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3 years ago

Which of the following formulas will assist you in calculating the surface area of a cylinder?

Mathematics

1 answer:

bija089 [108]3 years ago

6 0

The actual answer is: SA = 2rh + 2r2

The answer is not SA = 2lw + 2wh + 2lh, the other guy has it incorrect. I put his answer in an assignment and I got it wrong. Trust me, the correct answer is SA = 2rh + 2r2.

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The temperature is-2 degrees Celsius. If the temperature rises by 15 degrees Celsius, what is the new temperature?

attashe74 [19]

Answer:13

Step-by-step explanation:

7 0

3 years ago

Table 1 contains outputs of the function f(x)=b^x for some x values and Tables 2 contains outputs of the function g(x)=logb (x)

REY [17]

What’s your question

6 0

2 years ago

Which is an x-intercept of the continuous function in the table?

Airida [17]

we know that

The x-intercept is the value of the variable x when the value of the function is equal to zero

In the table we have

$(-1, 0)$ is a x-intercept, because

For $x=-1$ the value of the function is equal to zero

$(-6, 0)$ is a x-intercept, because

For $x=-6$ the value of the function is equal to zero

therefore

the answer is

the continuous function in the table has two x-intercepts

$(-1, 0)$

$(-6, 0)$

8 0

3 years ago

Read 2 more answers

At what point does the curve have maximum curvature? Y = 4ex (x, y) = what happens to the curvature as x → ∞? Κ(x) approaches as

MAXImum [283]

Answer-

At $x= \frac{1}{2304e^4-16e^2}$ the curve has maximum curvature.

Solution-

The formula for curvature =

$K(x)=\frac{{y}''}{(1+({y}')^2)^{\frac{3}{2}}}$

Here,

$y=4e^{x}$

Then,

${y}' = 4e^{x} \ and \ {y}''=4e^{x}$

Putting the values,

$K(x)=\frac{{4e^{x}}}{(1+(4e^{x})^2)^{\frac{3}{2}}} = \frac{{4e^{x}}}{(1+16e^{2x})^{\frac{3}{2}}}$

Now, in order to get the max curvature value, we have to calculate the first derivative of this function and then to get where its value is max, we have to equate it to 0.

${k}'(x) = \frac{(1+16e^{2x})^{\frac{3}{2} } (4e^{x})-(4e^{x})(\frac{3}{2}(1+e^{2x})^{\frac{1}{2}})(32e^{2x})}{(1+16e^{2x} )^{2}}$