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3 years ago

Graph the inequality on the axes below. Plz help this is due tonight! I’ll give you brainliest!

Mathematics

2 answers:

abruzzese [7]3 years ago

8 0

hope it help if not let me k ow and I'll find a way to explain it :>

Vlada [557]3 years ago

5 0

Answer:

If written in Standard form this equation would be:

$y \geq \frac{x}{3} + (-\frac{18}{3} )$

Now i graphed this equation in Desmos and here is what i got:

Hope this helps!

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Write the simplified expression: 2x + 3(x - 2) - 3(x -6)

Bas_tet [7]

Answer:

2x+12

Step-by-step explanation:

2x+3(x−2)−3(x−6)

Distribute:

=2x+(3)(x)+(3)(−2)+(−3)(x)+(−3)(−6)

=2x+3x+−6+−3x+18

Combine Like Terms:

=2x+3x+−6+−3x+18

=(2x+3x+−3x)+(−6+18)

=2x+12

Answer:

=2x+12

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3 years ago

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Help me with this plz

Verizon [17]

Answer:

0.000032, 0.0000064

Step-by-step explanation:

Each is divided by 5

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3 years ago

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The jade restaurant has a large aquarium on display in its lobby.The base of the aquarium is 5 feet by 2 feet and the height is

forsale [732]

40 cubic ft of water are needed to completely fill the aquarium. I did it right this time. ;)

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4 years ago

Suppose the weights of tight ends in a football league are normally distributed such that σ2=400. A sample of 11 tight ends was

AlladinOne [14]

Answer:

$217.636-1.96\frac{20}{\sqrt{11}}=205.817$

$217.636+1.96\frac{20}{\sqrt{11}}=229.455$

So on this case the 95% confidence interval would be given by (205.82;229.46)

Step-by-step explanation:

Assuming the following data: Weight 150 169 170 196 200 218 219 262 269 270 271

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

$\bar X$ represent the sample mean for the sample

$\mu$ population mean (variable of interest)

$\sigma= \sqrt{400}= 20$ represent the population standard deviation

n=11 represent the sample size

Solution to the problem

The confidence interval for the mean is given by the following formula:

$\bar X \pm z_{\alpha/2}\frac{\sigma}{\sqrt{n}}$ (1)

In order to calculate the mean we can use the following formula:

$\bar X= \sum_{i=1}^n \frac{x_i}{n}$ (2)

The mean calculated for this case is $\bar X=217.636$

Since the Confidence is 0.95 or 95%, the value of $\alpha=0.05$ and $\alpha/2 =0.025$ , and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=NORM.INV(0.025,0,1)".And we see that $z_{\alpha/2}=1.96$