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3 years ago

PLEASE HELP ITS A TIMED TEST!!!

Mathematics

1 answer:

nexus9112 [7]3 years ago

8 0

Answer:

First you need to set up an equation y = mx + b. m would be the monthly charge and b would be the one time fee. x represents the number of months.

To solve for the number of months with a total price of 240 we substitute 240 in for y and solve for x.

240 = 25x + 40

subtract 40 from each side

200= 25x

divide by 25

8 = x

8 months

10 + 7r = 45

7r = 35

r = 5

5 milesStep-by-step explanation:

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Make x the subject of the formulae <br> 5 ( c − b x ) = 10

Basile [38]

Answer:

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Step-by-step explanation:

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2 years ago

Find the solution set of the inequality <br><br> 8x - 8 ≤ -72

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butalik [34]

Answer:

It's True!

Step-by-step explanation:

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3 years ago

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Question

AlekseyPX

Answer:

The population mean is 5 volts

Step-by-step explanation:

Output voltage is assumed to be normally distributed, with standard deviation 0.25 Volts

s=0.25

n = 8

$H_0:\mu = 5\\H_a:\mu \neq 5$

Sample mean = $\bar{x}=4.85$

Since n < 30 and population standard deviation is unknown

So, we will use t test

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Refer the t table for p value

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So, $t_{(df,\alpha)}=t_{7,0.05}=2.365$

P value >α

So, We are failed to reject null hypothesis

Hence The population mean is 5 volts

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4 years ago

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