What is the value of a in the equation 5a - 10b = 45, when b = 3?

When a rectangle is dilated, how do the perimeter and area of the rectangle change?

Look at this pattern ; 1,4,9, number 10000 belongs in this pattern . what’s the place of this number?

Answer asap ill give ! ’ a sample of radioactive material decays over time. the number of grams, y , of the material remaining x days after the sample is discovered is given by the equation y = 10(0.5)^x. what does the number 10 represents in the equation? a. the half-life of the radioactive material, in days b. the amount of the sample, in grams, that decays each day c. the time, in days, it will take for the samples to decay completely d. the size of the sample, in grams, at the time the material was discovered