivalency of the two expressions you determined to be equivalent above? ... Ex: Determine an expression that is equivalent to 10x+15? lox+1. 5(2X+3).

Step-by-step explanation:

Here is my notes hope it helped

5 0
3 years ago
Please help test due in 1 hour and it’s a grade! Will give brainliest and good review!
natita [175]

Answer

The measurement of the missing sides are 4 cm on each side

Step-by-step explanation:

multiply 5 times 2 (5x2=10) take away the 10 and 18 and the answer for it is the answer for the whole thing.

7 0
3 years ago
Help please
Novosadov [1.4K]
General\ equation\ for\ line\ in\ slope\ intercept\ form:\\\\y=ax+b\\\\To\ find\ a\ and\ b\ substitude\ points\ (-7,5)\ (-4,1)\ into\ equation\\\\ &#10;\left \{ {{5=-7a+b}\ \ \ \ \atop {1=-4a+b\ |*-1}} \right.\\\\ \left \{ {{5=-7a+b}\ \ \ \ \atop {-1=4a-b}} \right.\\\\&#10;+----\\\\Addition\ method\\\\&#10;4=-3a\ \ |:(-3)\\\\&#10;a=-\frac{4}{3}\\\\&#10;b=5+7a=5+7*(-\frac{4}{3})=5-\frac{28}{3}=-4\frac{1}{3}\\\&#10;Answer\ y=-\frac{4}{3}x-4\frac{1}{3}\\\\&#10;Checking\ solution:\\&#10;y-5=-\frac{4}{3}(x+7)&#10;y-5=-\frac{4}{3}x-\frac{28}{3}\\\\&#10;y=-\frac{4}{3}x-\frac{28}{3}+5\\\\&#10;y=-\frac{4}{3}x-4\frac{1}{3}\\\\Answer:B \ and\ D.
5 0
3 years ago
Read 2 more answers
Other questions:
  • What is 1/2 x 5 x 2/3
    7·2 answers
  • at a party 2/5 of the pizzas ordered had pepperoni. The kids ate only 1/3 of the pepperoni pizza while the parents ate all of th
    11·2 answers
  • H(n)=-2n^2+4; find h(4)
    7·1 answer
  • Add 11/6x and 2/13x<br><br> Add 11/6x and 2/13x
    12·1 answer
  • Round to the whole number 3.5262
    8·2 answers
  • The diagram shows the dimensions of a park and a garden. The shape of the garden is similar to the shape of the park.
    5·1 answer
  • Please answer part one!!!! and fill out the chart
    11·1 answer
  • Which situation could represent the inequality 100 + 20x ≥ 380?
    12·2 answers
  • Jade is a real estate agent and is paid an annual salary of $18 000 plus a commission of 2.5% on
    11·1 answer
  • a positive integer divisor of 12! is chosen at random. the probability that the di-visor chosen is a perfect square can be expre
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!