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3 years ago

Which number of solution is this Infinite solutions No solution One Solution

Mathematics

1 answer:

goldenfox [79]3 years ago

5 0

Answer:

x=1 y=-3

Step-by-step explanation:

given example: y=6x+3

y=-x-4

6x+3=-x-4

6x+x=-4-3

7x=-7

x=-1

6*(-1)+3=-3

y=-3

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3 years ago

Jessica is a custodian at Oracle Arena. She waxes 20 m² of the floor in = of an hour. Jessica

Wewaii [24]

The complete question is as follows:

Jessica is a custodian at Oracle Arena. She waxes 20 $\mathbf{m^{2}}$ of the floor in $\mathbf{\frac{3}{5}}$ of and hour. At this rate, how many square meters can she wax per hour ?

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Step-by-step explanation:

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4 years ago

An SRS of size 20 is drawn from a population that has a normal distribution. The sample has a mean of 122.5 and a standard devia

Tems11 [23]

Answer:

The value is $\sigma_{\= x} = 1.789$

Step-by-step explanation:

From the question we are told that

The sample size is n = 20

The sample mean is $\= x = 122.5$

The standard deviation is $s = 8$

Generally the standard error of the mean is mathematically represented as

$\sigma_{\= x} = \frac{s}{\sqrt{n} }$

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=> $\sigma_{\= x} = 1.789$

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3 years ago