2 years ago

What is the solution to the following system of equations? y=4x-8 y=2x

Mathematics

2 answers:

Alenkinab [10]2 years ago

6 0

Do you still need help?!?!??

ehidna [41]2 years ago

5 0

Answer:

x=4

Step-by-step explanation:

2x=4x-8

2x-4x=-8

-2x=-8

x=4

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7nadin3 [17]

Answer:

The test statistics is $t = -1.7$

The Null and Alternative hypothesis are

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Step-by-step explanation:

From the question we are told that

The population mean is $\mu = 47.2 miles/gallon(MPG)$

The sample size is $n = 250 \ van$

The sample mean is $\= x = 47.0$

The sample standard deviation is $\sigma = 1.9$

The level of significance is $\alpha = 0.02$

Given that the value which the manufacturer gave the automobile is 47.2 and it is believed that this is not correct, then

The Null Hypothesis is

$H_o : \mu = 47.2$

The alternative Hypothesis is

$H_a : \mu \ne 47.2$

The test statistics can be mathematically evaluated as

$t = \frac{\= x- \mu}{\frac{\sigma }{\sqrt{n} } }$

substituting values

$t = \frac{\= 47- 47.2}{\frac{1.9 }{\sqrt{250} } }$

$t = -1.7$

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a snail moves at a speed of 2.394 inches per minute. if the snail keeps moving at this rate about how many inches will it travel

igor_vitrenko [27]

Answer:

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Step-by-step explanation:

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olasank [31]

Y=x+3 (I did this in my head so I'm not sure)

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Step-by-step explanation:

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Helen [10]

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