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SOVA2 [1]
4 years ago
10

Question 6

Mathematics
1 answer:
Aleks04 [339]4 years ago
7 0

Answer:

B

Step-by-step explanation:

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Two friends are working on losing weight. One
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20 weeks

151-Weigh

Step-by-step explanation:

<u><em>Mark Brainiest Please :) Thanks!</em></u>

8 0
4 years ago
X(4)-20=72 what is the missing number
Elis [28]

Answer:

23

Step-by-step explanation:

(4 x 23) -20 = 72

5 0
4 years ago
A random sample of 6 homes in Gainesville, Florida between 1800 and 2200 square feet had a mean of 212990 and a standard deviati
Andrej [43]

Answer:

The 95% confidence interval for the average price of a home in Gainesville of this size is between 183,772.5 square feet and 242,207.5 square feet.

Step-by-step explanation:

We have the standard deviation of the sample, so we use the students t-distribution.

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 6 - 1 = 5

Now, we have to find a value of T, which is found looking at the t table, with 5 degrees of freedom(y-axis) and a confidence level of 0.95(t_{95}). So we have T = 2.015

The margin of error is:

M = T*s = 2.015*14500 = 29217.5.

In which s is the standard deviation of the sample.

The lower end of the interval is the sample mean subtracted by M. So it is 212990 - 29217.5 = 183,772.5 square feet

The upper end of the interval is the sample mean added to M. So it is 212990 + 29217.5 = 242,207.5 square feet

The 95% confidence interval for the average price of a home in Gainesville of this size is between 183,772.5 square feet and 242,207.5 square feet.

3 0
3 years ago
How to solve x^2-7=-x^2+1
andreev551 [17]

Answer:

Step-by-step explanation:

x^2 and -x^2 would cancel

and then it would be -7 = 1

it would be no solution

but I don't know, someone can prove me wrong I may have a lapse in my algebra at the moment

3 0
3 years ago
Brayden, Howard, and Vincent are on the football team. During a game, Brayden gains 1 less than 5 times the average number of ya
Gnoma [55]

Answer:  If two pair is parallel then it has no solution.

Step-by-step explanation:

Since we have given that

Let the number of gained yards by each player be y

For the case of Brayden:

Equation will be

y=5x-1\\\\y-5x=-1

For the case of Howard :

Equation will be

y=5x+1\\\\y-5x=1

For the case of Vincent :

y=4x+5\\\\y-4x=5

Since First two equations are parallel so it has no solution.

Reason:

y-5x=1\\\\y-5x=-1\\\\\frac{a_1}{a_2}=\frac{b_1}{b_2}=\frac{c_1}{c_2}\\\\\frac{1}{1}=\frac{5}{5}\neq \frac{1}{-1}

Hence, if two pair is parallel then it has no solution.


8 0
4 years ago
Read 2 more answers
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