David can finish painting the room in 6 hours, and his elder brother Antony can finish it in 4 hours. If both brothers paint the room together, how many hours will it take them?

To approach the runway a plane must travel at a 7 degree decent starting from 2 miles above the ground, to the nearest mile how far away will the plane have to start its decent

A researcher wishes to estimate, with 95 % confidence, the population proportion of adults who say chocolate is their favorite ice cream flavor. Her estimate must be accurate within 1 % of the population proportion.

12 yellow balls and 7 red balls are placed in an urn. two balls are then drawn in succession without replacement. what is the probability that the first ball drawn is a red ball if the second ball drawn is yellow?

The measure of an angle is 15 degrees what is the measure of its supplementary angle?

How to turn y-2x=7 into y=mx+b

1which ordered pair makes the equation true? 2x-5y=-10 A (5,4) B (-10,4) C (2,5) D (20,4) 2what is the simplified form of the expression 15y-3 (4y+10) A3y-30 B3y+10 C27y-30 D27y+10 3which ordered pair is a solution to the question 4y=

Find the radius of a circle that has an area of 100π ft2

An airline is hiring five flight attendants. If eight people apply for the job, how many different groups of 5 attendants can the airline hire?

An architect builds a scale model of a skyscraper for a land development proposal. The model is 2 ft tall. The scale of the model is 1 in. : 7.2 m. How tall is the proposed skyscraper in meters? Show your work.

So if you have y=1/4x-1 and y = 1/4x+5 what are x and y