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
dybincka [34]
3 years ago
14

Item 16 Explain why a change from 20 to 40 is a 100% increase, but a change from 40 to 20 is a 50% decrease. Increasing 20 to 40

is the same as increasing 20 by . So, it is a 100% increase. Decreasing 40 to 20
Mathematics
1 answer:
MAXImum [283]3 years ago
7 0

Answer:

Increasing 20 to 40 is the same as increasing 20 by 20 (or itself), so it is a 100% increase. Decreasing 40 to 20 is the same as decreasing 40 by 1/2 or by 20. So it is a 50% increase.

Step-by-step explanation:

You might be interested in
A sociologist recently conducted a survey of senior citizens who have net worths too high to qualify for Medicaid but have no pr
hjlf

Answer:

a) s= 9.74

D. 9.74

b) Median= 74

B. 74

Step-by-step explanation:

Part a

We have the following dataset given:

69 74 75 62 70 93 64 69 61 88 67 77 87 90 66 91 77 63 82 82 71 74 76 65 83

We can begin calculating the sample mean with the following formula:

\bar X = \frac{\sum_{i=1}^n X_i}{n}

And replacing we got:

\bar X = 75.04

Now we can calculate the sample deviation with the following formula:

s =\sqrt{\frac{\sum_{i=1}^n (X_i-\bar X)^2}{n-1}}

And after replace we got:

s= 9.74

Part b

For this case we need to sort the value on increasing way:

[1] 61 62 63 64 65 66 67 69 69 70 71 74 74 75 76 77 77 82 82 83 87 88 90 91 93

And the median would be the value in the position 13 and we got:

Median= 74

6 0
3 years ago
Help me please. I really need it​
BlackZzzverrR [31]

Answer:

Step-by-step explanation:

can you post a better pic please

6 0
3 years ago
Read 2 more answers
Which answer describes the transformation of f(x)=x2−1 to g(x)=(x+2)2−1 ?
notsponge [240]
That would be the second choice. Translation of 2 to the left
4 0
3 years ago
Read 2 more answers
Identify whether the series sigma notation infinity i=1 15(4)^i-1 is a convergent or divergent geometric series and find the sum
const2013 [10]

Answer:  The correct option is

(d) This is a divergent geometric series. The sum cannot be found.

Step-by-step explanation: The given infinite geometric series is

S=\sum_{i=1}^{\infty}15(4)^{i-1}.

We are to identify whether the given geometric series is convergent or divergent. If convergent, we are to find the sum of the series.

We have the D' Alembert's ratio test, states as follows:

Let, \sum_{i=1}^{\infty}a_i is an infinite series, with complex coefficients a_i and we consider the following limit:

L=\lim_{i\rightarrow \infty}\dfrac{a_{i+1}}{a_i}.

Then, the series will be convergent if  L < 1 and divergent if  L > 1.

For the given series, we have

a_i=15(4)^{i-1},\\\\a_{i+1}=15(4)^i.

So, the limit is given by

L\\\\\\=\lim_{i\rightarrow \infty}\dfrac{a_{i+1}}{a_i}\\\\\\=\lim_{i\rightarrow \infty}\dfrac{15(4)^i}{15(4)^{i-1}}\\\\\\=\lim_{i\rightarrow \infty}\dfrac{15(4)^i}{15(4)^{i}4^{-1}}\\\\\\=\dfrac{1}{4^{-1}}\\\\=4>1.

Therefore, L >1, and so the given series is divergent and hence we cannot find the sum.

Thuds, (d) is the correct option.

7 0
3 years ago
Read 2 more answers
Please help
ioda

Answer:

im 12!! how do you do this

Step-by-step explanation:

3 0
3 years ago
Other questions:
  • What is 72/63 in simplest form?
    10·2 answers
  • Find the product of 2536 and 8
    15·2 answers
  • I need help with this quickly
    9·1 answer
  • A regular hexagon has an area of 750.8 cm 2. The side length is 17 cm. Find the apothem.
    15·1 answer
  • Elimination<br> -3x-y=2 <br> X-y=2
    9·2 answers
  • Miguel wants to use coordinate geometry to prove that the opposite sides of a rectangle are congruent. He places parallelogram A
    9·1 answer
  • (13x+2)+(5x+24)+(7x+7)+(8x-3)=360<br><br>X=
    7·1 answer
  • 15, 15, 17, 20, 21, 28<br> whats the mean, median and mode?
    14·1 answer
  • Which set of side lengths forms a right triangle? 2 3 13, 4 6 10, 9 12 18, 15 36 39 ,
    13·1 answer
  • PLS HELP ME ASAP!! TEN POINTS!!! Select each correct answer.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!