Sat_数学考试试题(11)

Sat 数学历年真题

Since we only need the percentage of butterfly students, just use the butterfly and total numbers.

Butterfly students = 9 Total students = 30

Know percentage formula:

Whole

30 Answer C is correct. Test 1 Section 3 Question 6

Coordinate Plane Problem. There will be many of these.

Let’s write our given: AB=CD

Remember that in (x, y) the x means how far right (positive) or left (negative) the point is. The y means how far up (positive) or down (negative) it is. That’s it.

What are we looking for? The value of t. Where is t? It’s the y-value for point B (2,t). How do we get there?

The key to this problem is AB=CD. It means that the two lines have the same length.

The length of vertical lines ONLY comes from the yvalues of its endpoints. To get the length, subtract the smaller one from the larger one, in this case:

3 - t = length of AB*

* Remember, make variables your friends. Just because 3-t doesn’t give you a number, don’t give up.

The length of horizontal lines ONLY comes from the xvalues of its