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LenKa [72]
2 years ago
12

7D%20%20%3D%200" id="TexFormula1" title=" \frac{x + 1}{2x - 1} - \frac{x - 1}{2x + 1} = 0" alt=" \frac{x + 1}{2x - 1} - \frac{x - 1}{2x + 1} = 0" align="absmiddle" class="latex-formula">

I need some help
Mathematics
1 answer:
lubasha [3.4K]2 years ago
8 0

x=0

because you must

determine the undefined range

write all numerators above the common denomonator

multiply the parenthesis

collect the alike terms

remove parenthesis

eliminate the opposites collect the like terms

set the numerator equal to 0

divide both sides by 6

check if thesolution is the defined range

if so then you would find your answer X=0

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Joel can run around a 14– mi track in 81 sec, and Jason can run around the track in 69 sec. If the runners start at the same poi
Alenkasestr [34]

Answer:37.2 sec

Step-by-step explanation:

Given

Joel takes 81 sec for 14 mile long track

speed of joel \frac{14}{1.35} mi/min=10.37 mi/min

Jason takes 69 sec for 14 mi track

so jason speed is \frac{14}{1.15} mi/min=12.17 mi/min

if both starts from same spot in opposite direction then

\frac{x}{10.37}=\frac{14-x}{12.17}

where x is distance covered by Joel

then x=6.44 miles

therefore time required

t=\frac{6.44}{10.37}=0.621 min\approx 37.2 sec

8 0
3 years ago
The perimeter of a triangle is 19z-7. One side is 5z-9 and one side is 8z+3. What is the remaining side ?
insens350 [35]
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= 19z - 7 - (13z - 6)
= 19z - 7 - 13z + 6
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answer
remaining side = </span> 6z - 1
3 0
2 years ago
A pair of boots were $45 they were on sale for $38.25 what percent were they off
Mashutka [201]

Answer:

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Step-by-step explanation:

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Professor Turner wrote the expression below on the chalkboard for his team at the Research Center. He asked the scientists there
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Answer:

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Step-by-step explanation:

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saw5 [17]

Answer:

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Step-by-step explanation:

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