Answer:
A. A trapezoid has only 1 pair of parallel sides, but a parallelogram has 2.
That's the answer.
Answer:
a
Step-by-step explanation:
In a study of speed dating, female subjects were asked to rate the attractiveness of their male dates, and a sample of the results is listed below (1not attractive; 10extremely attractive). Find the range, variance, and standard deviation for the given sample data. Can the results be used to describe the variation among attractiveness ratings for the population of adult males
Answer:
[tex]Range = 7[/tex]
[tex]s^2 = 3.53[/tex] -- Variance
[tex]s = 1.88[/tex] --- Standard Deviation
No, it can not be used
Step-by-step explanation:
Given
I'll use the data in the attachment to answer the question.
(a) Range:
[tex]Range = Highest - Lowest[/tex]
From the attached data.
[tex]Highest = 10[/tex]
[tex]Lowest = 3[/tex]
So:
[tex]Range = 10 - 3[/tex]
[tex]Range = 7[/tex]
(b) Variance:
We start by calculating the mean:
[tex]\overline x = \frac{\sum x}{n}[/tex]
[tex]\overline x = \frac{5 + 8 + 3 + 8 + 6 + 10 + 3 +......+ 8+8+7}{26}[/tex]
[tex]\overline x = \frac{171}{26}[/tex]
[tex]\overline x = 6.58[/tex] --- approximated
The sample variance is then calculated using:
[tex]s^2 = \frac{\sum(x_i - \overline x)^2}{n-1}[/tex]
This gives:
[tex]s^2 = \frac{(5-6.58)^2+(8-6.58)^2+(3-6.58)^2+(8-6.58)^2+..............+(8-6.58)^2+(8-6.58)^2+(7-6.58)^2}{25-1}[/tex]
[tex]s^2 = \frac{88.3464}{25}[/tex]
[tex]s^2 = 3.53[/tex] --- approximated
(c) Standard Deviation.
This is calculated as:
[tex]s = \sqrt{s^2[/tex]
Substitute 3.53 for [tex]s^2[/tex]
[tex]s = \sqrt{3.53}[/tex]
[tex]s = 1.88[/tex] --- approximated
(d) No, it can not be used because the selected sample is too small to represent the total population and as such the result of the measure of variations can not be used.
what is -6(a + 8) simplified?
Answer:
-6a-48
Step-by-step explanation:
Answer:
-6a - 48
Step-by-step explanation:
distribute
-6 x a = -6a
-6 x 8 = -48
put the answer together
-6a - 48
How do I do Question 9?
Answer:
$9.30 x 30 minutes and $9:30 x 5 hours
Step-by-step explanation:
if a function f is defined such that f(x+3) = f (x) + f(3) show that f(-3) = -f(3)
Answer:
[tex]Solution,\\f(x+3)=f(x)+f(3).......(1)\\Put~x=0~in~eq^n~(1),\\f(0+3)=f(0)+f(3)\\or, f(3)=f(0)+f(3)\\or, f(0)=0.........(2)\\Now,\\Put~x=-3~in~eq^n(1),\\f(-3+3)=f(-3)+f(3)\\or, f(0)=f(-3)+f(3)\\From~eq^n(2),\\0 = f(-3)+f(3)\\or, f(-3)=-f(3)~proved[/tex]
A mathematician designed your favorite video game. All of the caves have either two or three portals to the next universe. The total number of portals is 95 more than the total number of caves. The number of two-portal caves is three times the number of three-portal caves. How many caves are in the video game
Answer:
95 - 9x
Step-by-step explanation:
All caves have ; 2 or 3 portals
Total portals = 95 more than number of caves
Let :
Number of 3 portal caves = x
Number of 2 portal caves = 3x
Total Number of portals :
3x + 2(3x) = 3x + 6x = 9x
Number of caves :
95 - 9x
find the measure of b
Answer:
93°
Step-by-step explanation:
8x-25+7x-5=180
15x-30=180
15x=210
x=14
<B=7(14)-5
<B=93°
HELP PLS 30 PTS !!!!!!!!!!!!
Answer:
its the second one bc if u multiply 8.34 times 5305 it equals to 44243.7 the diameter of the pool was jus to throw u off it was unneeded information.
Step-by-step explanation:
Which estimate is closest to the actual value of (2.99548) ⋅ (1.8342)? CHOOSE ALL THAT APPLY!
A. 4.8
B. 5.5
C. 6.2
D. 8.3
Dominic earns $15 an hour working at a movie theater. last week he worked h hour at the concession stand and three times as many hours at the ticket counter. how much did Dominic earn last week
Answer:st week he worked h hours at the concession stand and three times as many hours at the ticket ... How much did he make before the raise? ... Alice earns 1.5 times her hourly rate for each hour she works after 40 hours in a week. ... Dominic earns $18 an hour plus $25 an hour for every hour of overtime.
Step-by-step explanation:
find the 7th term in the sequence?
1/3,1,3,9
Answer:
27 64 213 1004
Step-by-step explanation:
its 3 by 3 so its 213
what is this ???????????
Answer:
The heavier an object the harder it is to move.
Step-by-step explanation:
I'm pretty sure this is it
Answer:
C. Gravity and Friction combine to make a train hard to move.
Step-by-step explanation:
This option makes the most sense based off of the text. In the text it says "Since gravity and friction make trains harder to move...." None of the other options really match the text either.
Hope it helps!
