5272道题目5525 条题源记录 · 相同内容已合并
二元一次方程组求解基础
The graphs of two linear equations are shown. A third linear equation is graphed in this xy-plane such that all three lines intersect at exactly one point. Which of the following could be the third linear equation?
I. \( 16x+8y=-7 \)
II. \( -8x+16y=-1 \)
参考答案
二元一次方程组求解基础
\( y=8 \)
\( x=y+9 \)
The solution to the given system of equations is \( (x,y) \). What is the value of x?
\( x=y+9 \)
The solution to the given system of equations is \( (x,y) \). What is the value of x?
参考答案
二元一次方程组求解挑战
\( 6x-2y=5 \)
\( 3x+y=7 \)
The solution to the given system of equations is (x, y). What is the value of \( x+y \)?
\( 3x+y=7 \)
The solution to the given system of equations is (x, y). What is the value of \( x+y \)?
参考答案
二元一次方程组求解挑战
\( x+6y=-2 \)
\( 6x-y=25 \)
The solution to the given system of equations is (x, y). What is the value of \( 5x−7y \)?
\( 6x-y=25 \)
The solution to the given system of equations is (x, y). What is the value of \( 5x−7y \)?
参考答案
二元一次方程组求解基础
\( 6x-2y=5 \)
\( 3x+y=7 \)
The solution to the given system of equations is (x, y). What is the value of \( x+y \)?
\( 3x+y=7 \)
The solution to the given system of equations is (x, y). What is the value of \( x+y \)?
参考答案
二元一次方程组求解基础
\( y=(x+4) \)
\( y=3(x+4)^2 \)
A solution to the given system of equations is (x, y). What is one possible value of x?
\( y=3(x+4)^2 \)
A solution to the given system of equations is (x, y). What is one possible value of x?
参考答案
二元一次方程组求解基础
\( x=4 \)
\( y=7-x \)
The solution to the given system of equations is (x, y). What is the value of y?
\( y=7-x \)
The solution to the given system of equations is (x, y). What is the value of y?
参考答案
二元一次方程组求解进阶
\( -0.9y=0.8x+2.3 \)
\( 4y=-3x+17 \)
The solution to the given system of equations is (x, y). What is the value of x?
\( 4y=-3x+17 \)
The solution to the given system of equations is (x, y). What is the value of x?
参考答案
二元一次方程组求解挑战
\( y=(x-2)(x+7) \)
\( y=9x-18 \)
Which ordered pair (x, y) is the solution to the given system of equations?
\( y=9x-18 \)
Which ordered pair (x, y) is the solution to the given system of equations?
参考答案
二元一次方程组求解基础
\( x=5 \)
\( y=7-x \)
The solution to the given system of equations is (x, y). What is the value of y?
\( y=7-x \)
The solution to the given system of equations is (x, y). What is the value of y?
参考答案
二元一次方程组求解挑战
\( \frac{x-13}{6}+\frac{y+26}{3}=-5 \)
\( \frac{x-13}{3}-\frac{y+26}{6}=5 \)
The solution to the given system of equations is (x, y). What is the value of \( x−y \)?
\( \frac{x-13}{3}-\frac{y+26}{6}=5 \)
The solution to the given system of equations is (x, y). What is the value of \( x−y \)?
参考答案
二元一次方程组求解挑战
A biologist mixed a solution that is 0.10% sodium chloride by mass with a solution that is 0.25% sodium chloride by mass to obtain a new solution, which has a mass of 50.00 grams and contains 0.08 grams of sodium chloride. How many grams of sodium chloride are contained in the 0.10% sodium chloride solution the biologist used?
参考答案
