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挑战
\( x+y=53 \)
The given equation relates the total number of marble queen pothos stems, x, and the total number of snow queen pothos stems, y, a plant nursery propagates to create pothos plants. If 13 snow queen pothos stems are propagated, how many marble queen pothos stems are propagated?
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一元一次方程与代数求值进阶
\( 18qrt-2qrs+10rst=0 \)
In the given equation, q, r, s, and t are positive, and \( \frac{q}{t} \) is greater than 5. Which expression is equivalent to s?
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一元一次方程与代数求值基础
\( 5a=\frac{4b^2}{a}-20a \)
The given equation relates the positive variables a and b. Which equation correctly expresses a in terms of b?
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一元一次方程与代数求值基础
A chemist combines 25 grams of compound A, 35 grams of compound B, and x grams of compound C. The resulting mixture has a mass of 125 grams. What is the value of x?
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一元一次方程与代数求值基础
If \( 5c=15 \), what is the value of \( 5c−8 \)?
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一元一次方程与代数求值进阶
\( b^2+4c=7d \)
The given equation relates the real numbers b, c, and d, where \( d>\frac{4}{7}c \). Which equation correctly expresses b in terms of c and d ?
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一元一次方程与代数求值进阶
If \( 9x+4=67 \),what is the value of \( 90x+40 \)?
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一元一次方程与代数求值进阶
If\( 6x-8=4 \), what is the value of \( 6x+8 \)?
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一元一次方程与代数求值挑战
\( b^2+5c=6d \)
The given equation relates the real numbers b, c, and d and, where \( d>\frac{5}{6}c \) . Which equation correctly expresses b in terms of c and d ?
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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 \( 4p-5p=14 \)?
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一元一次方程与代数求值进阶
If \( 3-2x=42 \), what is the value of \( \frac{1}{6}(3-2x) \)?
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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 75.0 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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