5272道题目5525 条题源记录 · 相同内容已合并
一元一次方程与代数求值进阶
The kinetic energy K, in joules, of an object is given by the formula \( K=\frac{1}{2}mv^2 \), where m is the mass of the object, in kilograms, and v is the velocity of the object, in meters per second. If the kinetic energy of a certain object can be found by using the formula \( K=34v^2 \), what is the mass of the object, in kilograms?
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一元一次方程与代数求值进阶
\( 11x+50=160 \)
Which equation has the same solution as the given equation?
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一元一次方程与代数求值进阶
Which expression is equivalent to\( \left(3c+9\right)-\left(4c^3-5\right) \)?
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一元一次方程与代数求值进阶
Which expression is equivalent to \( \left(5x^3-3x+8\right)-\left(9x^6+5x-3\right) \)?
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一元一次方程与代数求值挑战
What is an equation of the graph shown?
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一元一次方程与代数求值进阶
\( 5\left(x-4\right)+6=3\left(x-2\right)+22 \)
What value of x is the solution to the given equation?
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一元一次方程与代数求值进阶
Which expression is equivalent to \( 30y+80y \)?
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一元一次方程与代数求值进阶
What value of p is the solution to the equation \( 8p-9p=8 \)?
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一元一次方程与代数求值挑战
\( 0.10x+0.20y=0.17(x+y) \)
The equation gives a volume x, in gallons, of a 10% saltwater solution that could be mixed with a volume y, in gallons, of a 20% saltwater solution to produce a 17% saltwater solution. According to this equation, what volume, in gallons, of the 20% saltwater solution could be mixed with 90.0 gallons of the 10% saltwater solution to produce a 17% saltwater solution? (Assume that the volume of the mixture is the sum of the volumes of the two solutions before they were mixed.)
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一元一次方程与代数求值挑战
\( \frac{1}{4xy}+xyz=\frac{1}{3y} \)
In the given equation x, y and z are positive numbers. Which expression is equivalent to y ?
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一元一次方程与代数求值挑战
If \( 2(5x)=6 \), what is the value of \( 5x \)?
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一元一次方程与代数求值进阶
If \( \frac{x}{y}=4 \) and \( \frac{24x}{ny}=4 \), what is the value of n?
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