975 toffees are to be distributed among 23 children. Estimate the numbers of toffees that each child will get in nearest tens.
1 answer:
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9514 1404 393
Answer:
y = 4/5x +13/5
Step-by-step explanation:
The slope is given by the formula ...
m = (y2 -y1)/(x2 -x1)
m = (5 -1)/(3 -(-2)) = 4/5
The y-intercept is given by the formula ...
b = y -mx . . . . for any point (x, y)
b = 1 -(4/5)(-2) = 1 +8/5 = 13/5 . . . . using the first point
So, the equation is ...
y = mx +b
y = 4/5x +13/5
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<em>Additional comment</em>
If you have a bunch of these to do, you may want to make a spreadsheet with the formulas built in. Then you can type in the two points and have it spit out the m and b for your equation. Even if you don't use it to <em>do</em> the work, you can use it to <em>check</em> the work.
Answer:
See explanation below.
Step-by-step explanation:
Let's say, represents the sale price of radio.
Then the marked price of the radio is
The cost price of the radio is
The discount is simply 25% because the radio is being sold at 25% less then the marked price.
The gain percent is given as:
The radio is being sold at 12.5% gain.
Best Regards!