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3 years ago

2y = 3(2x + 2) - 7x Identify y-intercept and slope

Mathematics

1 answer:

Anuta_ua [19.1K]3 years ago

4 0

Slope= 10
X intercept: 2

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Need help!ASAP!<br> Prove the following identities:

Semmy [17]

Answer:what kind of math u doing

Step-by-step explanation:

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4 years ago

Read 2 more answers

In the past decades there have been intensive antismoking campaigns sponsored by both federal and private agencies. In one study

astra-53 [7]

Answer:

C. z = 2.05

Step-by-step explanation:

We have to calculate the test statistic for a test for the diference between proportions.

The sample 1 (year 1995), of size n1=4276 has a proportion of p1=0.384.

$p_1=X_1/n_1=1642/4276=0.384$

The sample 2 (year 2010), of size n2=3908 has a proportion of p2=0.3621.

$p_2=X_2/n_2=1415/3908=0.3621$

The difference between proportions is (p1-p2)=0.0219.

$p_d=p_1-p_2=0.384-0.3621=0.0219$

The pooled proportion, needed to calculate the standard error, is:

$p=\dfrac{X_1+X_2}{n_1+n_2}=\dfrac{1642+1415}{4276+3908}=\dfrac{3057}{8184}=0.3735$

The estimated standard error of the difference between means is computed using the formula:

$s_{p1-p2}=\sqrt{\dfrac{p(1-p)}{n_1}+\dfrac{p(1-p)}{n_2}}=\sqrt{\dfrac{0.3735*0.6265}{4276}+\dfrac{0.3735*0.6265}{3908}}\\\\\\s_{p1-p2}=\sqrt{0.00005+0.00006}=\sqrt{0.00011}=0.0107$

Then, we can calculate the z-statistic as:

$z=\dfrac{p_d-(\pi_1-\pi_2)}{s_{p1-p2}}=\dfrac{0.0219-0}{0.0107}=\dfrac{0.0219}{0.0107}=2.05$

z=2.05

4 0

3 years ago

From the 9 male and 8 female sales representatives for an insurance company, a team of 4 men and 3 women will be selected to at

inessss [21]

Select 4 from 9, and 3 from 8. Multiply together.
C(9,4)*C(8,3)
=9!/(4!5!) * 8!/(3!5!)
=7056

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3 years ago

35/9 simplified to it’s simplest form

MariettaO [177]

Answer:

$3\frac{8}{9}$

Step-by-step explanation:

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3 years ago

Simplify your answer as much as possible. 3/x-4/7

Natasha2012 [34]

Answer:

That is ur answer. I was unable to type that so I use took a screenshooton my phone .

Step-by-step explanation:

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3 years ago