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4 years ago

What's the extraneous solution for |x-9|=4x

Mathematics

2 answers:

notsponge [240]4 years ago

6 0

Ask Siri my friend jdhdbdbdndn

Mashcka [7]4 years ago

6 0

Answer:

x = -3

Step-by-step explanation:

An extraneous equation is just an equation that you can solve, but the answer won't work when you check it.

x - 9 = 4x

-3 - 9 = 4(-3)

|-12| $\neq$ -12

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Jai Narayan sells two radio sets for 2288 each.

san4es73 [151]

Answer:

Step-by-step explanation:

S.P of each radio=$ 2288

Total S.P= $2\times 2288=$ $4576

Gain=10%

Lose=10%

C.P= $\frac{S.P\times 100}{100+gain(in\;percent)}$

C.P= $\frac{S.P\times 100}{100-loss(in\;percent)}$

By using the formula

C.P of one radio= $\frac{2288\times 100}{110}=$ $2080

C.P of another radio= $\frac{2288\times 100}{100-10}$ =$2542.2

Total C.P of two radios=2080+2542.2=$4622.2

Total C.P >Total S.P

Loss=S.P-C.P

Loss=4622.2-4576=$46.2

Loss%= $\frac{Loss}{C.P}\times 100$

Loss %= $\frac{46.2}{4622.2}\times 100=$ 1%

Hence, his loss 1%

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3 years ago

What is the slope of (-2,2) (-4,-4)

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Answer:

Step-by-step explanation:

slope = (y2-y1)/(x2-x1)

(-4-2)/(-4--2)

-6/-2

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3 years ago

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Find the equation of a line that passes through the point (0,1) and has a gradient of 2.

Usimov [2.4K]

Answer:

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Step-by-step explanation:

Given point (0, 1) and the slope m = 2

<u>Use point- slope form to find the equation of the line:</u>

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