One number is 2 times another number plus 3. their sum is 21. find the numbers. if x represents the smaller number, which of the following equations could be used to solve the problem? 2x + 3 = 21 3x + 3 = 21 3x + 6 = 21

What rule describes a dilation with a scale factor of 4 and the center of dilation at the origin?

Grading scale 1 has the following weights- (tests- 50% quiz- 25% homework- 15% final exam- 10%). calculate your final average if your performance in the class is as follows-test grades- {88, 84, 90, 75, 70, 81); quiz grades- {88, 67, 90, 90, 45, 99, 76, 98, 100}; homework- 90; final exam- 75

1.multiply and simplify if possible. √7x (√x − 7√7) 2. what is the simplest form of the radical expression? 33√2a−63√2a