A collection of quarters and nickels is worth $14.80. There are 88 coins in all.How many of each coin are there?
Answers
number of nickes=n
number of quarters=q
if you have 1 quarter then you have 25 cents so we will represent like this
25q
and nickles is 5n
14.50=1450 cents
so
25q+5n=1480
q+n=88
subtract q from both sides
n=88-q
subsitute into first equation
25q+5(88-q)=1480
25q+440-5q=1480
add like terms
20q+440=1480
subtract 440 from both sides
20q=1040
divide both sdies by 20
q=52
there were 52 quarters
25(52)+5n=1480
1300+5n=1480
subtract 1300 from both sides
5n=180
divide both sides by 5
n=36
there were 36 nickels
nickles=36
quarters=52
Related Questions
Describe how you would estimate the square root of a number that is not a perfect square without using a calculator.
.can someonee help me as soon as possible
Steve has a credit account with his local coffee shop. He gets a large coffee every day and a debit of $1.99 is applied to his account. He now owes a total of $11.94. Write a numeric equation using negatives to show the number of days it has been since he last paid his bill.
For which of the following inequalities is x greater than or equal to 4 a solution?A) x + 3 is greater than or equal to 1B) 3x is greater than or equal to 1C) x - 3 is greater than or equal to 1
Answers
The number of papers sold to buy Soccer cleats is required.
The number of newspapers that needs to be sold is 48.
Money made by selling one newspaper = $0.75
Cost of Soccer cleats = $36
Let be the number of newspaper to be sold
The product of the number of newspapers and the cost of one newspaper should be equal to the cost of the cleats.
So,
Learn more:
36 / 0.75 =
3600 / 75 =
720 / 15 =
144 / 3 =
48 / 1 =
48
You have to sell 48 newspapers to by Soccer Cleats.
Answers
(-3, -2, -1, 0, 1, 2, 3)
14n +72
6n +72
14n +90
Answers
6n + 72 is the expression is equivalent to 10n + 81 - 4n - 9
What is Expression?
An expression is combination of variables, numbers and operators.
The given expression is 10n + 81 - 4n - 9
Ten times of n plus Eighty one minus four times of n minus nine
In the given equation n is the variable, plus and minus are operators
10n + 81 - 4n - 9
We need to add the like terms.
Like terms means terms of variables with same power.
10n + 81 - 4n - 9
6n+72
Hence, 6n + 72 is the expression is equivalent to 10n + 81 - 4n - 9
To learn more on Expressions click:
#SPJ2
Answer:
6n + 72
Step-by-step explanation:
10n + 81 - 4n - 9
6n + 72
A.length =5 1/2
width =5 in.
B. Length= 5 3/4 width 4 3/4 in.
C. Length 12 1/2
Width = 2 in.
D. Length 12 1/2
Width 12 1/2 inches
Then figure out the perimeter of the rectangle you selected
Answers
Hope this helps:)
adjacent
B.
alternate interior
C.
alternate exterior
D.
corresponding
Answers
ANSWER: C. alternate exterior
EXPLANATION: Alternate Exterior Angles are two angles that are on the exterior of and , but on opposite sides of the transversal. They are located outside the two parallel lines but on opposite sides of the transversal, creating two pairs of alternate exterior angles. Alternate exterior angles are congruent, meaning they have same measures. Here is an image to understand it better.