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Juliette [100K]
3 years ago
9

An arithmetic series is represented by the equation (picture). Which of the following is true?

Mathematics
2 answers:
vladimir1956 [14]3 years ago
5 0

Answer:

C

Step-by-step explanation:

In arithmetic series

\sum \limits _{k=1}^{24}(-6+0.5k)

we have

a_1=-6+0.5\cdot 1=-5.5\\ \\a_{24}=-6+0.5\cdot 24=-6+12=6\\ \\S_{24}=\dfrac{a_1+a_{24}}{2}\cdot 24=\dfrac{-5.5+6}{2}\cdot 24=0.5\cdot 12=6

Thus, the value of the series is equal to the value of the 24th number in the series.

Oxana [17]3 years ago
4 0

Answer:

The answer is C on Edge2020

Step-by-step explanation:

:)

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kondor19780726 [428]

Answer:

its D

Step-by-step explanation:

7 0
3 years ago
15% of the toddlers in a preschool class drink water with their lunch. How many toddlers are in the class if 3 drink water with
Naddika [18.5K]
15%=3
5%=1
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So, there are 20 students in the class.
8 0
2 years ago
Read 2 more answers
Round 27346 to 2 significant figures i need a step by step expansion
belka [17]

Answer:

27000

Step-by-step explanation:

We want to round 27346 to 2 significant figures.

Now, the number already has 5 significant figures, so to reduce it to 2 sig figures, we will have to reduce the 3 digits from the right to zero so that we can have just 2 significant figures by approximating.

Thus, 3 is less than 5 and so 7 cannot increase. Thus, we will have 27000 as the number when reduced to 2 significant figures.

5 0
3 years ago
A ball is dropped out a wimdow that is 36 feet high. how long does it take for the ball to hit the ground
Readme [11.4K]
36 feet to metres = 10.97
first find the final velocity
vf^2 = vi^2 + 2ad
vf^2 = 0 + 2(9.81)(10.97)
vf^2 = 215.2314
vf = 14.6708

vf = vi + at
at = vf - vi
t = (vf - vi)/a
t = (14.6708)/9.81
t = 1.4955seconds
4 0
3 years ago
When you draw a multi-phase sample ____. Group of answer choices
notsponge [240]

Answer:

The correct answer is letter "B": You use information from a first sample for collecting a subsequent subsample for further study.

Explanation:

Multi-phase sampling is a strategy by which a large number of data under study is taken, then a subsample of that pool is taken, and after that, another smaller subsample is taken in an attempt to count with samples that best might represent the whole population. Usually, the process takes collecting two different samples, but it can be applied as many times as necessary.

8 0
3 years ago
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