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2 years ago

Help me and I’ll show u my dump truck

Mathematics

1 answer:

ivolga24 [154]2 years ago

8 0

3rd one I think fhidbzjdh

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Tony is going to watch a movie in his collection. He has 3 action movies, 11 comedies, and 9 dramas. He will randomly select one

Nata [24]

Answer:

12/23

Step-by-step explanation:

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4 0

2 years ago

at a museum, a model of a rocket is 3 feet high. the model has a scale of 1 foot to 121 feet. the museum manager will create a n

notka56 [123]

Answer:

0.79 ft ≈ For 30 feet

Step-by-step explanation:

This is even a tricky question for me, I am pretty sure this would be around 0.79 feet. But I am not too sure so I am very sorry if I am incorrect.

I hope this helps, if it doesn't then just message me and ill be more than happy to help :)

3 0

2 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

Mr. miller has $25 in his savings and wants to put $10 every week into the account. write an equation showing how much money he

iris [78.8K]

The equation you write would be linear, and would be written in slope intercept form y=mx+b. Since Mr. Miller already has $25, we plug that in for "b" in the equation. We plug 10 in for "m", because "x" represents the number of weeks he has been saving. The equation would be y=10x+25. To find how much money Mr. Miller will have in 7 weeks, plug in 7 for x. y=10(7)+25 -> y=70+25 -> y=95 -> $95

7 0

2 years ago

What is 8.89 × 1010 in standard notation?

SSSSS [86.1K]

Answer:

8978.9

Step-by-step explanation:

MULTIPLY THE THE GIVEN AND

8.89 × 1010 = 8978.9

THEN THE RESULT WOUD BE THE STANDARD NOTATION.

8 0

2 years ago