Not enough information is given to answer this question. If there was 100% water at the beginning of the hike and now there is 80% it would be 20% but without the information, you cant know.
Jamall has 20 mo of planes and cars. He has three times as many cars in points. What is the
But what is the question
(x-8) (2x +9)
Test the equivalency of the two expressions by using the value x =9. Show your test.
im not being rude i was just trying yo say sais the Anser but.it wouldnt let mr so now im sad
What is 5.5.5 written in exponential form?
A
25
B
53
с
15
D
55
Answer:
5^3
Step-by-step explanation:
5*5*5
5 multiplied 3 times is
5^3
Answer:
5 ^ 3
Step-by-step explanation:
Which answer choice is equal to −(2÷3)?
Answer: -2÷3
Step-by-step explanation:
-(2÷3) = -2÷3
Richard is W years old express algebraically is age 10 years ago
Answer:
W-10
Step-by-step explanation:
if Richard is W years old then subtract 10 from W
Answer:
W-10
Step-by-step explanation:
Subtract his 10 from his current age
Write an equation for the description. Ten times the sum of half a number x and 6 is 10.
Answer:
10 x ( 1/2x + 6 ) = 10
I’m confused, what would the answer be? I need it ASAP please
Answer:
It is A
Step-by-step explanation:
An industrial/organizational psychologist is consulting with Family Practice Pediatrics, which has just lost several of its best doctors to a rival pediatric practice. The management at Family Practice would like to know what it can do to increase job satisfaction for its remaining pediatricians. The psychologist is trying to determine whether significant information will be lost if she surveys a subset rather than every single pediatrician at Family Practice.
The following table lists the job satisfaction scores for all eight pediatricians at Family Practice as well as four examples of possible four-pediatrician samples. At the bottom of the table, the variance listed in the second column for all eight pediatricians is the population variance for the eight pediatricians (that is, sigma^2 = SS/N = SS/8). The variances listed in the third through the sixth columns are the sample variances for each of the four-pediatrician samples (that is, s^2 = SS/(n - 1) = SS/3).
Pediatrician Satisfaction Sample 1 Sample 2 Sample 3 Sample 4
A 5 x x x
B 6 x x x x
C 8 x x x
D 3 x
E 7 x x
F 2 x
G 8 x x
H 9
Mean 6.00 6.75 6.50 5.25 6.00
Variance 5.50 2.25 1.67 6.25 4.67
What is the mean of the four sample means?
What is the mean of the four sample variances?
A sample statistic is_______ if the average value of the sample statistic, obtained over all possible samples, is equal to the population parameter.
A sample statistic is_______ if it consistently underestimates or overestimates the corresponding population parameter.
A sample mean (that is, M = sigma X/n) is_________ estimator of the population mean. A sample variance that is computed as s^2 = SS/(n - 1) is estimator of the population variance.
Complete Question
The complete question is shown on the first uploaded image
Answer:
What is the mean of the four sample means is [tex]\= x = 6.125 [/tex]
What is the mean of the four sample variances is [tex]\= x_v = 3.71[/tex]
A sample statistic is an unbiased point estimator if the average value of the sample statistic, obtained over all possible samples, is equal to the population parameter.
A sample statistic is biased if it consistently underestimates or overestimates the corresponding population parameter.
A sample mean (that is, M = sigma X/n) is unbiased estimator of the population mean
A sample variance that is computed as s^2 = SS/(n - 1) is unbiased estimator of the population variance.
Step-by-step explanation:
From the question we are told that
Mean 6.00 6.75 6.50 5.25 6.00
Variance 5.50 2.25 1.67 6.25 4.67
Generally the mean of the four sample means is mathematically represented as
[tex]\= x = \frac{6.00+ 6.75 + 6.50 + 5.25 + 6.00}{4}[/tex]
=> [tex]\= x = 6.125 [/tex]
Generally the mean of the four sample variances is mathematically represented as
[tex]\= x_v = \frac{5.50+ 2.25+ 1.67+ 6.25 +4.67}{4}[/tex]
=> [tex]\= x_v = 3.71[/tex]
salome tiene 4 veces la edad de esmeralda.si ambas edades suman 75 años¿que edad tiene cada una?
Gloria deposited $500 into a bank account that earned 7.5% simple interest each year. She earned $225 in interest before closing the account.
No money was deposited into or withdrawn from the account.
How many years was the money in the account?
Round your answer to the nearest whole year.
Answer:
6
Step-by-step explanation:
7.5 % × 500 = 37.5
37.5 × 6 = 225
Answer:
6
Step-by-step explanation:
Lead in Medicine Listed below are the lead concentrations (in μg/g) measured in different Ayurveda medicines. Ayurveda is a traditional medical system commonly used in India. The lead concentrations listed here are from medicines manufactured in the United States (based on data from "Lead, Mercury, and Arsenic in US and Indian Manufactured Ayurvedic Medicines Sold via the Internet," by Saper et al., Journal of the American Medical Association, Vol. 300, No. 8. Use a 0.05 significance level to test the claim that the mean lead concentration for all such medicines is less than 14 μg/g.
3.0 6.5 6.0 5.5 20.5 7.5 12.0 20.5 11.5 17.5
Step-by-step explanation:
We start by calculating mean and standard deviation
Mean = sum of all values/total number of values
= 110.5/10
= 11.05
Standard deviation = √375.725/9
= √41.7472
= 6.46
Null hypothesis =
h0: μ = 14
Alternate hypothesis =
H1: μ < 14
Alpha is set at 0.05
Test statistic
T = mean - (μ)/(sd/√n)
=(11.05-14)/(6.46/√10)
= -2.95/2.0428
= -1.4441
P value calculator
df = n-1 = 10 -1 = 9
P Value = trust(x,df,tails)
= trust(1.4441,9,1)
= 0.0913
In conclusion our pvalue is greater than alpha level at 0.05 so we do not have sufficient evidence to reject the null hypothesis. We do not have enough evidence to accept the alternate so we reject claim that mean lead concentration for all such medicine is < than 14μg/g
What is the first step in ordering fractions with different denominators
Answer:
Find the common denominator. :)
HWLP NOW IM FREAKING OUT INNEED HELP
Answer:
I believe the answer is 14
Step-by-step explanation:
0.25x14=3.5 or 3 1/2 hope this helped!! <3
Answer:
The answer is C
Step-by-step explanation:
Hope this helped!
The total price for a group of people at a restaurant is $113.40. Each person pays
$16.20. How many people argjn the group?
16 people
70 people
7 people
10 people
Answer:
7 people
Step-by-step explanation:
can someone help me? The question is the picture below. 30 POINTS!!!
Answer:
Hope that helps! (ignore this, I just need more characters lol)
find the value of x in the below complementary angle 3x(5x+2)
Answer:
The value of x is 11
Step-by-step explanation:
Two angles are complementary if the sum of their measures is 90°
Let us use this rule to solve our question
∵ The angle of measure (3x)° and the angle of measure (5x + 2)°
are complementary angles
→ That means their sum equals 90°
∴ 3x + 5x + 2 = 90
→ Add the like terms in the left side
∵ (3x + 5x) + 2 = 90
∴ 8x + 2 = 90
→ Subtract 2 from both sides to move 2 from the left side to the right side
∵ 8x + 2 - 2 = 90 - 2
∴ 8x = 88
→ Divide both sides by 8 to find x
∵ 8x/8 = 88/8
∴ x = 11
∴ The value of x is 11
At the supermarket you can fill your own honey bear container. A customer buys 12 oz of honey for $5.40. i need help.
Answer:
Ok, So what I would do first if I were you Is probably divide $5.40 by 12. So that would equal $0.45. So that mean it costs $0.45 per oz.
Step-by-step explanation:
How this helped!
Dave has 500 baseball cards, which is as many cards as Eric and Travis have combined. Eric has three times as many cards as Travis. If Travis is donated x cards, Eric 3x cards, and Dave 500 cards. What is the total number of calls that all of them have? Also, explain how we figure out the amount of cards Travis has and the amount Eric has
Answer:
regtrgerf
m klbhjkb.Step-by-step explanation:
Can't figure this out extremely need help). A line goes through the points (8,9) and ( -2,4). A) what is the slope of the line? Show your work. B) Write the equation of the line in point -slope form. Show your work. C) Write the equation of the line in slope-intercept form. Show your work. ( Brainliest Answer and please be honest with your response). Make sure you show all your work please and thank you.
Step-by-step explanation:
Im sorry but I found it more easy writing it on a paper!
Help ASAP , 15 points and a brainy.
Answer:
B
Step-by-step explanation:
Answer:
I think the answer is B. It slopes downward from left to right.
PLEASE HELP ME I WILL GIVE BRAINLIEST!!!!!!
A bottle of medication contains 30 mls. After withdrawing 2.25 mls for an injection, how many
mls of medicine remain in the bottle?
Help please
Answer:
27.75 mls
Step-by-step explanation:
30mls - 2.25mls is equal to 27.75mls
There are 6 tickets to winning a trip, 10 tickets to winning a computer, and 184 tickets to
winning a pen. What is the probability of winning either a trip or a computer?
Answer:
[tex] \frac{2}{25} [/tex]
is the probability of winning either a trip or a computer
Jordan bought 7 chicken wings for $14.00. If Jordan spent $36.00, how many chicken wings did he buy?
Answer:
18
Step-by-step explanation:
7/14 = x/36
7*36=14*x
252=14x
x=252/14
x=18
Hope this helped !
Find the least common multiple of 6a2 and 5a3.
In other words, which one doesn't belong?
x>-2
3< x
x < 4
5>6
Please help!!
Answer:
5>6
Step-by-step explanation:
Determine the area of e
1.
4inch
There are 16 boys and 12 girls in Mr.willam’s class. What is the ratio of boys to girls
Answer:
16:12 or 16 to 12
Step-by-step explanation:
Answer:
16:12 or 16 to 12
The ratio of boys to girls is 16 to 12.
What is the distance between points (13,1) and (9,-4)
Answer:
5/4
Step-by-step explanation:
y2 -y1 -4-1=-5
x1 -x2 9-13=-4
Subtract the rational expressions x/x+1 - 2/x
Answer:
(2x-2)/x
Step-by-step explanation:
x/x-2/x+1
LCM is x
(x-2+x)/x
(2x-2)/x