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3 years ago

This is algebra. Thank you

Mathematics

2 answers:

algol [13]3 years ago

6 0

Answer:

Step-by-step explanation:

Nata [24]3 years ago

3 0

Answer:

the answer is c

Step-by-step explanation:

I know this is the answer because i still have the paper that we did on this and i had the same question

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Marcos had 15 coins in nickels and quarters. He had 3 more quarters than nickels. He wrote a system of equations to represent th

hodyreva [135]

Answer:

There are 6 coins in nickels and 9 coins in quarters.

Step-by-step explanation:

Now, to find the solution.

According to question:

The number of nickels = $x$ .

The number of quarters = $y.$

So, the total number of coins:

$x+y=15.$

He had 3 more quarters than nickels.

Thus,

$y=x+3$ .....(1)

Now, to get the solution:

$x+y=15$

Substituting the equation (1):

$x+(x+3)=15$

$x+x+3=15$

$2x+3=15$

Subtracting both sides by 3 we get:

$2x=12$

Dividing both sides by 2 we get:

$x=6.$

The number of nickels = 6.

Now, substituting the value of $x$ in equation (1):

$y=x+3\\\\y=6+3\\\\y=9.$

The number of quarters = 9.

Thus, there are 6 coins in nickels and 9 coins in quarters.

6 0

3 years ago

Can I get help on this

kramer

Answer:

3 5/10 or 3 1/2

Step-by-step explanation:

6 0

3 years ago

April sold 75 tickets to the school Christmas play and collected $495. If adult tickets cost $8 and children tickets were $5 how

riadik2000 [5.3K]

Answer:

Step-by-step explanation:

~First we have to write our two equations that are:

1. 8x+5y=$495(becoz the no. of adult tickets is unknown and children is unknown we use variables instead and multiplying them with the amount of money for each gives us 495)

2. x+y=75( No. of adult tickets and children altogether gives us 75)

~Use the substitution method by using any of the equations and putting the variable you want as the subject and then putting its values in the next equation:

x+y=75

x=75-y

~Substitute to find y(no. of children’s ticket)

8x+5y=495

8(75-y)+5y=495

600-8y+5y=495

-8y+5y=495-600

-3y=-105

y=-105/-3

y=35

Therefore, the no. of children tickets is 35.

~Substituting y in the substitution equation(x=75-y):

x=75-35

x=40

Therefor no. of tickets sold to adults is 40.

~Final answers:

Adults=40

Children=35

5 0

4 years ago

Read 2 more answers

Can someone answer and explain ILL MARK BRAINLIEST

dimulka [17.4K]

It’s c because slope usually has to deal with numbers

6 0

3 years ago

A schools enrollment in 2012 was 1234 now it is 1456 what does the expression look like that would help me find the percent chan

astraxan [27]

Answer:

.18 % increase

Step-by-step explanation:

First you would find what the difference is between the school enrollment

you would do 1456 - 1234 = 222

Then you would divide 1234/1456 = 84.75% to see the total percentage

The increase however has a percentage of .18%

To check your work you would do .18 x 1234 = 222.12 ( round to the nearest whole number so it would just be 222) then add 1234+ 222 = 1456!

5 0

4 years ago