Sat 数学历年真题

3 3 4 4 x2y 3 3 4 4

The 3’s on the left cancel out, as do the 4’s. We’re left

2 = 4 AND y = 3

What’s the problem asking? The value of xy. Don’t we know both of those variables now? Yes. Plug ‘em in. xy = ? 4×3 = 12

D is the correct answer.

2

2

Test 1 Section 3 Question 8

Geometry Problem. MARK UP THE DRAWING.

Let’s write our givens:

Radius of Circle A is 2.

Radii of Circle B and C are both 4.

What are looking for? The radius of the big circle.

Find the radius of the largest circle: 2 + 4 + 4 = 10