If Sarah has 20 apples and Mike has 17 apples I'd they gave Dave 5 apples each how many will they have in all
Answer:
37 because they gave dave 5 of their own apples each its not like they got more then gave it to him
Step-by-step explanation:
Joy borrowed $2,000 from the bank and agreed to pay an annual interest rate of 6%for 24 months. What is the amount Of interest she will pay on this loan?
Answer:
2,240
Step-by-step explanation:
6% of 2,000 is 120 so times that by 2
Answer:
$240.00
Step-by-step explanation:
2000(.06)(2)=240
? how do I do this problem
Answer:
if im not wrong, youd distribute first.. check below !!
Step-by-step explanation:
5 (x - 3) > 15
5x - 15 > 15
5x > 30
5x/5 > 30/5
x > 6 !!!
i hope this helps !!!
I need help with thiissss
Answer:
25°
Step-by-step explanation:
Angles on a straight line equal 180°, so 180-155=25
Answer:
B I believe but I'm not 100%
The marked price of a sweater at the clothing store was $24.
During a sale, a discount of 25% was given. A further 15%
discount was given to the customers who have the store's
credit card. How much would a member customer need to pay
for the sweater during the sale if the customer paid with the
store's credit card? Round your answer to the nearest cent.
Answer:
Ambitious Ambitious Ambitious Ambitious
What type of number is -4.8 +56i?
Answer:
Step-by-step explanation:
It's an imaginary number, where i = √(-1)
It’s due late tonight can some pls help me pass
-12 times 1over3 help.
Answer:
-4
Step-by-step explanation:
. Three professors examined awareness of four widely disseminated retirement rules among employees at University of Utah. These rules provide simple answers to questions about retirement planning. At the time of the investigation, there were approximately 10,000 benefited employees, and 3,095 participated in the study. Demographic data collected on these 3,095 employees included gender, age (years), education level (years completed), marital status, household income ($), and employment category.(30pts)(a) Describe the population of interest.(b) Describe the sample that was collected.(c) Indicate whether each of the demographic variables mentioned is categorical or numerical.
Answer:
a) The population of interest = 10,000 benefited employees. It includes all benefited employees.
b) The sample collected = 3,095. These are the benefited employees who participated in the study.
c) Indication of demographic variables as categorical or numerical:
Demographic data: Categorical or Numerical
Gender = Categorical
Age (years) = Numerical
Education level = Numerical
(years completed)
Marital status = Categorical
Household income ($) = Numerical
Employment Category = Categorical
Step-by-step explanation:
a) Data and Calculations:
Population of interest = 10,000 benefited employees
Sample = 3,095 participants
Demographic data:
Gender
Age (years)
Education level (years completed)
Marital status
Household income ($)
Employment Category
b) A variable is numerical value (e.g. length, test scores, etc.). It is a continuous variable. A categorical variable assumes a limited or fixed number of possible values, or it is categorized in groups.
Is 3/7 bigger then 3/5
Answer:
No they are equivalent
Step-by-step explanation:
3/7 =21/35
3/5=21/35
Answer:
no
Step-by-step explanation:
find a common denominator we are going to do 35
3/7= 15/35
3/5= 21/35
Which is greater, 4/5 or 75%?*
Answer:
4/5
Step-by-step explanation:
4/5 is equal to 80%, which is more than 75%. How you can figure this out is that you can determine 4/5 of 100, (divide 100 by 5 and pick the 4th part,) to get 80. 75% is equal to 3/4, so divide 100 by 4 and shoose the 3rd part, 75. Therefore, 4/5 is greater than 75%.
Hope this helps! :)
Solve for the value of n.
pls help I will give brainliest + 34 points!
9514 1404 393
Answer:
n = 17
Step-by-step explanation:
The angle sum theorem tells you the angles add up to the linear angle of 180°.
(3n -5)° + 90° +44° = 180°
3n + 129 = 180 . . . . . . . . . . collect terms
3n = 51 . . . . . . . . . . . . subtract 129
n = 17 . . . . . . . . . . divide by 3
7)
Each choice compares two expressions. Choose ALL pairs of expressions that are equivalent.
A)
y + y + y = 3y
B)
2c - 5 = ((x 0 - 5
K2 + 3;= k + k + i ++
D
3x + 2y = (x * * * ) + x)
E)
1a + 2b = (a* a * a) + (6 + 6)
Answer:
the Answer Is A and E
Step-by-step explanation:
(SAT Prep) Find the value of x.
Answer:
58
Step-by-step explanation:
I think
somebody help plz how can i solve the following equations of 6v+3=21
I have a number
First I multiply by 4
Then I add 12
Next I divide by 5
As a result I get 2
What is my starting number?
please help
Mhanifa please help I will mark brainliest
Answer:
36°90°Step-by-step explanation:
Question 1
x = 180° - 2*72° = 180° - 144° = 36°Question 2
x + 2(x/2) = 180°2x = 180°x = 90°If you buy one papaya for $3 then how many can you buy with $24
Answer: You can buy 8 papayas.
Step-by-step explanation:
24 divided by 3 =8
Answer:
8 Papayas
Step-by-step explanation:
24 divided by 3= 8
the question is attached with a document.
Answer:
92,960,000
Step-by-step explanation:
When multiplying by 10 to the power of something. You can just add move the decimal point "n" times to the right. (where n is the exponent over 10)
For example:
1.23456 * [tex]10^{2}[/tex] = 123.456 (the decimal point moved 2 steps to the right)
4 * [tex]10^{4}[/tex] = 40000 (the decimal point moved 4 steps to the right)
Hope i was able to help you!
If it was something you didn't understand, just ask me in the comments below this answer!
Have a good day.