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3 years ago

What is the average of the integers from 25-41

2 answers:

7 0

The average of 25 and 41 is (1/2)(25+41) = (1/2)(66) = 33 .

Similarly ...
--The average of 26 and 40 is 33.
-- The average of 27 and 39 is 33.
-- The average of 28 and 38 is 33.
-- The average of 29 and 37 is 33.
-- The average of 30 and 36 is 33.
-- The average of 31 and 35 is 33.
-- The average of 32 and 34 is 33.
-- That leaves only 33.

So the average of all of those 17 integers is 33 .

Mashcka [7]3 years ago

4 0

The answer is 33 for your question

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If the sum of the first 12 terms of a geometric series is 8190 and the common ratio is 2. Find the first term and the 20th term.

Reil [10]

The first term is 2 and the 20th term is 1048576 .

<u>Step-by-step explanation:</u>

Here we have , If the sum of the first 12 terms of a geometric series is 8190 and the common ratio is 2. We need to Find the first term and the 20th term. Let's find out:

We know that Sum of a GP is :

⇒ $S_n = \frac{a(r^n-1)}{r-1}$

So ,Sum of first 12 terms is :

⇒ $S_1_2 = \frac{a(2^{12}-1)}{2-1}$

⇒ $8190=a(2^{12}-1)$

⇒ $\frac{8190}{4095}=a$

⇒ $a=2$

Now , nth term of a GP is

⇒ $a_n = ar^{n-1}$

So , 20th term is :

⇒ $a_2_0 = 2(2)^{20-1}$

⇒ $a_2_0 = (2)^{20}$

⇒ $a_2_0 = 1048576$

Therefore , the first term is 2 and the 20th term is 1048576 .

8 0

4 years ago

I need help finding x

Nastasia [14]

All sides of a triangle add up to 180 degrees. Since we know one angle is 93 degrees, we know that the top part is going to equal 180 degrees. We know that two of those measurements are 93 and 45, so we add those together to get 138. We subtract this from 180 to find the missing angle, which is 42 degrees. So, the left side of the triangle is equivalent to 45 degrees and the right side (x) is 42 degrees. 93 + 45 + 42 = 180. If it was asking for the measurements of the supplementary angles to the bottom angles of the triangle, then those would be (for 45) 135 and (for 42) 138, that way both angles and their supplements add up to 180 each. I hope this helps and that it’s right

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4 years ago

Fighting for my life rn

s2008m [1.1K]

Answer:

I think the other side on top is 129 degrees

Step-by-step explanation:

Im not 100 percent sure sorry if im wrong!!!

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3 years ago

If you want to calculate a z score for a test where your raw score was 24, what other information must you know

Sophie [7]

Answer:

mean and standard deviation

Step-by-step explanation:

Im pretty sure im right

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3 years ago

Read 2 more answers

Find the discriminant and the number of real roots for x^2+2x+8=0

forsale [732]

Answer:

Discriminant: -28

Number of real roots: 2

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3 years ago