Three planes intersect in a space at a single point. One plane is given by 5x+2y+z =15 a second is -3x + 5y+4z=5; the last is 2x-2y+z =-3 use matrices and a graphing calculator to find the point intersection of the three planes

Dropping less than two inches per mile after emerging from the mountains, a river drains into the ocean. one day's discharge at its mouth, 5.6 trillion gallons, could supply all of country a's households for seven months. based on this statement, determine how much water an average household uses each month. assume that there are 100 million households in country a. country a uses approximately nothing gallons per household per month.

Aphrase is shown read the phrase and give me the answer

What is the length of the midsegment of a trapezoid with bases of length 15 and 25 ?