Which expression is equal to 3/√7? a. 3√7/7 b. 3√7/49 c.7/3√7 d.21/√7

3√7

(Answer A).

   7

Step-by-step explanation:

The expression 3/√7 has a radical in the denominator.  Most times when you're asked to simplify such an expression, you're actually being asked to rationalize the denominator:  remove the √ sign from the denominator.

Given 3/√7, the first thing we need to do is the multiply both numerator and denominator by √7.

This results in:

3√7

(Answer A).

   7

i think it would be 43 movies that would have to be watched.

step-by-step explanation:

think about it. for the second plan, every month is 8 dollars. 8 x 12= 96. so thats the number for the second plan. now for the first plan, its annual meaning you have to pay 10 dollars every year. so now you have to get an equivalent amount of 86 since 96-10=86. 86 divided by 2 since every movie costs 2$ then you would have to watch 43 movies a year to get the same as the second plan. i really hoped this . have a wonderful day as well!

when rotating a figure 180 degrees, imagine that you are able to take the figure and turn it clockwise or counterclockwise around a center point. to rotate a figure 180 degrees, you will need to apply the rule (x, y) → (-x, -y). start by using a coordinate grid with coordinates for each vertex of the figure. the center point of the coordinate grid is located at (0, 0), which is what you will rotate the figure around. write down the original coordinates of the shape you are going to rotate. then, apply the rule. for example, coordinate (1, 2) becomes (-1, -2). another example would be, coordinate (-4, -2) becoming (4, 2). after you change each original coordinate to the rotated coordinate, you will draw your new figure.

step-by-step explanation: