Answers
Answer:
First box: 35 Negative Result
Second box : 60 Positive Result
Step-by-step explanation:
Contains organic matter
Sample size : 700
95% positive means [tex]\frac{95}{100} \times 700 = 665\\[/tex]
5% negative means [tex]\frac{5}{100}\times 700 = 35[/tex]
Does not contain organic matter
Sample size : 300
20% positive means [tex]\frac{20}{100} \times 300 = 60[/tex]
80% negative means [tex]\frac{80}{100}\times 300 = 240[/tex]
Answer:
Just subtract the less no by greater one .you get the answer.
Positive result of sample test gives a positive result than it is 665/1000*100*=66.5% likely that the soil sample contains organic matter.
Related Questions
Can someone please help me with this fast?
Answers
Answer:
65*
Step-by-step explanation:
12x-7+16x+19=180
28x=168
x=6
12(6)-7=65
Which function is not graph correctly? A. y=cos x. B. y=cot x. C. y=sin x. D.y=tan x. (GRAPHS in photo)
Answers
Answer:
We will begin with the graph of the tangent function, plotting points as we did for the sine and cosine functions. Recall that
tan
x
=
sin
x
cos
x
The period of the tangent function is π because the graph repeats itself on intervals of kπ where k is a constant. If we graph the tangent function on
−
π
2
to
π
2
, we can see the behavior of the graph on one complete cycle. If we look at any larger interval, we will see that the characteristics of the graph repeat.
We can determine whether tangent is an odd or even function by using the definition of tangent.
tan
(
−
x
)
=
sin
(
−
x
)
Step-by-step explanation:
Answer:
it is y=sin x
Step-by-step explanation:
i got it right on the test
Use a table of values to find the solution to the equation f(x)=h(x) where
f (x) = 2/3-x and
h(x)= 3- 2x
Show your work
Answers
9514 1404 393
Answer:
x = 2 1/3
Step-by-step explanation:
We can examine the equations to see where the solution lies.
f(x) = (2/3) -x
This has an x-intercept where y=0, at x=2/3. It has a y-intercept where x=0, at y=2/3. Its slope is -1.
h(x) = 3 -2x
This has an x-intercept where y=0, at x=3/2. It has a y-intercept where x=0, at y=3. Its slope is -2.
__
In the first quadrant, the graph of h(x) is farther from the origin and steeper than the graph of f(x). The lines must cross in the 4th quadrant at some value of x that is greater than 3/2. The fraction in the definition of f(x) suggests that the solution will be a multiple of 1/3.
The attached table shows a couple of guesses at values of x that would make f(x) = h(x). We find that x = 7/3 is the solution we're looking for.
_____
Additional comment
Repetitive function evaluations are done conveniently and with fewer errors by a calculator or spreadsheet that can work with tables of values. Here, we have used a graphing calculator. These tools are readily available for free on almost any phone, tablet, or desktop computer platform.
PLEASE HELP! 30 POINT!!!
What is the value of y when x = 3 in this equation
Y = 2x + 2
Answer:
5
7
8
12
Answers
Answer:
Step-by-step explanation:
8
The temperature at 12 p.m. wa
34. The temperature at 12 a m
was-16. What was the difference
in the temperatures?
An elevator was at the 4floor
It traveled up 18 floors, down 7
floors, up 6 floors and down 2
floors. What floor did the elevator
end up on?
submarine was traveling at 62
feet below sea level. It rose 17
feet, dropped 250 feet, then rose 25
feet. What was the submarines
Final position?
Answers
Answer:
first is 52°C
Step-by-step explanation:
My math assignment is due in 15 min pls help with this question
Answers
Answer:
1st quartile: 2.6
2nd quartile or median: 3.1
3rd quartile: 3.25
Step-by-step explanation:
A class spends 1 hour 15 minutes on
English Language each school day. If
the total time spent in school each day
is 5 hour. What fraction of the time is
spent on English Language
Answers
Answer:
1/4
this is fraction of time spent on English language...
Help besties please flip the picture to see better
Answers
Answer:
E. C= 80+ 12n
Step-by-step explanation:
____________
Write a variable expression for this amount.
fourteen times x
Type the correct answer.
