Answer:
17
Step-by-step explanation:
(x+28y)/x =50
Multiply each side by x
(x+28y)/x *x =50*x
x+28y = 50x
Subtract x
x-x+28y = 50x-x
28y = 49x
Divide by y
28y/y = 49x/y
28 = 49 x/y
Divide by 49
28/49 = x/y
We want to find
(y+28x)/y
Rewriting as
y/y +28 (x/y)
1 + 28(x/y)
Replacing x/y with (28/49)
1 + 28(28/49)
1 +28*28/49
1+784/49
1+16
17
Answer:
Joe sold 30 pizzas.
Step-by-step explanation:
Joe (5x)
Sam (7x)
7 x 6 = 42
5 x 6 = 30
Answer:
If you're going 80 mph, and you drive for an hour, then you traveled 80 miles.
Step-by-step explanation:
The discount off is $10, so the price would be 30 dollars
There are 1,16,280 different recital programs possible.
Given: A pianist plans to play 4 pieces at a recital from her repertoire of 20 pieces and is carefully considering which song to play first, second, etc.
It means the repetition of pieces is not allowed.
When repetition is not allowed, then the number of ways to arrange n things where r things taken together is given by:-

Now, the number of different recital programs are:-

Hence, there are 1,16,280 different recital programs possible.
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