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Gnom [1K]
3 years ago
15

4x/ 2x + y + 2y/ 2x + y Perform the indicated operation. Be sure the answer is reduced.

Mathematics
1 answer:
White raven [17]3 years ago
4 0

Answer:

\frac{4x}{2x+y} +\frac{2y}{2x+y}=2

Step-by-step explanation:

Given:

The expression to simplify is given as:

\frac{4x}{2x+y} +\frac{2y}{2x+y}

Since, the denominator is same, we add the numerators and divide it by the same denominator. This gives,

\frac{4x+2y}{2x+y}

Now, we simplify further by factoring out the common terms from the numerator and denominator if possible.

We observe that, 2 is a common factor to both 4x\ and\ 2y. So, we factor out 2 from the numerator. This gives,

\frac{2(2x+y)}{2x+y}

Now, the term 2x+y is common in both the numerator and denominator. Hence, \frac{2x+y}{2x+y}=1

So, the simplified form is:

=2\times \frac{2x+y}{2x+y}\\\\=2\times 1\\\\=2

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Sue has $2.80 in dimes and nickels. If she has 13 more dimes than nickels, how many of each coins does she have?
olga55 [171]
I have seen this question before and I think you meant 10 more dimes than nickels.

We can use substitution to answer this question. The value of a nickel is 5 cents, and we can use the variable n to represent the number of nickels. The value of a dime is 10 cents, and we can use the variable d to represent the number of dimes.

First lets figure out the equations.
.10d+.5n=2.80 (the number of nickels (n) multiplied by .5 will tell us their money value. Same thing for the dimes)
d-n=10 (since there are 13 more dimes than nickels, the number of dimes value (d) minus the number of nickels value (n) will give us 10)

Now lets isolate a variable in one of the equations, preferably the second one because it doesn't have any visible coefficients,

d-n=10
-n=10-d (subtracted the d from both sides)
n=-10+d (made the n positive)

Now that we have the value of n, we can plug it into the other equation.

.10d+.05n=2.80
.10d+.05(-10+d)=2.80 (we replaced the n with the value that we previously got)
.10d-.5+.05d=2.80 (did the multiplication)
.15d-.5=2.80 (combined like terms)
.15d=3.30 (added the .5 to both sides)
d=22 (divided both sides by the .15)

Now that we know that there are 22 dimes and we also know that there are 10 less nickels than dimes, so we can subtract 10 from 22 to get the number of nickels. 22-10=12

d=22
n=12


5 0
3 years ago
If helen travels 567 miles miles in 9 hours how far does she travel in one hour
Lynna [10]
To figure out how much she travels in one hour you just do 567÷9 so...
567÷9=63
Helen travels 63 miles per hour
5 0
4 years ago
The value of the 9 in 901,532 is how many times the value of the 9 in 157,900?<br><br> NEED HELP!!!
tresset_1 [31]

Answer:

the answer for this question is 1000times.

Step-by-step explanation:

the value for 9 in 157,900 is nine hundred(900).and the value of 9 in 901,532 is nine hundred thousand(900000).

900×1000= 900,000.

7 0
3 years ago
Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
Ann [662]
0.2 repeating is 0.2222222222...
so you have to put the repeating digit(s) divided by 9's
Then it will be 2/9 which yields 0.222222222.....
3 0
3 years ago
Average rate of change
Ganezh [65]

Answer:

The average rate of change in that space would be 12.

Step-by-step explanation:

To find this, use the two ordered pairs (-1, 3) and (1, 27) in the slope formula.

m(slope) = (y2 - y1)/(x2 - x1)

m = (27 - 3)/(1 - -1)

m = 24/2

m = 12

7 0
3 years ago
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