H = 3v/πr2
isolate the variable by dividing each side by factors that dont contain the variable.
5x^2 + x - 2= 0
Use the quadratic formula:-
x = [ -1 +/- sqrt(1^2 - 4*5*-2)] / 2*5
= -1 +/- sqrt 41 / 10
= -0.1 + 0.64 , -0.1 - 0.64
= 0.54, -0.74 Answer
Answer:
So a square is a special kind of rectangle, it is one where all the sides have the same length. Thus every square is a rectangle because it is a quadrilateral with all four angles right angles. However not every rectangle is a square, to be a square its sides must have the same length.
Hope this helps!
Answer:
The first one, 14 weeks of dance classes.
Step-by-step explanation:
She paid $753.95 as a total for all of the classes, not just one week. She paid her registration free, which you subtract from 753.95 to get 630.00. She pays 45 per week, so you divide 630 by 45 to get the amount of weeks she attended dance classes, or 14 weeks.