All ISEE Upper Level Math Resources
Example Questions
Example Question #134 : Equations
Solve for :
Example Question #841 : Isee Upper Level (Grades 9 12) Mathematics Achievement
What is the value of the expression ?
The first step here is to recognize you need to simplify within the radical before moving outside of the radical (avoid a common mistake of getting the square root of 169 and 144 before subtracting). Thus, you subtract 144 from 169, which gives you a difference of 25:
= =
Then you can take the square root of 25, which gives you the answer of 5.
Example Question #842 : Isee Upper Level (Grades 9 12) Mathematics Achievement
Solve for :
Example Question #141 : How To Find The Solution To An Equation
A sweater was originally $25, but then marked down to $22. What is the percent decrease?
3%
14%
19%
12%
25%
12%
To find the percent decrease, remember this formula: difference/original. First, find the difference between the prices. This is $3. Then divide that by the original price, which is $25. . Since the question is asking for a percentage, move the decimal over to the right two places and you get 12%.
Example Question #142 : How To Find The Solution To An Equation
Solve for x.
To solve for x, first subtract 0.4 from both sides. This gives you . Then, multiply both sides by 3. This yields 2.4 for x.
Example Question #845 : Isee Upper Level (Grades 9 12) Mathematics Achievement
Simplify:
First, simplify the radical on the numerator. can be simplified to , which is also . Then, put that over the denominator: . Then, simplify like terms. 2 goes into both the numerator and denominator, so that final answer is .
Example Question #143 : Equations
Solve for x in the equation below:
The first step is to simplify the numerator in the right side of the equation.
Next, we square each side of the equation.
Example Question #847 : Isee Upper Level (Grades 9 12) Mathematics Achievement
Which of the answer choices below has a value that is different from the others?
Therefore, has a value that is different from the other expressions.
Example Question #848 : Isee Upper Level (Grades 9 12) Mathematics Achievement
Solve for in this equation:
In order to solve for , cross multiplication must be used. Applying this, the equestion to be solved will be:
Next, each side must be divided by 5. This results in:
The square root of each side is now taken. This gives us:
This reduces to:
Finally, we rationalize the denominator:
Example Question #143 : How To Find The Solution To An Equation
On average, 1 in 9 peanuts that are harvested will only have one pod instead of two pods. Of those one-pod peanuts, three quarters of them will be smaller than the average peanut.
If 900 peanuts are harvested, how many will be one-pod peanuts that are smaller than average in size?
If there are 900 peanuts and 1 in 9 will be one-podded, that means that 100 will be one-podded.
Three quarters of these 100 one-podded peanuts will be of smaller than average size. Three quarters of of 100 is 75. Therefore, 75 is the correct answer.