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Stolb23 [73]
2 years ago
14

What is the side length, x, of this cube? ____ miles Please help, I will mark brainlist.

Mathematics
1 answer:
Arte-miy333 [17]2 years ago
8 0
X=30
explanation:
if we are given that the volume is 27,000, we know that x^3 should equal 27,000
so take the cube root of 27,000 and that is 30
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Find c such that (−3,−8), (−7,−6), and (c,4) lie on a line.
Nutka1998 [239]
If the 3 points are collinear, then the slopes of all line segments connecting the points are the same.

Thus, 

         -6 - (-8)         2
m = ------------- = -------- = -1/2
         -7 - (-3)         -4

Then the following must be true:

             4-(-6)          10
-1/2 = ------------ = ---------
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Cross multiplying, -(c+7) = 20, and c+7 = -20, so that c = -27
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3 years ago
A national survey interviewed 3800 people ages 18 and older nationwide by telephone. One question asked was the amount of gasoli
NeTakaya

Answer:

For this case a parameter represent the population data and for this case the parameter would be the true mean \mu who represent the amount of gasoline they used in the previous week

\bar X= \frac{\sum_{i=1}^n X_i}{3800} =11.75

And the sample mean is an unbiased estimator of the true mean.

Step-by-step explanation:

For this case a parameter represent the population data and for this case the parameter would be the true mean \mu who represent the amount of gasoline they used in the previous week

And in order to estimate the parameter of interest we use a survey of n =3800 and the sample mean who represent an statistic is given by:

\bar X = \frac{\sum_{i=1}^n X_i}{n}

And we got:

\bar X= \frac{\sum_{i=1}^n X_i}{3800} =11.75

And the sample mean is an unbiased estimator of the true mean.

4 0
3 years ago
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Bezzdna [24]

Answer: 32 and 42

Step-by-step explanation:

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j = 6

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20 + 12 = 32

5(6) + 12

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6 0
2 years ago
Read 2 more answers
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lana [24]
\frac{1}{3}^2\\\frac{1}{3}*\frac{1}{3}\\\frac{1}{9}

1 / 9
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3 years ago
CALLING ALL BRAINLY USER HELP ME AND I'LL MARK U (BRAINLLEST)!!!
Natalka [10]

Answer:

it would be b for 1 since 7 would be negative and the 3 would be positive

7 0
2 years ago
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