SAT數(shù)學(xué)練習(xí)題5道.

　　下面為大家整理的是5道SAT數(shù)學(xué)練習(xí)題的內(nèi)容，后面都附有詳細(xì)的答案解析。SAT數(shù)學(xué)考試是非常注重對考生實際運用知識點能力的考察的，所以大家在備考的時候，一定要多加練習(xí)才行。下面我們來看看詳細(xì)內(nèi)容吧。

　　有問題?找免費的澳際專家咨詢!

　　1.Read the following SAT test question and then click on a button to select your answer.

　　If , and , what is ?

　　Answer Choices

　　(A)

　　(B)

　　(C)

　　(D)

　　(E)

　　2.If and , what is the value of ?

　　Answer Choices

　　(A)

　　(B)

　　(C)

　　(D)

　　(E)

　　3.A florist buys roses at apiece and sells them for apiece. If there are no other expenses, how many roses must be sold in order to make a profit of ?

　　Answer Choices

　　(A)

　　(B)

　　(C)

　　(D)

　　(E)

　　4.If two sides of the triangle above have lengths and , the perimeter of the triangle could be which of the following?

　　. 　　. 　　.

　　Answer Choices

　　(A) only

　　(B) only

　　(C) only

　　(D) and only

　　(E) , , and

　　5.The function , dined for, is graphed above. For how many different values of is ?

　　Answer Choices

　　(A) None

　　(B) One

　　(C) Two

　　(D) Three

　　(E) Four

　　Explanation　

　　1.The correct answer is E

　　If , and , then . Therore, .

　　2.The correct answer is C

　　Since can be written as and can be written as , the lt side of the equation is . Since , the value of is .

　　3.The correct answer is E

　　Each rose brings a profit of minus , or . The number of roses that need to be sold to make a profit of is . This is roses.

　　4.The correct answer is B

　　In questions of this type, statements , , and should each be considered independently of the others. You must determine which of those statements could be true.

　　Statement cannot be true. The perimeter of the triangle cannot be , since the sum of the two given sides is without even considering the third side of the triangle.

　　Continuing to work the problem, you see that in , if the perimeter were , then the third side of the triangle would be , or . A triangle can have side lengths of , , and . So the perimeter of the triangle could be .

　　Finally, consider whether it is possible for the triangle to have a perimeter of . In this case, the third side of the triangle would be . The third side of this triangle cannot be , since the sum of the other two sides is not greater than . By the Triangle Inequality, the sum of the lengths of any two sides of a triangle must be greater than the length of the third side. So the correct answer is only.

　　5.The correct answer is E

when the point is on the graph of . Drawing the line , as in the graph below, shows that the is equal to for four values of between and .

　　以上就是關(guān)于SAT數(shù)學(xué)練習(xí)題的全部內(nèi)容，包括了幾何和代數(shù)兩大部分。大家可以在備考自己的SAT數(shù)學(xué)考試的時候，進(jìn)行適當(dāng)?shù)膮⒖己徒梃b。

更多SAT數(shù)學(xué)相關(guān)：

北京SAT數(shù)學(xué)培訓(xùn)

SAT數(shù)學(xué)高分備考經(jīng)驗分享

三道SAT數(shù)學(xué)練習(xí)題目

SAT數(shù)學(xué)考試常識之計算器