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3 years ago

Plot the graph y=3x from x=-1 from x=2

Mathematics

1 answer:

Ira Lisetskai [31]3 years ago

6 0

Answer:

(-1,-3) and (2,6)

Step-by-step explanation:

Plug x (x value) into equation (outputs y value)

(x value, y value) which gives coordinates

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1/2e=1/4 what does equation equal

expeople1 [14]

$\sf \frac{1}{2e}= \frac{1}{4} \\ \\ 2e=4 \\ \\ \boxed{\sf e=2}$

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3 years ago

On Saturday Keisha ran 2.135 kilometers. On Sunday she ran 1.87 kilometers.

otez555 [7]

Answer:

0.808 kilometers

Step-by-step explanation:

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3 years ago

*Geometry* Find the value of x and y

grandymaker [24]

Answer:

I say D, most accurate angles

Step-by-step explanation:

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4 years ago

In a random sample of 10 residents of the state of Washington, the mean waste recycled per person per day was 2.3 pounds with a

djverab [1.8K]

Answer:

90% confidence interval for the mean waste recycled per person per day for the population of Washington is [2.074 , 2.526].

Step-by-step explanation:

We are given that a a random sample of 10 residents of the state of Washington, the mean waste recycled per person per day was 2.3 pounds with a standard deviation of 0.39 pounds.

Firstly, the pivotal quantity for 90% confidence interval for the mean waste recycled per person per day for the population of Washington is given by;

P.Q. = $\frac{\bar X - \mu}{\frac{s}{\sqrt{n} } }$ ~ $t_n_-_1$

where, $\bar X$ = sample mean waste recycled per person per day = 2.3 pounds

s = sample standard deviation = 0.39 pounds

n = sample of residents = 10

$\mu$ = population mean waste recycled per person per day

Here for constructing 90% confidence interval we have used t statistics because we don't know about population standard deviation.

So, 90% confidence interval for the population mean, $\mu$ is ;

P(-1.833 < $t_9$ < 1.833) = 0.90 {As the critical value of t at 9 degree of

freedom are -1.833 & 1.833 with P = 5%}

P(-1.833 < $\frac{\bar X - \mu}{\frac{s}{\sqrt{n} } }$ < 1.833) = 0.90

P( $-1.833 \times {\frac{s}{\sqrt{n} } }$ < ${\bar X - \mu}$ < $1.833 \times {\frac{s}{\sqrt{n} } }$ ) = 0.90

P( $\bar X-1.833 \times {\frac{s}{\sqrt{n} } }$ < $\mu$ < $\bar X+1.833 \times {\frac{s}{\sqrt{n} } }$ ) = 0.90

90% confidence interval for $\mu$ = [ $\bar X-1.833 \times {\frac{s}{\sqrt{n} } }$ , $\bar X+1.833 \times {\frac{s}{\sqrt{n} } }$ ]

= [ $2.3-1.833 \times {\frac{0.39}{\sqrt{10} } }$ , $2.3-1.833 \times {\frac{0.39}{\sqrt{10} } }$ ]

= [2.074 , 2.526]

Therefore, 90% confidence interval for the mean waste recycled per person per day for the population of Washington is [2.074 , 2.526].

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3 years ago

Identify the domain and range of the relationship (-9,2)(-4,2)(3,2)(9,2)

finlep [7]

Domain: -9,-4, 3, 9
range: 2

6 0

3 years ago