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Irina-Kira [14]
3 years ago
7

Show coins to count back the change you would get if you bought candy for .12 cents and paid for it with a quarter. answer

Mathematics
1 answer:
Veronika [31]3 years ago
6 0

If you subtract 25 from 12 you will get 13 cents. So you will get back 1 dime and 3 pennies.

I hope this helped you :)

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Lisa [10]

Answer:

ok i did

Step-by-step explanation:

4 0
3 years ago
42.1% of 375.4 =
igomit [66]
The answer is 0.744 just do the math 
7 0
3 years ago
Three friends go to the movies and split the total cost between them. The total cost is $13.05 for movie tickets and $10.26 for
IRISSAK [1]
Each of them should pay $7.77 because I added the total from the movie and the snack and got $23.31. Since there is three friends, I divided $23.31 by 3 and got $7.77. 
6 0
3 years ago
Read 2 more answers
15
dimulka [17.4K]

Answer:

15) Ellen is 12 years old.

16) Don't know what value you are looking for but x=(17/4) while y=(7/4) since the set of equations is 2x-2y=5 and x+y=6.

Step-by-step explanation:

15) Ellen (E) is currently twice as old as Maria (M).

Twice means to multiply by 2.

E=2M is therefore the equation for this part of the problem.

In 6 years, Maria (M) will be 2/3 as old as Ellen (E).  Keep in my Maria as aged 6 years (M+6) and Ellen as aged 6 years (E+6):

M+6=(2/3)(E+6).

So we have this system to solve:

E=2M

M+6=(2/3)(E+6).

I'm going to replace the E in the second equation with 2M since the first equation says E=2M:

M+6=(2/3)(E+6) with E=2M:

M+6=(2/3)(2M+6)

Distribute:

M+6=(4/3)M+(12/3)

Reducing 12/3 to 4:

M+6=(4/3)M+4

Subtract 4 on both sides:

M+2=(4/3)M

Subtract M on both sides:

2=(4/3)M-M

Find a common denominator:  

2=(4/3)M-(3/3)M

Combine like terms:

2=(1/3)M

Multiply both sides by the reciprocal of 1/3 which is 3:

3(2)=3(1/3)M

6=1M

6=M

M=6

Maria is six years old.

Recall E=2M.

So if M=6, then E=2(6)=12.

So currently E is twice as old as M since 6(2)=12.

In six years, M will be 12 which E will be 18.

M (12) is two-thirds as old as E (18) since 12=2/3(18)

16)

2x-2y=5

 x + y=6

Your question doesn't state which value it is looking for.

Anyways I'm going to solve the system for the point (x,y) and then you can decide which part of this answer to use.

I'm going to solve this system by elimination.  Each equation already has the same form: ax+by=c. I just need a column with the variables to be opposite or the same.

I'm going to multiply both sides of equation 2 by 2:

2x-2y=5

2x+2y=12

Now I have opposites in a column: -2y and 2y.

When you add opposites you get 0 so this is what you want to use elimination.

We are going to add the equations now:

2x-2y=5

2x+2y=12

------------------Adding!

4x+0y=17

4x      =17

Divide both sides by 4:

 x      =17/4

Now if x=17/4 and x+y=6, then we have that (17/4)+y=6.

Subtracting 17/4 on both sides gives us y=6-(17/4).

Finding a common denominaotr gives us y=(24/4)-(17/4).

Simplifying this gives us y=(7/4).

The point of intersection (the solution) is (17/4 ,  7/4)

7 0
3 years ago
Solve for x:
barxatty [35]

Answer: A

Step-by-step explanation:

4( 1 - x) + 2x = -3(x + 1)

4 - 4x + 2x = -3x - 3               Distribute numbers to paranthesis

4 - 2x = -3x - 3                       Add like terms

4 + x = -3                                Add 3x to both sides

x = -7                                       subtract 4 to both sides

5 0
3 years ago
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