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4 years ago

Hey I'm kinda stuck on this one, can I get some help?

Mathematics

1 answer:

Mademuasel [1]4 years ago

5 0

Because the new function is y = 8x, we know each box costs $8.

The original brand costs $12 per box, so the new brand is $4 cheaper.

To find out how much we'd save if we bought 4 boxes, we can replace the value of x with 4 in each equation.

y = 12x

y = 12(4)

y = 48

y = 8x

y = 8(4)

y = 32

On buying 4 boxes, we'd save $16 with the new brand.

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PLEASEEEE HELP!!!!! I will mark you as brainiest for correct answer!!!

pshichka [43]

<2 = 45 degrees They are corresponding angles

74 + <1 + <2 = 180 it makes a straight line

74 +<1 +45 = 180

119 +<1 =180

subtract 119

<1 = 180 -119

<1 = 61 degrees

5 0

3 years ago

A restaurant decides to test their oven's thermostat to see if it is working properly, that is, if the actual temperature inside

Taya2010 [7]

Answer:

For this case we have information from a sample of n =20 times of temperatures of the oven

The parameter of interest is $\mu$ population temperature mean of the oven

And the statistic is calculated with this formula:

$\bar X = \frac{\sum_{i=1}^n X_i}{n}$

With n = 20 and represent the mean temperature of the oven

The correct option for this case is:

mu = the true mean temperature of the oven xbar = the true mean temperature of the oven

Step-by-step explanation:

Previous concepts

Parameter represent a property of a population and is calculated with the information of all the populatio. Some examples are the population mean and deviation $\mu,\sigma$

Statistic represent a propoerty of a sample and are used used in order to describe the population parameters, since represent estimators of the real parameters.

Solution to the problem