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3 years ago

6 (n-3) - 2n = 10 Pleasee help

Mathematics

1 answer:

professor190 [17]3 years ago

3 0

Answer: n = 7

(this website may help: https://www.symbolab.com/)

Step-by-step explanation:

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In quadrilateral ABDC, AB ∥ CD. Which additional piece of information is needed to determine that ABDC is a parallelogram? AB ≅

torisob [31]

Answer:

Step-by-step explanation:

For any quadrilateral to be a parallelogram

i) either both the pairs of opposite sides must be equal

ii) Both the pairs of opposite sides must be parallel

iii) Opposite pairs of angles must be equal

iv) Diagonals must bisect each other.

v) A pair of opposite sides must be parallel and equal

Here we are already given that AB || CD

So either we should be given that AD || BC

or we must be given that AB = CD

Here it is given AB = CD as an option.

So Option A) or the first option is the right answer that AB ≅CD is needed to prove ABCD is a parallelogram.

6 0

2 years ago

Use the Ratio Test to determine whether the series is convergent or divergent. [infinity] n! 112n n = 1 Identify an. Correct: Yo

MakcuM [25]

Answer:

Step-by-step explanation:

Recall that the ratio test is stated as follows:

Given a series of the form $\sum_{n=1}^{\infty} a_n let L=\lim_{n\to \infty}\left|\frac{a_{n+1}}{a_n}\right|$

If L<1, then the series converge absolutely, if L>1, then the series diverge. If L fails to exist or L=1, then the test is inconclusive.

Consider the given series $\sum_{n=1}^{\infty} n! \cdot 112n$ . In this case, $a_n =n! \cdot 112n$ , so , consider the limit

$\lim_{n\to\infty} \frac{(n+1)! 112 (n+1)}{n! 112 n} = \lim_{n\to\infty}\frac{(n+1)^2}{n}$

Since the numerator has a greater exponent than the numerator, the limit is infinity, which is greater than one, hence, the series diverge by the ratio test

7 0

3 years ago

Select all of the following that are equivalent to 1/8

kykrilka [37]

Answer:

4/8: 1/2 or/and 50%

2/8: 1/4 or/and 25%

6/8: 3/4 or/and 75%

Hope this helps!

6 0

2 years ago

15% of 95? and 3 1/2% of 100?

NISA [10]

Answer:

15% of 95-14.25

3 1/2% of 100-3.5

Step-by-step explanation:

3 0

2 years ago

Read 2 more answers

If 1/a, 1/b, 1/c are in Arithmetic Progress, show that 2ac/a+c.

Iteru [2.4K]

1/b-1/a = 1/c-1/b [ since they are in arithmetic progress]
1/b+1/b = 1/c+1/a
2/b = (a+c)/ac
2ac = b(a+c)
2ac/(a+c) =b

6 0

3 years ago