Solve the formula for h. Surface area of a cylinder: S=2πr2+2πrh

PLEASE help me:( i'm desperate (and dumb): factor 2n^(3)+7n^(2)-2n-7

mario62 [17]

$x {}^{2}(2x + 7) - (2x + 7) \\ (2x + 7)(x {}^{2} - 1) \\ (2x + 7)(x - 1)(x + 1)$

4 0

4 years ago

Read 2 more answers

ANSWER ASAP WILL MARK BRAINLIEST!!!!!

MissTica

Part 1)

Step-by-step explanation:

If you are mentioning about the window view on the graphing calculator, then you must be note that viewing window is the part of the coordinate plane that would be visible on the screen of your graphing calculator.

If you are just viewing only a small portion of entire graph, just think of your calculator screen as a magnifying glass, enabling you to view you a piece of the entire graph.

The size of the coordinate plane is interpreted by Xmin, Xmax, Ymin, and Ymax, as seen at the left.

The zoom setting should be such that you can get the decent range for the x-values and y-values to determine the solution.

The Zoom setting 'Zstandard' is normally 10 x 10 window which is large enough to display the appropriate portion of the graph.

"ZFit" - recalculates Ymin and Ymax using current x-values to show best possible graph. The range gets adjusted so that the function will enter the window at a corner on the left side.

Part 2) Determining the solution of $x\:+\:4y\:=\:26;\:3x\:-\:4y\:=\:30$

Step-by-step explanation:

Considering the system of equations

$\begin{bmatrix}x+4y=26\\ 3x-4y=30\end{bmatrix}$

As

$x+4y=26$

$\mathrm{Subtract\:}4y\mathrm{\:from\:both\:sides}$

$x+4y-4y=26-4y$

$x=26-4y$

$\mathrm{Subsititute\:}x=26-4y$

$\begin{bmatrix}3\left(26-4y\right)-4y=30\end{bmatrix}$

$78-12y-4y=30$

$78-16y-78=30-78$

$-16y=-48$

$y=3$

$\mathrm{For\:}x=26-4y$

$\mathrm{Subsititute\:}y=3$

$x=26-4\cdot \:3$

$x=14$

$\mathrm{The\:solutions\:to\:the\:system\:of\:equations\:are:}$

$y=3,\:x=14$

The graph of the solution of the system of equation is also attached below.

Keywords: system of equations, solution

Learn more about system of equations from brainly.com/question/12526075

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6 0

4 years ago

Can someone Help me with this question ASAP!

JulsSmile [24]

Answer:

A =5

Step-by-step explanation:

From the Pythagorean theorem

3 0

4 years ago

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Do you think Apple will eventually meet their goal of becoming a replacement for a physical wallet? Why or why not?

Simora [160]

Answer:

No

Step-by-step explanation:

This would be more of an opinion and not a fact, but I see it as very unlikely that they will be able to accomplish this goal. Mainly due to human psychology. Most individuals want to be able to physically hold their money as well as being able to physically exchange their money for the goods that they need since physical cash is accepted worldwide. Another main reason is that individual's want to know that their money is theirs and that no bank or corporation can withhold their hard earned cash.

5 0

3 years ago

Solve by completing the square 3x^2-7x-1

docker41 [41]

Answer:

$x=\frac{7+\sqrt{61}}{6},\:x=\frac{7-\sqrt{61}}{6}$

Step-by-step explanation:

$a=3,\:b=-7,\:c=-1:\quad x_{1,\:2}=\frac{-\left(-7\right)\pm \sqrt{\left(-7\right)^2-4\cdot \:3\left(-1\right)}}{2\cdot \:3}$

$x=\frac{7+\sqrt{61}}{6},\:x=\frac{7-\sqrt{61}}{6}$

3 0

3 years ago