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3 years ago

10x +9 − x=12 Solve for X, What does X=?

Mathematics

2 answers:

Kazeer [188]3 years ago

7 0

Answer:

$\boxed{x=\frac{1}{3} }$

Step-by-step explanation:

$10x +9-x=12$

$9x +9=12$

$9x +9-9=12-9$

$9x =3$

$x=\frac{3}{9}$

$\boxed{x=\frac{1}{3} }$

marishachu [46]3 years ago

6 0

Answer:

10*0.3+9-0.3=12

Exact form

1/3

Decimal form

0.3

Hope this helps! :)

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antiseptic1488 [7]

Answer:45 degrees

Step-by-step explanation:

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2 years ago

According to Scarborough Research, more than 85% of working adults commute by car. Of all U.S. cities, Washington, D.C., and New

tamaranim1 [39]

Answer:

The 99% confidence interval for the mean commute time of all commuters in Washington D.C. area is (22.35, 33.59).

Step-by-step explanation:

The (1 - α) % confidence interval for population mean (μ) is:

$CI=\bar x\pm z_{\alpha /2}\frac{\sigma}{\sqrt{n}}$

Here the population standard deviation (σ) is not provided. So the confidence interval would be computed using the t-distribution.

The (1 - α) % confidence interval for population mean (μ) using the t-distribution is:

$CI=\bar x\pm t_{\alpha /2,(n-1)}\frac{s}{\sqrt{n}}$

Given:

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*Use the t-table for the critical value.

Compute the 99% confidence interval as follows:

$CI=27.97\pm 2.797\times\frac{10.04}{\sqrt{25}}\\=27.97\pm5.616\\=(22.354, 33.586)\\\approx(22.35, 33.59)$

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2 years ago

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lara [203]

Answer:

x = 94

Step-by-step explanation:

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2 years ago

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Answer:

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