In the following month 10 percent savings on other cost are expected

Mathematics

1 answer:

charle [14.2K]2 years ago

3 0

Yes agree 10 percent is expected

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What is the 12th partial sum of the summation of negative 2i minus 10, from i equals 1 to infinity?

Ksenya-84 [330]

Ans: 12th partial sum = -276

Given :
$\sum_{i=1}^{12} (-2i-10)$

Find the values for i = 1 to 12:
x (1) = -2 – 10 = -12
x (2) = -4 – 10 = -14
x (3) = -6 – 10 = -16
x (4) = -8 – 10 = -18
x (5) = -10 – 10 = -20
x (6) = -12 – 10 = -22
x (7) = -14 – 10 = -24
x (8) = -16 – 10 = -26
x (9) = -18 – 10 = -28
x (10) = -20 – 10 = -30
x (11) = -22 – 10 = -32
x (12) = -24 - 10 = -34

Add all of them:
12th partial sum = -276

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3 years ago

2. to 1) A 13-foot ladder is leaning against a wall 5 feet from the base of the wall. How far above the ground does the ladder t

Degger [83]

Answer:

12 ft

Step-by-step explanation:

You have a right triangle with the hypotenuse = 13 and one leg = 5

Let x = distance above the ground that the ladder touches the wall

Now use the Pythagorean theorem

$x^{2} + 5^{2} = 13^{2} \\x^{2} + 25 = 169\\x^{2} = 144\\x = \sqrt{144} = 12$

It looks like none of the choices are correct, because the answer is 12 ft.

By the way, it is impossible for the ladder to reach up the wall a distance longer the the length of the ladder. Think about it. OK?

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D is the 4th letter of the alphabet. G the 7th and J the 10th. So which letter comes 13th in the ABC's? 1A 2B 3C 4D 5E 6F 7G 8H 9I 10J 11K 12L <u>13M.</u><u /> This also happens to be the middle of the letters. The numbers are increasing by 3 each time.

The next value is M.

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7th GRADE MATH hellp

Igoryamba

I'm not sure if it is A or B

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X=-2.857142857142857

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