Find the sum of the arithmetic series 11+20+29+...+407

Mathematics

1 answer:

Assoli18 [71]3 years ago

4 0

The Answer is 467
Hops this helps

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Guys, please please help me

agasfer [191]

Answer:

508.68

Step-by-step explanation:

Upper and lower surfaces of the cylinder:

$\pi r^{2} =9\pi \\S=2*9\pi =18\pi$

Side area of the cylinder:

$S=sh=\pi dh=6\pi *3*8=144\pi$

The total area:

$S=114\pi +18\pi =162\pi =162*3.14=508.68$

5 0

3 years ago

The area of a rectangle with width x and length 6x and 6x^2. What does the coefficient 6 mean in terms of the problem?

sveta [45]

Answer:

The coefficient 6 in 6x means 6(x) or 6 multiplied by x 6 times.

Step-by-step explanation:

X could be anything, it is only holding the place of a number. The coefficient 6 before the x is a number being multiplied by the unknown variable, x. For example if x = 2 the expression would turn into 6(2) which equals 12.

Hope this helps! If you have any other questions please don't hesitate to ask me or your teacher so you can be sure to master the subject. :)

6 0

3 years ago

When the function below is graphed, how many x-intercepts does it have?y = 4x2 - 12x + 9?

Sladkaya [172]

Only x-intercept because if you want to know about x-intercepts so y will be zero (y=0)
then 0 =4x^2 -12x + 9
0=(2x-3)(2x-3)
0=2x-3
so x=3/2 that is x-intercept

7 0

3 years ago

Read 2 more answers

A baby bird jumps from a tree branch and flutters to the ground. The function "f" models the bird's height (in meters) above the

AURORKA [14]

The answer to this question will depend on the function f itself. Basically you will find the height in meters above the ground of the bird when it jumped when the time t=0s. This is substsitute every t in the function for a value of zero and that way you will get the bird's height at the time it jumped. If you were given a graph for this function, you can find the y-intercept of the graph and that will be the answer as well. The question could be written like this:

A baby bird jumps from a tree branch and flutters to the ground. The function " $f(t)-4.9t^{2}+25$ " models the bird's height (in meters) above the ground as a function of time (in seconds) after jumping. What is bird's height above the ground when it jumped.