The sum of the two digits of a certain number is 7. If 9 is added to the original number, the new number will have the original digits reversed. Find the number. (Hint: Let ube
the tens digit and let y be the ones digit, so that the value os the number is 10x + y.)
Number​

19.side- angle- side

20. angle- side- angle

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if you are looking for the unit rate then the answer would be 9 because unit rate is distance divided by time.

step-by-step explanation:

answer: input the dimensions of the room to be painted. click the button to calculate the amount of paint and man-hours needed for this job.

interior paint coverage depends on the brand of paint used. the coverage amount is listed on the label of the paint can. use this to adjust the values in the paint coverage section below. paint usually is applied at 350 to 400 square feet per gallon (primer at 200 to 300 square feet per gallon).

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