I need help plssssss plsss here seggy picture too

Mathematics

2 answers:

Mrac [35]3 years ago

6 0

is it froom fairy tale

Step-by-step explanation:

k your welcome

Novay_Z [31]3 years ago

3 0

Answer:

So seggzsey

Step-by-step explanation:

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Can someone help me with this?

Wewaii [24]

3x+4=y+5, then y+5=3x+4
It is called: reflexive property

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x = y and y = 10, then x = 10
It is called: equality substitution property

7 0

3 years ago

The hiski s family spends $600 per month on groceries for the family. If this is 15% of their monthly budget , then what is thei

ad-work [718]

I think that it is $4,000

8 0

4 years ago

REAL ANSWERS PLEASE AND NOT JUST FOR THE POINTS 20 EACH

Fed [463]

A+b=(-3n+2)+(5n-7)

=(5-3n)+(2-7)

=2n-5

Came up with the same answer as the first guy

4 0

3 years ago

The following data gives the speeds (in mph), as measured by radar, of 10 cars traveling north on I-15. 76 72 80 68 76 74 71 78

____ [38]

Answer:

71.123 mph ≤ μ ≤ 77.277 mph

Step-by-step explanation:

Taking into account that the speed of all cars traveling on this highway have a normal distribution and we can only know the mean and the standard deviation of the sample, the confidence interval for the mean is calculated as:

$m-t_{a/2,n-1}\frac{s}{\sqrt{n} }$ ≤ μ ≤ $m+t_{a/2,n-1}\frac{s}{\sqrt{n} }$

Where m is the mean of the sample, s is the standard deviation of the sample, n is the size of the sample, μ is the mean speed of all cars, and $t_{a/2,n-1}$ is the number for t-student distribution where a/2 is the amount of area in one tail and n-1 are the degrees of freedom.

the mean and the standard deviation of the sample are equal to 74.2 and 5.3083 respectively, the size of the sample is 10, the distribution t- student has 9 degrees of freedom and the value of a is 10%.

So, if we replace m by 74.2, s by 5.3083, n by 10 and $t_{0.05,9}$ by 1.8331, we get that the 90% confidence interval for the mean speed is: