A scientist wants an 81milliliter of saline solution with a concentration of 5% she has concentrations of 3% and 9%. How much of each solution must she use to get the desired concentration

Aplot of land has been surveyed for a new housing development with borders ab, bc, dc, and da. the plot of land is a right trapezoid with a height of 60 feet and an opposite leg length of 65 feet

Y= 4x + 3 y = - 1 4 x - 5 what is the best description for the lines represented by the equations?

What are two numbers that add up to -9 and multiply to -10 best answer gets branliest and 100 extra points