If a⃗ .b⃗ =6 and |b⃗|= 12 and angle between them is 30 find the length of a⃗

If the graphs of the linear equations in a system are parallel, what does that mean about the possible solution(s) of the system? a. there are infinitely many solutions. b. there is no solution. c. there is exactly one solution. d. the lines in a system cannot be parallel.

The area of square garden is 300m squared. how long is the diagonal?

From the beginning of the day the temperature rose 15 degrees so that by 4 pm it was 87 degrees. what was the temperature at the start of the day