99% confidence interval for soil water content is approx : A (19.5%, 26.9%)
Given : Mean x' = 23.2% = 0.232 , Standard Deviation s = 1% = 0.01 , Confidence Limit = 99%
Confidence Internal = x' + t ( s / √n)
t at 99% confidence limit, ie 1% ( 0.01 ) critical value
t at 0.01/ 2, for two sided = t 0.005 = 7.4534
0.232 + 7.4534 ( 0.01 / √4 )
= 0.232 + 0.03736
= ( 0.232 + 0.03736 , 0.232 - 0.03736 )
= 0.19474 , 0.26926
= 19.5% , 26.9%
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what is advanced placement subject? From which grade does it start!
anyone has advanced placement as subject???
Answer
it starts in high school but is not recommended for 9th graders.
Step-by-step explanation:
Answer:
I got advanced placement math in 5th grade. That means that I did both 5th and 6th-grade math that year. The extra work was worth it - I am now in 6th grade, but I am doing 7th and 8th-grade math.
Tim saw that a pair of $200 dollar jeans had been marked down by 20%. He told his friend that if you took the new price of the jeans and increased that value by 20%, the jeans would return to the original price of $200. is he correct or no?
Hey there!
The answer is no, they would not return to the original price of $200.
This is because when you decrease 200 by 20%, you get 160. Then, if you increase 160 by 20%, you get 192. This is because 20% of 200 and 20% of 160 is different.
Hope this helps! Have a great day, and good luck on your assignment!
Write an equation for the line (y = mx + b)
Write a sentence explaining a real-life situation that this line could represent. (Make sure you use the word ascending in your sentence.)
How many meals would be packed in 20 hours?
Answer:
y = 125x2500 meal packs in 20 hoursStep-by-step explanation:
As per attached graph, there is proportional relationship with the formula:
y = 125xWe can easily find it using points (0, 0) and (2, 250)
m = 250/2 = 125The situation would be:
Team of volunteers help to pack meals for charity. They can pack 125 meals in an hour. How many meals would be packed in 20 hours?
125*20 = 2500 meal packsCan someone give me the answer and explain it to me? I honestly don't even get this-
The graph shows the number of gallons of white paint that were mixed with gallons of yellow paint in various different ratios:
Graph titled Mixing Paint, horizontal axis labeled Yellow Paint in gallons, and vertical axis labeled White Paint in gallons is shown. The horizontal scale is 0 to 24 in increments of 3. The vertical scale is 0 to 168 in increments of 21. The plotted points are 3, 21 and 6, 42 and 9, 63.
The number of gallons of white paint mixed with 1 gallon of yellow paint is ______.
Answer:
the ratio is 1:7
so the answer is 7 gallons of white paint
Step-by-step explanation:
Hope this helps!!
Answer:
7
Step-by-step explanation:
on the graph, it shows that for every 21 gallons of white paint there are 3 gallons of yellow. Then you divide 3 by 21 and the answer is 7.
What is the solution to the equation 3X + 27 = -2x + 18
Answer:
-9/5 or -1.8
Step-by-step explanation:
3x+27=-2x+18 add 2x to both side
5x+27=18 minus 27 from both side
5x=-9 divide 5
x=-9/5, in decimal form=-1.8
Answer:-9/5
Step-by-step explanation:
3x + 27 = -2x + 18
-27 -27
-3x = -2x - 9
+2x +2x
5x = -9
5x/5 = -9/5
x= -9/5
PLEASE ANSWER ASAP FOR BRAINLEST!!!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
12
Step-by-step explanation:
savings account
deposit: $800
rate: 6% per year
time: 2 years
Answer:
896
Step-by-step explanation:
1. find 12% (because the time is 2 years) of 800 (94)
2. 96 + 800 = 896
3. answer is 896
9 m
Perimeter = 42 meters
length
Answer:
Ok but what is this for
Step-by-step explanation:
CORRECT ANSWER GETS BRAINLEYY
Answer:
D
Step-by-step explanation:
[tex]w = x + \frac{y}{z}\\\\w-x = \frac{y}{z}\\\\(w - x)*z = y\\\\z = \frac{y}{w-x}[/tex]
AS ALWAYS, DUE TODAY!!! WILL GIVE EVERYTHING GOOD!!! NOTE: I NEED THE COORDINATES!!! I STILL NEED HELP WITH THIS!!!
Answer:
(2, 5)
Step-by-step explanation:
A political scientist wants to know how college students feel about the Social Security system. She obtains a list of the 3456 undergraduates at her college and mails a questionnaire to 250 students selected at random. Only 104 questionnaires are returned.
1. What is the population in this study?
2. What is the sample size?
Answer: See explanation
Step-by-step explanation:
1. The population in a research are the group of people that the research study carried out by a researcher will affect. In this case, the population will be 3456.
2. The sample study are those that took part in the research. In this case, the sample study will be 104 since they're the ones that took part and returned the questionnaires.
