10. mountain view middle school students work on square desktops. the area of the square desk
surface is 4 square feet. what is the length of each side of the desktop?

11. a square has an area of 81 square meters.
a. find the length of one side of the square.
b. find the perimeter of the square.

12. the area of a circle is 121 square units. the formula for the area of a circle is a=tr. what
is the radius of the circle?

Marco has $38.43 dollars in his checking account. his checking account is linked to his amazon music account so he can buy music. the songs he purchases cost $1.29. part 1: write an expression to describe the amount of money in his checking account in relationship to the number of songs he purchases. part 2: describe what the variable represents in this situation.

Do social recommendations increase ad effectiveness? a study of online video viewers compared viewers who arrived at an advertising video for a particular brand by following a social media recommendation link to viewers who arrived at the same video by web browsing. data were collected on whether the viewer could correctly recall the brand being advertised after seeing the video. the results are given below.correctly recalled the brandarrival 409153browsing20484b. conduct the hypothesis test, using the 0.025 level of significance.what is the value of the test statistic? χ2stat=what is the p-value? p-value=is this value significant atα=0.025?

Solve each quadratic equation by factoring and using the zero product property. [tex]x^2+6x+8=0[/tex]