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AlekseyPX
3 years ago
13

Solve the equation. Then check your solution.

Mathematics
1 answer:
Gnom [1K]3 years ago
6 0

Answer:

b) 6

Step-by-step explanation:

x - 4 = 2

x = 2 + 4

x = 6

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PLEASE HELP!! WILL GIVE 50 points PLUS BRAINLEST!!!
SCORPION-xisa [38]

Answer:

Y=2.2x+2.50

Step-by-step explanation:

The y-intercept in this situation is the 2.50 pick up fee.

7 0
3 years ago
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Today a tank contains 6,000 gallons of water. For the past 5 days, 200 gallons of water was pumped out of the tank each day. Wha
DaniilM [7]
1,000 gallons was pumped out after 5 days and the rational number is 1/6 to represent the volume
8 0
3 years ago
Your teacher will report the mean and standard deviation of the sampling distribution created by the class.
sukhopar [10]

Answer:

\hat p = \frac{\sum_{i=1}^{40} \hat p_i}{40}

\hat p = 0.493

And the deviation is given by this formula:

s_{\hat p}= \frac{\sum_{i=1}^{40} (\hat p_i - \hat p)^2}{n-1}= 0.085

And as we can see the population proportion expected for the number of heads 0.5  is very close to the mean of the sampling distribution, the error is :

\% Error = \frac{0.5-0.493}{0.5}* 100 = 1.4\%

Step-by-step explanation:

Assuming the data on the figure attached. We ar assuming that this is a sampling distribution of sample proportions of heads in 40 flips of a coin.

As we can see we have the following values:

0.25, 0.35, 0.375,0.375, 0.40,0.40,0.40, 0.425,0.425,0.425, 0.45,0.45,0.45,0.45, 0.475,0.475,0.475, 0.475,0.475, 0.50,0.50,0.50, 0.525,0.525,0.525,0.525, 0.55,0.55,0.55,0.55,0.55, 0.575,0.575,0.575 0.575, 0.575, 0.60,0.60, 0.65,0.65

And we can calculate the sample proportion with the following formula:

\hat p = \frac{\sum_{i=1}^{40} \hat p_i}{40}

\hat p = 0.493

And the deviation is given by this formula:

s_{\hat p}= \frac{\sum_{i=1}^{40} (\hat p_i - \hat p)^2}{n-1}= 0.085

And as we can see the population proportion expected for the number of heads 0.5  is very close to the mean of the sampling distribution, the error is :

\% Error = \frac{0.5-0.493}{0.5}* 100 = 1.4\%

4 0
3 years ago
-c - 8(4c - 5) - (-18c + 3) <br><br> -15c+37<br> -c+40<br> -32c-3<br> 18c+40
mina [271]

Answer:

i think it is -c+40

Step-by-step explanation:

i hope that this helps

6 0
4 years ago
If two lines are parallel the lines must they lie on the same plane
ale4655 [162]
Yes, because if you would draw 2 parallel lines in 3D space, a plane would exist between those two lines.
Hope this helps :)
5 0
3 years ago
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