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3 years ago

5

Please answer : B tysm

2 answers:

yanalaym [24]3 years ago

7 0

Answer:

-2

Step-by-step explanation:

(7 - 0)/(0 - 3.5) = -2

slamgirl [31]3 years ago

3 0

Answer: -2

Step-by-step explanation: Remember rise over run. Two points you are given from the graph are (0,7) and (1, 5).

$\frac{7-5}{0-1} = \frac{2}{-1} = -2$

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Share the things you notice

iogann1982 [59]

Answer:

its a negative correlation and a traingle the a nd c are farther apart then the m and n

Step-by-step explanation:

3 0

3 years ago

Find the indicated probability.

natka813 [3]

Answer:

C) 0.179

Step-by-step explanation:

Since the trials are independent, this is a binomial distribution:

<u>Recall:</u>

Binomial Distribution --> $P(k)={n\choose k}p^kq^{n-k}$
$P(k)$ denotes the probability of $k$ successes in $n$ independent trials
$p^k$ denotes the probability of success on each of $k$ trials
$q^{n-k}$ denotes the probability of failure on the remaining $n-k$ trials
${n\choose k}=\frac{n!}{(n-k)!k!}$ denotes all possible ways to choose $k$ things out of $n$ things

<u>Given:</u>

$n=10$
$k=4$
$p^k=0.53^4$
$q^{n-k}=(1-0.53)^{10-4}=0.47^6$
${n\choose k}={10\choose 4}=\frac{10!}{(10-4)!4!}=210$

<u>Calculate:</u>

$P(4)=(210)(0.53^4)(0.47^6)=0.1786117069\approx0.179$

Therefore, the probability that the archer will get exactly 4 bull's-eyes with 10 arrows in any order is 0.179

7 0

2 years ago

Gribbles are small, pale white, marine worms that bore through wood. While sometimes considered a pest since they can wreck wood

Stells [14]

<u>Answer with explanation:</u>

As per given , we have

A sample of 50 gribbles finds an average length of 3.1 mm with a standard deviation of 0.72.

i.e. n= 50

Degree of freedom = n-1=49

$\overline{x}=3.1\ mm$

$s=0.72\ mm$

The point estimate of the population mean is equals to the sample mean.

i.e. The best estimate for the length of gribbles= 3.1 mm

Also, population standard deviation is unknown , then the confidence interval would be :

$E=t_{\alpha/2, df}\dfrac{s}{\sqrt{n}}$

For df= 49 and significance level of 0.05 , the t- value (using t-distribution table) would be :

$t_{0.05/2, 49}=t_{0.025, 49}= 2.010$

Now, Margin of error : $E=(2.010)\dfrac{0.72}{\sqrt{50}}$

$=0.204664986747\approx0.20$

95% confidence interval : $(\overline{x}-E,\ \overline{x}+E)$

$i.e.\ (3.1-0.20, 3.1+0.20)=(2.90,\ 3.30)$

3 0

4 years ago

3/7x+5=8<br><br> 1) 7 2/3<br> 2) 7<br> 3) -7

Aleks04 [339]

3/7 x+5=8
3/7 x=3
3x=21
x=7

The answer is (2)

5 0

3 years ago

11 cups make how many half cups?

Phantasy [73]

1 cup = 2 half cups

multiply 2 half cups with 11

11 x 2 = 22

22 half-cups is your answer

hope this helps

5 0

3 years ago

Read 2 more answers