A strategy that is designed to help you maximize your score within the strict time limit of the SAT.
100
What is 1/4 in decimal and percent form?
.25 and 25%
100
((r^4)^3)/r^6=
r^6
100
How many degrees are in a straight line?
180degrees
100
What is the mean?
To find the mean you must add all the numbers and divide by how many numbers there are. For examples, 4, 5, 6, 7 = 22/4 =5.5 = mean
200
What is backsolve?
Backsolve is an SAT math strategy. You start with C and solve once you find the correct answer you stop. Answer choices do not have variables and its usually ascending or descending.
200
What is 40% of 80?
(40/100)x80=32
200
if 2^2x=16, then x=
2 because 2^2times2=2^4 which is 16
200
If a square has a side of length .75, what is the perimeter of the square?
.75(4)=3
200
define the mode and median
mode is the number that repeats the most
median is the middle number
300
What is plug-in?
Plug-in is a math strategy that is use to find the correct answer. There are usually variables in the answer choices.
300
If a machine makes 30 widgets every 20 minutes, how many widgets can it produce in 8 hours?
30/.33=x/8
x=720
1/3=.333
20/60=.333
300
the total cost in dollars, C, of repairing w watches is given by the function C(w)=2.5(w+1). How much more does it cost to repair 9 watches than to repair 3 watches?
substitute 9 for the w to get 25 and then substitute in 3 w to get 10 then subtract them 25-10=15
300
A triangle has a perimeter of 23. If the triangle had sides with lengths x-3, 2x-4 and x+2. What is the length of its longest side?
What is the difference between plug-in and backsolve?
Plug-in questions have variables in the answer choices while backsolve does not. You also have to plug-in every answer choice while in backsolve you start with c and then determine whether you go up or down. You also choose a number to plug in to the variable. Once you find the correct answer you stop for backsolve. Backsolve - answer choices are either ascending or descending.
400
it takes 15 gallons of paint to fully cover 90 walls. at this rate, how many gallons of paint are needed to fully cover 6 walls?
15:90
50/90=x/6
x=1
400
What is the slope of a line parallel to y=-3x+1
-3
400
what is the circumference of a circle that has an area of 36pie?
the average (arithmetic mean) age of 5 people is 25. IF four of the people are 20 years old, how many years old is the fifth person?
(4x20+x)/5=25
80+x=25x5
80+x=125
-80 -80
x=45
500
How many questions are in the three sections of the Math SATs?
54
500
There are 400 boys and 300 girls in a certain school. If 25 percent of the boys are seniors and 20 percent of the girls are seniors, then how many seniors are there in the school?
((25/100)x400)+((20/100)x300)=160
500
in the xy-plane, line m has the equation y=4x+k and contains the point (2,13). What is the value of k?
y=4x+k
13=4(2)+k
-8 -8
5=K
500
If the length of two sides of an isosceles triangle are 4 and 7, what is the length of the third side?
it cannot be determine from the information give. we know that the unknown side must either be 4 or 7 but we cannot determine if it is 4 or 7 since an isosceles triangle has two equal sides.
500
A number between 1 and 25 is selected at random. What is the probability that the number is prime?
Prime numbers:2, 5, 7, 11, 13, 17, 19, 23. 1 is not a prime number. the answer is 8/25