Maths-
SAT
Easy
Question
2x − y = −4
2x + y = 4
For the solution of the system of equations above, what is the value of x ?
- -4
- -2
- 0
- 2
The correct answer is: 0
2x – y = -4
2x + y = 4
4x = 0
x = 0
Related Questions to study
Maths-
The line graph above shows the average price of one metric ton of oranges, in dollars, for each of seven months in 2014.
In 2014, the average price of one metric ton of oranges decreased by 2.36% from January (not shown) to February. Which of the following is closest to the price of one metric ton of oranges in January 2014?
The line graph above shows the average price of one metric ton of oranges, in dollars, for each of seven months in 2014.
In 2014, the average price of one metric ton of oranges decreased by 2.36% from January (not shown) to February. Which of the following is closest to the price of one metric ton of oranges in January 2014?
Maths-SAT
Maths-
8x − 2x(c + 1) = x
In the equation above, c is a constant. If the equation has infinitely many solutions, what is the value of c ?
8x − 2x(c + 1) = x
In the equation above, c is a constant. If the equation has infinitely many solutions, what is the value of c ?
Maths-SAT
Maths-
The function g is defined as . What is the value of g(−30) ?
The function g is defined as . What is the value of g(−30) ?
Maths-SAT
Maths-
The functions f and g are defined by f (x) = 4x and g(x) = x2. For what value of x does f (x) − g(x) = 4 ?
The functions f and g are defined by f (x) = 4x and g(x) = x2. For what value of x does f (x) − g(x) = 4 ?
Maths-SAT
Maths-
If x + 3 = 2x − 2, what is the value of x − 4 ?
If x + 3 = 2x − 2, what is the value of x − 4 ?
Maths-SAT
Maths-
2x(x2 + 1) + (2x2 − 2x)
Which of the following expressions is equivalent to the expression above?
2x(x2 + 1) + (2x2 − 2x)
Which of the following expressions is equivalent to the expression above?
Maths-SAT
Maths-
One hundred park-district members will be selected to participate in a survey about selecting a new park-district coordinator. Which of the following methods of choosing the 100 members would result in a random sample of members of the park district?
One hundred park-district members will be selected to participate in a survey about selecting a new park-district coordinator. Which of the following methods of choosing the 100 members would result in a random sample of members of the park district?
Maths-SAT
Maths-
A physician prescribes a treatment in which a patient takes 2 teaspoons of a medication every 6 hours for 5 days. According to the prescription, how many teaspoons of the medication should the patient take in a 24-hour period?
A physician prescribes a treatment in which a patient takes 2 teaspoons of a medication every 6 hours for 5 days. According to the prescription, how many teaspoons of the medication should the patient take in a 24-hour period?
Maths-SAT
Maths-
A physician prescribes a treatment in which a patient takes 2 teaspoons of a medication every 6 hours for 5 days. According to the prescription, how many teaspoons of the medication should the patient take in a 24-hour period?
A physician prescribes a treatment in which a patient takes 2 teaspoons of a medication every 6 hours for 5 days. According to the prescription, how many teaspoons of the medication should the patient take in a 24-hour period?
Maths-SAT
Maths-
If 6 • 2k = 36, what is the value of 4k − 2 ?
If 6 • 2k = 36, what is the value of 4k − 2 ?
Maths-SAT
Maths-
The line graph above shows the average price of one metric ton of oranges, in dollars, for each of seven months in 2014.
Between which two consecutive months shown did the average price of one metric ton of oranges decrease the most?
The line graph above shows the average price of one metric ton of oranges, in dollars, for each of seven months in 2014.
Between which two consecutive months shown did the average price of one metric ton of oranges decrease the most?
Maths-SAT
Maths-
If what is the value of 4x ?
If what is the value of 4x ?
Maths-SAT
Maths-
The table shows several values of x and their corresponding values of y, where k is a nonzero constant. If the relationship between a and y is linear, which of the following defines this relationship?
The table shows several values of x and their corresponding values of y, where k is a nonzero constant. If the relationship between a and y is linear, which of the following defines this relationship?
Maths-SAT
Maths-
The equation p = 14.7 + 0.439d approximates the pressure p, in pounds per square inch, exerted on a diver at a depth of d feet (ft) below the surface of the water. What is the increase in depth that is necessary to increase the pressure by 1 pound per square inch?
The equation p = 14.7 + 0.439d approximates the pressure p, in pounds per square inch, exerted on a diver at a depth of d feet (ft) below the surface of the water. What is the increase in depth that is necessary to increase the pressure by 1 pound per square inch?
Maths-SAT
Maths-
The Conowingo Reservoir had an original storage capacity of 300,000 acre-feet at the end of 1928, the year in which it was built. Starting in 1929, sediment carried
downstream by the Susquehanna River collected in the reservoir and began reducing the reservoir's storage capacity at the approximate rate of 1,700 acre-feet
per year.
What was the approximate storage capacity, in acre-feet, of the reservoir at the end of 1993?
The Conowingo Reservoir had an original storage capacity of 300,000 acre-feet at the end of 1928, the year in which it was built. Starting in 1929, sediment carried
downstream by the Susquehanna River collected in the reservoir and began reducing the reservoir's storage capacity at the approximate rate of 1,700 acre-feet
per year.
What was the approximate storage capacity, in acre-feet, of the reservoir at the end of 1993?
Maths-SAT