1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
GenaCL600 [577]
3 years ago
5

How is the sum expressed in sigma notation? 1/64+1/16+1/4 + 1 + 4

Mathematics
1 answer:
shusha [124]3 years ago
5 0

9514 1404 393

Answer:

  sum = ∑[n=1,5] 4^(n-4)

Step-by-step explanation:

First of all, you need to be able to describe the n-th term.

Here, we  have ...

  term #: 1, 2, 3, 4, 5

  value: 4^-3, 4^-2, 4^-1, 4^0, 4^1

That is, the exponent of 4 is 4 less than the term number. So, the n-th term is 4^(n-4). The sum of the 5 terms shown is then ...

  \displaystyle sum=\sum_{n=1}^5{4^{n-4}}

You might be interested in
Use the standard norml distribution or the t-distribution to construct a 99% confidence interval for the population mean. Justif
dalvyx [7]

Answer:

E) we will use t- distribution because is un-known,n<30

the confidence interval is (0.0338,0.0392)

Step-by-step explanation:

<u>Step:-1</u>

Given sample size is n = 23<30 mortgage institutions

The mean interest rate 'x' = 0.0365

The standard deviation 'S' = 0.0046

the degree of freedom = n-1 = 23-1=22

99% of confidence intervals t_{0.01} =2.82  (from tabulated value).

The mean value = 0.0365

x±t_{0.01} \frac{S}{\sqrt{n-1} }

0.0365±2.82 \frac{0.0046}{\sqrt{23-1} }

0.0365±2.82 \frac{0.0046}{\sqrt{22} }

0.0365±2.82 \frac{0.0046}{4.690 }

using calculator

0.0365±0.00276

Confidence interval is

(0.0365-0.00276,0.0365+0.00276)

(0.0338,0.0392)

the mean value is lies between in this confidence interval

(0.0338,0.0392).

<u>Answer:-</u>

<u>using t- distribution because is unknown,n<30,and the interest rates are not normally distributed.</u>

4 0
3 years ago
PLEASE HELP ME!!!!!!! THIS IS TIMED!!!!!!!!! PLEASE HELP ME!!!!!!!!! PLEASE!!!!!!!!!!!!!
Cerrena [4.2K]

Answer:

the probability is 2/24 or 8.3%

Step-by-step explanation:

4 0
3 years ago
Find the approximate side length of a square game board with an area of 123 inches to the second power
aleksklad [387]
61.5 or 61 and one half
4 0
3 years ago
Which angle is congruent to CBA?<br> BCD<br> CDA<br> ABC<br> BAD
Angelina_Jolie [31]

Answer:

the second cda is right give brainliest pls

Step-by-step explanation:

7 0
3 years ago
This graph represents a linear relationship between x and y. Which equation best represents the relationship shown in this graph
Alborosie
It is A for sure lemme know it u need anything else:D
8 0
3 years ago
Read 2 more answers
Other questions:
  • Add. 2x+2/x^2+x + 3x+3/x^2+x Answer Choices: A 5/x B 5x/x+1 C 10/x^2 D 5/x+1
    14·1 answer
  • Brandon and Nolan work at a furniture store. Brandon is paid $235 per week plus 6% of his total sales in dollars, x, which can b
    9·1 answer
  • Maria, Denise, and Joseph are making cookies for a bake sale. Maria has 4 times as toany okies for the
    10·1 answer
  • Phil's shadow is half as long as Phil is tall. If he were 4 inches taller and his shadow were 3 inches
    8·1 answer
  • Celeste needs to create a keyword map that branches out from an image of the solar system. Which image best
    5·1 answer
  • Solve for n. 11(n – 1) + 35 = 3n n = –6 n = –3 n = 3 n = 6
    9·1 answer
  • Jaclyn paid $620 to stay at a hotel. She paid $124 per
    11·1 answer
  • A safety light is designed so that the times between flashes are normally distributed with a mean of and a standard deviation of
    15·1 answer
  • Solve for x in the rectangle below​
    14·2 answers
  • Which table shows data with variability?
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!