A +40 =0. What is the value of A?
Answer:
-40
Step-by-step explanation:
Answer:
hope you for the answer
Step-by-step explanation:
A+40=0
A=0-40
A=-40#
What is 0.25 as a fraction
Answer:
1/4
Step-by-step explanation:
[tex]\frac{1}{4}[/tex]
Answer: 1/4
Step-by-step explanation:
Trust me ;)
A manufacturing firm tests job applicants. Test scores are normally distributed with a mean of 500 and a standard deviation of 50. What is the probability that the candidate score is 600 or greater
Answer:
The probability that the candidate score is 600 or greater
P(X≥ 600 ) = 0.0228
Step-by-step explanation:
Step(i):-
Given mean of the Population = 500
Given standard deviation of the Population = 50
Let 'X' be the random variable in normal distribution
Given X = 600
[tex]Z = \frac{x-mean}{S.D} = \frac{600-500}{50} = \frac{100}{50} =2[/tex]
Step(ii):-
The probability that the candidate score is 600 or greater
P(X≥ 600 ) = P(z≥2)
= 0.5 - A(2)
= 0.5 -0.4772
= 0.0228
Final answer:-
The probability that the candidate score is 600 or greater
P(X≥ 600 ) = 0.0228
What is the slope of y=-5+4x
h(x)=4-2x find h (-3)
Answer:
10
Step-by-step explanation:
h(x) = 4 - 2x
h(-3) = 4 - 2*(-3)
= 4 + 6
= 10
Is the relationship between time and distance an arithmetic sequence?
Explain.
An investor purchased 100 shares of stock in a company for $1,500. One year later, the investor sold all the shares for $1,750. What is the investor's rate of return?
Answer:
16 2/3%
Step-by-step explanation:
rate of return is the profit (1750 - 1500) over the original investment
250/1500 = .1666 or 16 2/3%
Answer: .1666
Step-by-step explanation:
2. 2x2 + 24x + 13
How do I write the following in vertex form
Answer:
y=2(x+6)^2 -59
Step-by-step explanation:
1) What is the sample space for the given situation?
A) [2, 3, 4, 5, 6, 7, 8, 9)
B) [3, 4, 5, 6, 7, 8, 9)
(1,3,5,7,9
D) {3,5,7)
Please help
Answer:
false_(a) 3 € {2,4,6,8} false_(b) 0 € false (c) {1} € {1, 2, 3} true_(d) {2} S {1, 2, 3} true (e) {1, 3, 5, 7, 9) = {1, 5, 9, 3, 7) false_(f) {1,3,5, 9) = {1,3,5,9} true_ () Ø Ç {1,3
Step-by-step explanation:
i don't know about this is this it ?
What’s 36 x 99? I don’t know, do you?
Answer:
3564
Step-by-step explanation:
calculator, dude.
Answer:
Its 3,464 *smh
If you had 99 barrels of oil, then multiplied it why 36, how much would u have?
Answer - 3,464
Subtract 11 hour and 10 hour 25 minute
Answer:
Step-by-step explanation:
Your question isn't well written but I guess that you want to calculate the difference that exist beteeeh11 hour and 10 hour 25 minute. Thus will be:
= 11 - 10:25
= 35 minutes
It should be noted that 60 minutes = 1 hour.
During four trips to the arcade, Julie has collected ticket amounts of 15, 60, 78, and 94.
What is the fewest number of tickets she can collect during her final visit to have an average of 70 tickets per visit?
Answers:
During four trips to the arcade, Julie has collected ticket amounts of 15, 60, 78, and 94.
the screen shot contains the answer!
What is the fewest number of tickets she can collect during her final visit to have an average of 70 tickets per visit?
103
hope this helps :)
Pythagorean theorem
Answer: The area of the square whose side is the hypotenuse is equal to the sum of the areas of the squares on the other two sides. Quote the actual definition of the Pythagorean theorem.
Pythagorean theorem
in the right angle triangles there is a relationship that governs the length of the three sides. if we knows the length of any two sides, the third side may be calculated by the use of the Pythagorean theorem.
This theorem states that the square on the hypotenuse of a right angled triangle is equal to the sum of the squares on the remaining two sides.
we only use Pythagorean theorem to find the length of the missing side of a right angled triangle only.
Maria walked 3 km west and 4 km south. How far is she from her starting point?
Answer:
7 km?
Step-by-step explanation:
Determine which of the lines, if any, are parallel. Explain.
Line a: 4y +x=8
Line b: 2y + x = 4
Line c: 2y = -3x + 6
; The slopes are
Answer:
Parallel lines have same slope but different y-intercept
None of the given equations have same slope. Therefore lines are not parallel.
Step-by-step explanation:
Slope of Line a: 4y +x=8 is -1/4
Slope of Line b: 2y + x = 4 is -1/2
Slope of Line c: 2y = -3x + 6 is -3/2
Since the slope of the parallel lines is equal and the slope of the given lines is not equal the lines are not parallel.
