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vovikov84 [41]
2 years ago
11

Can you help with this question? I am kinda stuck.

Mathematics
1 answer:
ruslelena [56]2 years ago
4 0

Answer:

  • 29400 cm²

Step-by-step explanation:

The cube has 6 equal faces.

<u>Total surface area:</u>

  • S = 6a²
  • S = 6*(0.7 m)² = 6*(70 cm) ² = 29400 cm²
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Complete the following: (2x +3y)^2 = (2x)^2+2(2x)(3y) +(____)^2
FrozenT [24]

Answer:

Complete function will be  (2x+3y)^2=(2x)^2+(3y)^2+2\times (2x)\times (3y)

Step-by-step explanation:

We have given equation (2x+3y)^2=(2x)^2+2\times (2x)\times (3y)+..........^2

We have to find the function in place of blank space and complete the function

We know the algebraic equation (a+b)^2=a^2+b^2+2ab

So (2x+3y)^2=(2x)^2+(3y)^2+2\times (2x)\times (3y)

So in place of blank pace there will be (3y)^2

And complete function will be  (2x+3y)^2=(2x)^2+(3y)^2+2\times (2x)\times (3y)

3 0
3 years ago
The number of ice cubes in a drink and the temperature of the drink, what kind of association is that
ira [324]

Answer:

An unary association

Step-by-step explanation:

5 0
3 years ago
An educational psychologist wishes to know the mean number of words a third grader can read per minute. She wants to make an est
antiseptic1488 [7]

Answer:

The 95% confidence interval for the mean number of words a third grader can read per minute is (23.8, 24.4).

Step-by-step explanation:

We have to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1 - 0.95}{2} = 0.025

Now, we have to find z in the Z-table as such z has a p-value of 1 - \alpha.

That is z with a p-value of 1 - 0.025 = 0.975, so Z = 1.96.

Now, find the margin of error M as such

M = z\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

M = 1.96\frac{3.7}{\sqrt{582}} = 0.3

The lower end of the interval is the sample mean subtracted by M. So it is 24.1 - 0.3 = 23.8

The upper end of the interval is the sample mean added to M. So it is 24.1 + 0.3 = 24.4.

The 95% confidence interval for the mean number of words a third grader can read per minute is (23.8, 24.4).

5 0
3 years ago
Which style was preferred as the state competition piece and by what percentage?
otez555 [7]

Answer:

Gothic around 53.8

Step-by-step explanation:

divide 232 by 100 and add 62 and 63 and you get 125 and you divide 2.32 which is 232 divided by 100 and you get 53.8. So 125 / 2.32 is 53.8.

7 0
3 years ago
Please help! I will gift you brainiest in reward.
shepuryov [24]

Answer:

<h2>Graph D</h2>

Step-by-step explanation:

When the process starts, the water is flowing slowly, since there is only 1 valve open. That represents the part on this where the line is going almost horizontally.

When the operator opens the second valve also, then there will be more water released at once, which means that the water will come out faster, and take less time. That represents the middle part of the line, which is almost vertical.

When the operator shut's down the second valve, then the process gets slower, and that represents the part which is going slow again. And that represents the 3rd part, where the line is going almost horizontal again.

Mark me brainliest if this could help! Thanks!

4 0
2 years ago
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