Translate the sentence into an equation. Twice the difference of a number and 7 is 5. Use the variable x for the unknown number.​

Which matrix can be multiplied to the left of a vector matrix to get a new vector matrix ?

Which is the equation of an ellipse with directrices at x = ±4 and foci at (2, 0) and (−2, 0)?

The dolphins at the webster are fed 1/2 of a bucket of fish each day the sea otters are fed 1/2 as much fish as the dolphins how many buckets of fish are the sea fed each day? simplify you answer and write it as a proper fraction or as a whole or mixed number