New SAT Math - No Calculator : New SAT Math - No Calculator

Study concepts, example questions & explanations for New SAT Math - No Calculator

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Example Questions

Example Question #41 : New Sat Math No Calculator

What is ?

Possible Answers:

Correct answer:

Explanation:

Solve for  by merging the equations so that  gets factored out.  To do so, multiply the lower equation by  (so that  at the top is subtracted by )

Example Question #42 : New Sat Math No Calculator

If , then  

Possible Answers:

Correct answer:

Explanation:

,

Example Question #43 : New Sat Math No Calculator

Expand the following expression found below:

Possible Answers:

Correct answer:

Explanation:

If a problem asks you to expand an expression, you must use the Distributive property. If you are using the FOIL method, you first multiply the first term in each parentheses by each other, followed by the outside terms, then the inside terms, and then the last terms. This is illustrated below. 

 Screen shot 2015 10 27 at 1.54.06 pm

First, you multiply  which equals 

Second, you multiply 

Third, you multiply 

Last, you multiply 

Then you simply rearrange them in order of exponents to get 

Example Question #44 : New Sat Math No Calculator

If , then which of the following must be also true? 

Possible Answers:

Correct answer:

Explanation:

Example Question #45 : New Sat Math No Calculator

What is the value of the -intercept for the line given below?

 

Possible Answers:

Correct answer:

Explanation:

The x-intercept is where the line crosses the x-axis. In other words, 

This gives:

Subtracting 98 from both sides gives:

Dividing both sides by 14 gives the final answer:

Example Question #41 : Algebra

Which of the following lines is parallel to:

 

Possible Answers:

Correct answer:

Explanation:

First write the equation in slope intercept form. Add  to both sides to get . Now divide both sides by  to get . The slope of this line is , so any line that also has a slope of  would be parallel to it. The correct answer is  .

Example Question #46 : New Sat Math No Calculator

Find the extraneous solution for 

Possible Answers:

There are no extraneous solutions

Correct answer:

Explanation:

 

Now lets plug these values into our original equation.

 

For 

So this isn't an extraneous solution.

 

For 

Since  is an extraneous solution.

 

 

 

Example Question #47 : New Sat Math No Calculator

Solve

Possible Answers:

Correct answer:

Explanation:

First multiply by the denominator on each side

Expand left side, and solve for 

Example Question #48 : New Sat Math No Calculator

Given:

x+y-2=0

 

How many solutions will there be for the system of equations?

Possible Answers:

Correct answer:

Explanation:

Use the substitution method to solve the system of equations. There are two ways to do this - either substitute the first equation into the second, or the second equation into the first. Since the second equation is already solved for one variable, we will choose the latter.

Now factor the equation:

 or 

 

For this particular question, you could stop right here, as you can only need to know the number of solutions not the ordered pair of the solutions. Here there are two solutions. The ordered pairs would be:

 and 

 

Example Question #49 : New Sat Math No Calculator

Bob and Jill go eat dinner at a fancy restaurant. Bob gets lobster and Jill gets crab legs. The lobster cost , and the crab legs cost . If they leave  tip, how much is the combined bill?

Possible Answers:

Correct answer:

Explanation:

To do this, we need to sum up each meal, and then convert the tip into a decimal.

 

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