Okay I'm going to give you an example and steps so you know how to do this
1+2x^2-4-x^2+x
Subtract 4 from 1 to get -3
2x^2-3-x^2+x
Subract x^2 from 2x^2 to get x^2
X^2-3+x
Move -3
x^2+x-3
Answer:
1/3 chance she'll get a 2 or 4
Step-by-step explanation:
The number cube has 6 sides, if we're trying to find the probability of what number (or numbers) she'll get it will have to be out of 6.
If we're trying to find the probability that she rolled a 2 or 4, we will say she has a 2/6 chance since they are 2 numbers out of 6.
2/6 can be simplified into 1/3.
Hope this helped!
Answer:
If all angles in a quadrilateral are right angles, then it’s a rectangle (reverse of the rectangle definition). (Actually, you only need to show that three angles are right angles — if they are, the fourth one is automatically a right angle as well.)
If the diagonals of a parallelogram are congruent, then it’s a rectangle (neither the reverse of the definition nor the converse of a property).
If a parallelogram contains a right angle, then it’s a rectangle (neither the reverse of the definition nor the converse of a property).
Tip: Do the following to visualize why this method works: Take an empty cereal box and push in the top flaps. If you then look into the empty box, the top of the box makes a rectangular shape, right? Now, start to crush the top of the box — you know, like you want to make it flat before putting it in the trash. As you start to crush the top of the box, you see a parallelogram shape. Now, after you’ve crushed it a bit, if you take this parallelogram and make one of the angles a right angle, the whole top has to become a rectangle again. You can’t make one of the angles a right angle without the other three also becoming right angles.
Step-by-step explanation:
I think it's b I hope these helpes