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Aliun [14]
3 years ago
7

i love how this website was created for people to get help with work and ask questions about it but instead people ask stupid qu

estions or the question directly from their work. (haha just like this one)
Mathematics
2 answers:
Luden [163]3 years ago
8 0

Answer:

mk,  eee

Step-by-step explanation:

Natali [406]3 years ago
6 0

UHHHH...... I THINK IT UHHH CARROT.... YUH YUH I THINK ITS A CARROT

You might be interested in
The magnitude and direction of two vectors are shown in the diagram. What is the magnitude of their sum?
Serjik [45]

Answer:

2√5

Step-by-step explanation:

Using the formula for calculating resultant

R = √Fx + Fy

\sum Fx = -2sin 45 + 4 cos 45

\sum Fx =  2cos45

\sum Fx = 2(1/√2)

\sum Fx   = 2/√2

Similarly;

\sum Fy = 2 cos 45 + 4 sin45

\sum Fx  = 2(1/√2) + 4(1/√2)

\sum Fx = 6/√2

Magnitude = √(2/√2)²+6/√2)²

Magnitude = √4/2 + 36/2

Magnitude = √2+18

Magnitude = √20

Magnitude = 2√5

Hence the magnitude of their sum is 2√5

6 0
3 years ago
Read 2 more answers
Solve 8m-2(14-m)>7(m-4)+3m
emmasim [6.3K]

Answer:

0>0 or error

Step-by-step explanation:

8m-2(14-m)>7(m-4)+3m

8m-28+2m>7m-28+3m

10m-28>10m-28

0>0

5 0
2 years ago
Out of 300 students surveyed 17 have a dog predict how many of the 300 in school have a dog
Over [174]

Answer:

17/300.

Step-by-step explanation:

17/300 students have a dog.

8 0
3 years ago
Read 2 more answers
Joe goes running in the park. He runs 3 miles and does it in 42 minutes. How many minutes doe it take him to run a mile?​
Simora [160]
14 minutes per mile since 42/3 is 14
6 0
2 years ago
Read 2 more answers
In a college student poll, it is of interest to estimate the proportion p of students in favor of changing from a quarter-system
Contact [7]

Answer:

n=206

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".  

The margin of error is the range of values below and above the sample statistic in a confidence interval.  

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".  

The population proportion have the following distribution

p \sim N(p,\sqrt{\frac{\hat p(1-\hat p)}{n}})

Solution to the problem

In order to find the critical value we need to take in count that we are finding the interval for a proportion, so on this case we need to use the z distribution. Since our interval is at 99% of confidence, our significance level would be given by \alpha=1-0.99=0.01 and \alpha/2 =0.005. And the critical value would be given by:

t_{\alpha/2}=-2.58, t_{1-\alpha/2}=2.58

The margin of error for the proportion interval is given by this formula:  

ME=z_{\alpha/2}\sqrt{\frac{\hat p (1-\hat p)}{n}}    (a)  

And on this case we have that ME =\pm 0.09, we can use as prior estimate of p 0.5, since we don't have any other info provided, and we are interested in order to find the value of n, if we solve n from equation (a) we got:  

n=\frac{\hat p (1-\hat p)}{(\frac{ME}{z})^2}   (b)  

And replacing into equation (b) the values from part a we got:

n=\frac{0.5(1-0.5)}{(\frac{0.09}{2.58})^2}=205.44  

And rounded up we have that n=206

3 0
3 years ago
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