Answers
Answer:
14x
Step-by-step explanation:
14x = 14 x (x) = 14(x)
Please help me!
Will give brainlst :)
Answers
Answer:
Step-by-step explanation:
Answer:
this is a line with a slope of 1 and a y-intercept of 3
simplify : sqrt(25-10sqrt(3) +3)
Answers
Answer:
3.26794919243
Step-by-step explanation:
there is a gamecjwkjcs x,x dzvfbhjhv bzdhu vhaj vuy vrjahfv jhadfv ahjza v zjhv
Answers
Answer:
it is babylonia huming by chris
Find a polynomial f(x) of degree 4 that has the following zeros. 7 (multiplicity 2), 0,-4. Leave your answer in factored form
Answers
Answer:
see below
Step-by-step explanation: 5 30 9 50
This is what I think they are asking for....
the zeroes are x = 0 x = -4 x = 7 twice ?? so
x(x+4)(x-7)² = 0
when I graphed the function it looked to be correct
How many different five digit members can be formed from the digits 5, 6, 7, 8 and 9 if digits can be repeated? If digits cannot be repeated? NO LINKS!!!
Answers
Answer:
Solution given:
5,6,7,8,9,
When repeated:
it has
5 ways for each
different five digit members can be formed from the digits:5*5*5*5*5=3125
When not repeated:
it has
5 ways for 1st
4 ways for 2nd
3 ways for 3rd
2 ways for 4th
1 ways for 5th
different five digit members can be formed from the digits:5*4*3*2*1=120
Each question Sandra answers incorrectly changes her overall score by -3/4 points. Sandras overall score was -4 1/2 points , and then she answered the last question incorrectly. What was Sandras final score
Answers
Which fraction shows a correct way to set up the slope formula for the line containing (2, -4) and (-6, 1)?
Answers
Answer:
Step-by-step explanation:
slope=y2-y1/x2-x1
here x1=2 , y1=-4 , x2=-6 , y2=1
=1-(-4)/2-(-6)
=1+4/2+6
=5/8
-5/8 fraction shows a correct way to set up the slope formula for the line containing (2, -4) and (-6, 1)
What is Slope of Line?The slope of the line is the ratio of the rise to the run, or rise divided by the run. It describes the steepness of line in the coordinate plane.
The slope intercept form of a line is y=mx+b, where m is slope and b is the y intercept.
The slope of line passing through two points (x₁, y₁) and (x₂, y₂) is
m=y₂-y₁/x₂-x₁
the slope formula for the line containing (2, -4) and (-6, 1) we calculate by plugging the values to the slope formula.
m=1-(-4)/-6-2
m=1+4/-8
m=-5/8
Hence, -5/8 fraction shows a correct way to set up the slope formula for the line containing (2, -4) and (-6, 1)
To learn more on slope of line click:
https://brainly.com/question/14511992
#SPJ2
Which triangle isn't similar to QRS?
Answers
Answer:
∆ RPQ
Step-by-step explanation:
__________________
Factor 2x^2 c^2 + 3xc^2- 35c^2
Answers
The graph shows the function f(x) = 2*
What is the value of x when f(x) = 4?
A. 3
B. 1
C. 2
D 0
Answers
Answer:
Step-by-step explanation:
2
Following are the three types of data sets: a. Vehicle speeds on highway I-5 (9 vehicles) 74, 82, 67, 73, 65, 41, 74, 49, 85 b. Sodium grams in canned soup (8 varieties) 4.22, 3.60, 2.68, 2.75, 2.70, 4.17, 2.72, 4.29 c. Campus health center visits (12 students) 1, 5, 6, 13, 2, 3, 1, 3, 3, 1, 4, 3 For each data set, find the median, midrange, and geometric mean. (Round your answers to 2 decimal places. Leave no cells blank. Enter 0 as an answer if undefined.)
Answers
Answer:
Kindly check explanation
Step-by-step explanation:
Given :
A.)
