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进阶
\( (x−6)−8 \)\( \left(y+2\right) \)\( =131 \)
\( \left(x-6\right)+8\left(y+2\right)=438 \)
The solution to the given system of equations is (x, y). What is the value of \( 10\left(x-6\right) \) ?
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二元一次方程组求解挑战
\( x=2+8y \)
\( x=4-8y \)
The solution to the given system of equations is (x, y). What is the value of 2x?
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二元一次方程组求解挑战
\( y=\frac{x}{3}+8 \)
\( y=-\frac{x}{3}+50 \)
The solution to the given system of equations is (x, y). What is the value of 2y?
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二元一次方程组求解进阶
\( x=2 \)
\( y=\frac{1}{x+8} \)
The graphs of the given equations intersect at the point (x , y) in the xy-plane. What is the value of y?
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二元一次方程组求解挑战
\( y=\frac{x}{3}+2 \)
\( y=-\frac{x}{3}+60 \)
The solution to the given system of equations is ( x, y ) . What is the value of 2y?
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二元一次方程组求解进阶
\( \frac{x-7}{5}+\frac{y+8}{4}=0 \)
\( 3x+4y=0 \)
The solution to the given system of equations is (x, y). What is the value of x + y?
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二元一次方程组求解进阶
Jackson mows lawns in the summer. When Jackson mows a lawn with a fence he charges $1.03 per minute. When Jackson mows a lawn without a fence, he charges $0.56 per minute. Jackson spends a total of 15 hours mowing lawns with and without a fence in a week and charges a total of $701.40 for mowing lawns during that week. How many minutes does Jackson spend mowing lawns with a fence during that week?
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二元一次方程组求解进阶
\( \frac{9}{2}x+7y=30 \)
\( \frac{5}{2}x+7y=26 \)
The solution to the given system of equations is (x, y). What is the value of \( \frac{19}{2}x+21y \)?
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二元一次方程组求解挑战
\( y=6x+17 \)
\( -7x-y=35 \)
What is the solution (x, y) to the given system of equations?
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二元一次方程组求解挑战
\( 5\left(3x\right)+4\left(8y\right)=16 \)
\( -5\left(3x\right)+4\left(8y\right)=16 \)
The solution to the given system of equations is (x, y). What is the value of \( 3x−8y \)?
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二元一次方程组求解进阶
\( y=x^{2}+1.7 \)
\( y=1.7−x \)
Which graph represents the given system of equations?
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二元一次方程组求解进阶
\( 19=x+y \)
\( x-y=9 \)
The solution to the given system of equations is (x, y). What is the value of x?
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