Hi, dalicaicedo!

Thank you for your comment. We realize that E seems to be correct. However, the dimensions and scale of Option E are incompatible with what is required to be correct in this case. Therefore, we will be modifying Option E to eliminate confusion.

Hi Kurshaad, Thank you for reaching out. For Question 11, if you have a look at the left and right sides of the object, you will notice that both sides are slanted. Hence, option D is the correct answer. The more practice you get in, the easier it will become to visualize these objects. Here is an i...

Hi jfu.green, Here is a step-by-step process in solving the equation: y = 3x^2 - 5x - 7 Step 1: multiply both sides by 12 12y = 36x^2 - 60x - 84 Step 2: add 109 to both sides so that the term on the right can be factored 12y + 109 = 36x^2 -60x +25 Step 3: Factor the right side 12y + 109 = (6x - 5)^2...

Hi jfu.green, We are given the details that the hypotenuse AB = 7 and side AC = 2. This means cos A = 2/7, which is approximately 0.29. For cosine angles of 0 degrees to 90 degrees: cos 0 degrees = sqrt(4) / 2 = 1 cos 30 degrees = sqrt(3) / 2 = 0.87 cos 45 degrees = sqrt(2) / 2 = 0.71 cos 60 degrees...

Hi jfu.green,

The circular mirror has a radius of 5, meaning that its diameter is 5 x 2 = 10.
Where the light begins at one edge of the mirror and travels through the center point to the other side, the total distance would have been 10. This fits with Answer Choice A. Hope this helps!

Hi, scottiford2711. Thank you for bringing this to our attention! We have identified the error. Our team is in the process of updating the question.

UPDATE: The error has been corrected.

Thank you for notifying us of the error. We have corrected the mistake - so, if you navigate back to the answer for the question, you will see that there are four cubes with two exposed sides (option C).