What is the slope?The ratio that y increase as x increases is the slope of a line. The slope of a line reflects how steep it is, but how much y increases as x increases. Anywhere on the line, the slope stays unchanged (the same).
[tex]\rm m =\dfrac{y_2-y_1}{x_2-x_1}[/tex]
It is given that, the lines are.
Line a: 4y +x=8
Line b: 2y + x = 4
Line c: 2y = -3x + 6
Line a,
4y +x=8
4y= -x+8
y=-1/4x+2
Compare the given equation with the standard equation, y=mx+c in order to find the value of slope(m).
The slope of line a is -1/4.
Line b:
2y + x = 4
2y=-x+4
y= -1/2x+2
The slope of line b is -1/2.
Line c:
2y = -3x + 6
y= -3/2x+3
The slope of line c is -3/2
The slopes of the line 4y +x=8, 2y + x = 4 and 2y = -3x + 6 will be -1/4, -1/2 and -3/2 respectively.
Thus, if the slope of the parallel lines is equal and the slope of the given lines is not equal the lines are not parallel.
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Scale factor: 2:1
10 in
5 in
13 in
Scale drawing
Object
A. Side a is 26 inches long, side bis 20 inches long, and side cis 10
inches long
B. Side a is 15 inches long, side bis 12 inches long, and side cis 7
inches long
C. Side a is 11 inches long, side bis 8 inches long, and side cis 3
inches long
D. Side ais 2.5 inches long, side bis 5 inches long, and side cis 6.5
inches long
Answer: A. Side a is 26 inches long, side b is 20 inches long, and side c is 10.
Step-by-step explanation:
Scale factor for drawing = 2:1
Dimensions of drawing : 10 in, 5 in, 13 in
Dimension of object = Scale factor x Dimension of drawing
Sides of object:
2 x 10 in =20 in [b]
2 x 5 in = 10 in [c]
2 x 13 in = 26 in. [a]
Hence, the correct option is
A. Side a is 26 inches long, side b is 20 inches long, and side c is 10.
Answer:
Side a is 2.5 inches long, side b is 5 inches long and side c is 6.5 inches long.
Step-by-step explanation:
Which pair of numbers has a sum of 100?
A 57, 53
B 37, 53
C 47, 73
D 37, 63
Answer:
D
Step-by-step explanation:
Add 30 and 60 and get 90 then add the leftover 7 and 3 which equals 10 now add both 90 and 10 which equals 100
PLEASE HELP WILL GIVE BRAINLIEST!!!!! Type the correct answer in each box. Use numerals instead of words. If necessary, use / for the fraction bar(s).
Let x represent the measure of angle ACD, and let y represent the measure of angle BCF.
The value of x is ____° and the value of y is ____°.
https://cdn.app.edmentum.com/EdAssets/75daf5dd3ed54096ba433c14250fa639?ts=635036779654800000
Answer:
in the triangle ACB
∠ACB+90+34=180-----> ∠ACB=180-(90+34)----> ∠ACB=56°
∠ACD and ∠ACB-----> are supplementary angles
so
∠ACD+∠ACB=180-----> ∠ACD=180-56----> 124°------> x=124°
the answer Part 1) is x=124°
Part 2)
∠ACB+∠BCF+80=180-----> ∠BCF=180-(∠ACB+80)---> 180-(56+80)
∠BCF=180-136----> 44°-----> y=44°
the answer Part 2) is y=44°
Step-by-step explanation:
Ben starts walking along a path at 3 mi/h. One and a half hours after Ben leaves, his sister Amanda begins jogging along the same path at 5 mi/h. How long (in hours) will it be before Amanda catches up to Ben?
Answer:
2 hours 15 minutes
Step-by-step explanation:
Given that :
Ben's speed = 3 mi/hr
One and half hours after Ben leaves = 1.5 hours
Ben's distance = 3 mi/hr * 1.5 = 4.5 miles
Amanda's speed = 5 mi/hr
Time taken before Amanda catches up:
Let time taken = x
Distance = speed * time
Ben's distance = Amanda's distance
4.5 mi + (3 * x) = 5 * x
4.5 + 3x = 5x
4.5 = 5x - 3x
4.5 = 2x
x = 4.5 / 2
x = 2.25 hours
Time taken = 2.25 * 60 = 135 minutes = 2 hours 15 minutes
It would take Amanda 2.25 hours to catch up with Ben
Speed is the ratio of distance to time. It is given by:
Speed = distance/time
Given that Ben covers a distance d at time t, hence:
3 = d/t
d = 3t
Since Amanda leaves One and a half hours (1.5) after Ben leaves, hence Time = t - 1.5
5 = d/(t - 1.5)
d = 5t - 7.5
Since they catch up, hence:
3t = 5t - 7.5
2t = 7.5
t = 3.75 hours
Time for Amanda = t - 1.5 = 3.75 - 1.5 = 2.25 hours
Hence it would take Amanda 2.25 hours to catch up with Ben.
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