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2 years ago

Y=3x-5x=32.7+4.1y-6.8-x-y=92x+y=-18y-5=x Determine if they are standard form or not standard form

Mathematics

1 answer:

mote1985 [20]2 years ago

4 0

The standard form of a linear equation is:

$Ax+By=C$

A and B are integers

C is a constant

Then, of the given equation the next are writen in standard form:

$\begin{gathered} -x-y=0 \\ \\ 2x+y=-1 \\ \end{gathered}$

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What is 4/7 ÷ 6/9 showing the work

RSB [31]

First flip the second fraction

4/7 divided by 9/6

Next multiply 4 x 9 which is 36

Then multiply 7 x 6 which is 42

Then divide the fraction 36/42

Which since it's not even it would be in decimal form it would be 0.9

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3 years ago

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What is 2 thirds divided by one half?

erastovalidia [21]

Its 2/3 divided in half.
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3 years ago

Help meh with an explication

Over [174]

Answer:

$\frac{6}{\sqrt 2}= 3\sqrt 2$

Step-by-step explanation:

Given

$\frac{6}{\sqrt 2}$

Required

Rationalize

$\frac{6}{\sqrt 2}$

To do this, we simply multiply by $\frac{\sqrt 2}{\sqrt 2}$

$\frac{6}{\sqrt 2} * \frac{\sqrt 2}{\sqrt 2}$

This gives:

$\frac{6 * \sqrt 2}{\sqrt 2 * \sqrt 2}$

$\frac{6 \sqrt 2}{2 }$

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3 years ago

The equations y = 5x and y = –1∕5x + 4 represent what types of lines?

docker41 [41]

Answer:

It might be perpendicular lines

Step-by-step explanation:

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3 years ago

"An economist wants to estimate the mean per capita income (in thousands of dollars) for a major city in Texas. Suppose that the

leva [86]

Answer: ($19.8, $20.8)

Step-by-step explanation:

Confidence interval for mean : $\overline{x}\pm z^*\dfrac{\sigma}{\sqrt{n}}$ , where $\overline{x}$ = Sample mean, n= sample size, $\sigma$ = population standard deviation, z* = two tailed critical z-value.

Given: $\overline{x}$ = $20.3

n= 2333

$\sigma$ = $11.3

For 98% confidence, z* = 2.326

Then, the98% confidence interval for population mean will be:

$20.3\pm (2.326)\dfrac{11.3}{\sqrt{2333}}\\\\=20.3\pm (2.326)\dfrac{11.3}{48.3011387}\\\\=20.3\pm (0.544165224825)\\\\\approx 20.3\pm 0.5\\\\=(20.3-0.5,\ 20.3+0.5)\\\\=(19.8,20.8)$

Hence, the 98% confidence interval for the mean per capita income in thousands of dollars = (19.8, 20.8)

3 0

3 years ago