How do you know that angle ADB and angle BDC are supplementary

Which equation could be used to solve this problem? A number n is 8 less than the sum of 20 and 12. Find the number.

Is the equation |6+x|=0 no solution?

When the quadratic expression is written in standard form, a=1, b=-3 and c=2

The distance of my room is 48feet the width is 11 what is the length of my room

Juan and Ari went to the farmers market to buy fruit. Juan's bag of apples that he bought weighed 31/7 pounds. Ari's bag of oranges that she bought weighed 19/3 pounds. About how much heavier is Ari's bag than Juan's bag? A. 1 1/2 pounds B.

The Tennis Teams of Atlanta need to older tennis balla for the upcoming tournament. They will need 2,367 tennis balls. If each can hold 5 tennis balls, how Many will they purchase

42 is subtracted from 42% of a number. The result is 42. What is the number?

The temperature is changing every day by negative 7 over 18 degrees Fahrenheit. What will be the change in the temperature after 3 days?

The equation of the polynomial function is: f (x) = (x + (2 + i)) (x + (2 - i)) (x + 5) f (x) = (x - (2 + i)) (x - (2 - i)) (x - 5) f (x) = (x - (2 + i)) (x - (2 - i)) f (x) = (x + (2 + i)) (x - (2 - i)) (x - 5)

Andre owned a 1/4 acre lot. He wanted to construct a 120' x 80' tennis court on the lot. How many square feet will remain uncovered after he builds the tennis court?