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Len [333]
3 years ago
10

Can you guys help me with number 6 and 7??????

Mathematics
1 answer:
Sergio039 [100]3 years ago
5 0
The formula to find area would be length times height times width. In number six, the prism is 12 cm in length, 9 cm wide, and 5 cm high. So your equation would be 12 x 5 x 9. Your answer would be 540 cm squared.

Don't know about number seven, though
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Answer:

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Step-by-step explanation:

For part a,

We first plot the data using a graphing calculator.  We then run a linear regression on the data.

In the form y = ax + b, we get an a value that rounds to 0.74 and a b value that rounds to 18.99.  This gives us the equation

y = 0.74x + 18.99.

For part b,

To find the final average of a student who made an 83 on the first test, we substitute 83 in place of x in our regression equation:

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y = 61.42 + 18.99 = 80.41

Rounded to the nearest percent, this is 80.

For part c,

The value of r is 0.92.  This tells us that the line is a 92% fit for the data.

The value of r² is 0.85.  This is the coefficient of determination; it tells us how much of the dependent variable can be predicted from the independent variable.

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3 years ago
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That looks like Choice (d).
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Hope this helps! ;)

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Answer:

Prove whether the following are identities 2tanh 1/2x / 1−tanh^2 1/2 x = sinh x

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