Alison is preparing for a math contest each day she works on multiplication problems for 20 minutes and division problems for 10 minutes how many minutes does alison practice multiplication and division problems in 15 days?

Sherina wrote and solved the equation. x-56=230 x-56-56=230-56 x=174 what was sherina’s error? sherina’s work is correct. sherina only needed to subtract 56 from 230. sherina made a subtraction error when subtracting 56 from 230. sherina should have added 56 to both sides of the equation.

Which point on the x-axis lies on the line that passes through point c and is parallel to lino ab?

Select all the correct answers. what is 221,000,000,000,000,000,000 expressed in scientific notation?