15 points need asap will mark brainlest sergio is asked to write one million in scientific notation. he writes 10 6 and gets it wrong.
why was he wrong?
he should have written 10 5.
he should have written 1 × 10 5.
he should have written 10 6.
he should have written 1 × 10 6.

Julius sold five times as many computers as sam sold last year. in total, they sold 78 computers. how many computers did julius sell?

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

I’m still confused on how to work the percentages