Doug’s family buys 7 postcards while on vacation. each postcard costs 0.25$ including tax. how can doug use place value patterns to check his answer.

7(x - 2) = 3(x + 4) solve the following equation. then enter your answer in the space provided using mixed number format.

In the diagram of circle o, what is the measure of zabc?

In dire need~! describe how to use area models to find the quotient 2/3 divided by 1/5. check your work by also finding the quotient 2/3 divided by 1/5 using numerical operations only.