Vehicle speeds on highway (9 vehicles) 74, 82, 67, 73, 65, 41, 74, 49, 85
Ordered data :
41, 49, 65, 67, 73, 74, 74, 82, 85
Sample size, n = 9
Median = 1/2 * (n +1) th term
Median = 1/2 * 10 = 5th term
Median value = 73
Midrange = (Maximum + minimum) / 2
Midrange = (85 + 41) / 2 = 126 / 2 = 63
Geometric mean : √(x1*x2*.. xn)^1/n
Geometric Mean:
(41*49*65*67*73*74*74*82*85)^1/n
= 66.19
B.)
Sodium grams in canned soup (8 varieties)
X = 4.22, 3.60, 2.68, 2.75, 2.70, 4.17, 2.72, 4.29
Ordered data:
2.68, 2.70, 2.72, 2.75, 3.60, 4.17, 4.22, 4.29
Sample size, n = 8
Median = 1/2 * (n +1) th term
Median = 1/2 * 9 = 4.5th term
Median value = (2.75+ 3.6) / 2 = 3.175
Midrange = (Maximum + minimum) / 2
Midrange = (4.29 + 2.68) / 2 = 3.485
Geometric mean : √(x1*x2*.. xn)^1/n
Geometric Mean:
(2.68*2.70*2.72*2.75*3.60*4.17*4.22*4.29)^1/8
= 3.32
C.)
Campus health center visits (12 students)
X : 1, 5, 6, 13, 2, 3, 1, 3, 3, 1, 4, 3
Ordered data :
1, 1, 1, 2, 3, 3, 3, 3, 4, 5, 6, 13
Sample size, n = 12
Median = 1/2 * (n +1) th term
Median = 1/2 * 13 = 6.5th term
Median value = 3
Midrange = (Maximum + minimum) / 2
Midrange = (1 + 13) / 2 = 7
Geometric mean : √(x1*x2*.. xn)^1/n
Geometric Mean:
(1*1*1*2* 3*3*3*3*4* 5*6*13)^1/12
= 2.82
the object is a circle with a pentagon inside of it each of the sides of the pentagon is a chord of the circle
Answers
Answer:
The answer to ur question should be, A Object A
Answer:
a
Step-by-step explanation:
Find the area of the shape shown below...
Please help-
Answers
Answer:
[tex]A=32~sq~units[/tex]------------------
[tex]A=A_1+A_2+A_3+A_4[/tex][tex]A=1/2(4)(10)+1/2(2)(2)+(2)(2)+1/2(2)(6)[/tex][tex]A=20+2+4+6[/tex][tex]A=32[/tex]-------------------------
hope it helps...
have a great day!!
Can someone answer this?
Answers
Answer:
Step-by-step explanation:
6x-1+3x+5x+3+4x+8+5x+5=360 degree(sum of exterior angle of a pentagon is 360 degree)
23x+15=360
23x=360-15
x=345/23
x=15
therefore the value of x is 15 degree.
What does growth mean in math
Answers
Tuan is an artist. He is painting on a large canvas which is 40 inches wide. The height of the canvas is 6 inches less than the width. What is the area of Tuan's canvas?
Answers
Answer:
1360 inches.
Step-by-step explanation:
Equation: 40 × (40-6) Since 40 inches is the width :)
40-6= 34
34*40=1360
Taun's canvas is 1360 inches :)
Please help and hurry!
Answers
Answer:
25.13
C=2πr
C=2(3.14)4
llll answer this an i will mark u brainliest
Answers
Answer: yeah the other person is right
Step-by-step explanation:
GIVING OUT BRAINLIEST ANSWER PLSS HELP!
Answers
Answer:
It should be c
Step-by-step explanation:
Answer:
A
Step-by-step explanation:
The answer is A
Very few circles are congruent. Certainly if a circle has a radius of 8 and another one 2 city blocks away also has a radius of 8, both are congruent. But if one of them has a radius of 4 and the other a radius of 10, they are not congruent.
A does not have to be true.
56+ ? +11=94
Help me
Answers
Answer:
? = 27
Step-by-step explanation:
56 + ? + 11 = 94
? + 67 = 94
? = 27
How
many solutions exist for the mixed-degree system graphed below?
Answers
Answer:
There is one solution
(2, 2)
Step-by-step explanation:
The solutions are where the line and curve intersect.
The isone point of intersection and therefor one solution (2, 2)
Answer:
answer is b.) one
Step-by-step explanation:
edge 2021