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2 years ago

1.2n+12!/n-1! 2. 4n+3!/2n+1!

1 answer:

3 0

Are you sure there is no bracket in the denominators (n-1)! if not then the answer is:

1) 2n + 12!/2n -1 ===> 2n + (479,001,600)/n -1 or (2n²-n+12!)/n
2) 4n+3!/2n +1! ====>4n +3/n +1

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4x + 6 - x = 7 + 2 x

rodikova [14]

Answer:

x = 1

Step-by-step explanation:

4x + 6 - x = 7 + 2x

3x + 6 = 7 + 2x

3x - 2x = 7 - 6

x = 1

8 0

2 years ago

Read 2 more answers

The diagram shows a 3 cm x 5 cm x 4 cm cuboid

Rainbow [258]

Answer:

a) The length of segment AC is approximately 5.83 centimeters.

b) The angle ACD is approximately 34.5º.

Step-by-step explanation:

a) Since $AB \perp BC$ , the length of segment $AC$ is determined by Pythagorean Theorem, that is:

$AC = \sqrt{(5\,cm)^{2}+(3\,cm)^{2}}$

$AC \approx 5.831\,cm$

The length of segment AC is approximately 5.831 centimeters.

b) Since $AB \perp BC \perp AD$ , the length of segment $AD$ is determined by this Pythagorean identity:

$AD = \sqrt{(3\,cm)^{2}+(5\,cm)^{2}+(4\,cm)^{2}}$

$AD \approx 7.071\,cm$

The angle ACD is determined by the following trigonometric expression:

$\cos C = \frac{AC}{CD}$

$\cos C = \frac{5.831\,cm}{7.071\,cm}$

$\cos C = 0.825$

$C = \cos^{-1} 0.825$

$C \approx 34.448^{\circ}$

The angle ACD is approximately 34.448º.

4 0

2 years ago

Im stuck on these 2 questions

Kryger [21]

Answer:

In the first question it is the 2nd table. On the second it is : No, the xost of the 9 shirts is incorrect

8 0

2 years ago

Read 2 more answers

Can someone help me learn linear equations

Bezzdna [24]

Answer:

Linear equations that go in a straight line.

They are linear so they don’t curve like parabolas.

Step-by-step explanation:

See this picture. It will definitely help you!

6 0

3 years ago

A high school student has started a new job. He plans to save $1 the first week, $2 the second week, $4 the third week, and $8 t

Mama L [17]

If you already know that you have . . .

1$ after week 1
2$ after week 2
4$ after week 3
8$ after week 4

. . . You can then tell that every week the money you save doubles (times 2)

So to continue . . . .
16$ after week 5
32$ after week 6
64$ after week 7
128$ after week 8
256$ after week 9
512$ after week 10

You will then know that after ten weeks u will have 512$ which is answer choice D.

Hope this helps! :)

3 0

2 years ago

Read 2 more answers