Answer:
−0.2226 ; 1.0226
Step-by-step explanation:
Given :
n1 = 10 ; n2 = 8 ; s1 = 0.5 ; s2 = 0.7 ; x1 = 3.1 ; x2 = 2.7
Confidence interval, two - sample, t procedure ;
μ1 - μ2 = (x1 - x2) ± Tcritical*S
S = sqrt[(s1²/n1) + (s2²/n2)]
S = sqrt[(0.5^2/10) + (0.7^2/8)]
S = sqrt[0.08625]
S = 0.2937
Tcritical at 95% confidence interval
df = 10+8 - 2= 16
Tcritical = 2.12
(3.1 - 2.7) ± 2.12*(0.2937)
0.4 ± 0.6226
(0.4 - 0.6226) ; (0.4 + 0.6226)
−0.2226 ; 1.0226
What are the zero(s) of the following function: f(x)= -8X - 4?
Answer this ASAP the last question that due 5 minutes
Answer:
C
Step-by-step explanation:
If you graph the points, count boxes from the orgin (0,0).
You will have to go 3 to the right (on x), and up 6 (on y).
Plz help quickly kinda don’t understand it a bit
Answer:
Step-by-step explanation:
[tex]\text{The area of a circle is}\\ \\ A=\pi r^2\\ \\ \pi \approx 3.14,\ r=3ft\\ \\ A=3.14(3^2)\\ \\ A=3.14(9)\\ \\ A\approx 28.3ft^2[/tex]
I GIVE BRAINLIEST FOR EXPLANATION AND CORRECT ANSWER EXTRA POINTS
Answer:x=4.2643
Step-by-step explanation:
tan35degrees=x/9
9(tan35degrees)=x
4.2643=x
Answer:
Answer:x=4.2643
Step-by-step explanation
1/4 1.5230×10−5 – 2.3645×10−5 –
1/8 8.8284×10−7 4.11 7.4676×10−7 4.98
1/16 6.2147×10−8 3.83 6.1723×10−8 3.60
1/4 1.4831×10−7 – 4.0071×10−7 –
1/8 1.7259×10−8 3.10 2.8021×10−8 3.84
1/16 9.7124×10−10 4.15 1.6602×10−9 4.08
1/32 6.4505×10−11 3.91 1.0675×10−10 3.96
1/64 4.8334×10−12 3.74 8.1590×10−12 3.71
plsss help meee in math :(((
Answer:
a = 30
2a = 60
3a = 90
Step-by-step explanation:
3a + 2a + a = 180 ( Sum of angles of a triangle is 180)
6a = 180
a = 180/6
a = 30
2a = 2 x 30 =60
3a = 3 x 30 = 90
A storage box in the garage is 3 feet tall, 4 feet long and has a volume of 9 cubic feet. How many square feet is the area of the base of the box?
Answer:
3 ft^2
Step-by-step explanation:
first find the width of the storage box using the given volume
V = L * W * H
9 = 4 * W * 3
9 = 12 * W
9/12 = W
W = 3/4 or .75
then with that to find the are of the base multiply the length and the width
a = l * w
a = 4 * 3/4
a = 3
Triangle Theorems, Help!!!
Answer:
x = 8
Step-by-step explanation:
(6x + 7)° + 45° = (13x - 4)° => exterior angle theorem of a triangle
6x + 7 + 45 = 13x - 4
6x + 52 = 13x - 4
Collect like terms
6x - 13x = -52 - 4
-7x = -56
Divide both sides by -7
x = -56/-7
x = 8
how to do this plz help
Answer:
13. 8
14.3
15.5
17.3
18.4
19.10
How many grams of a radioactive kind of neodymium will be left after 33 days if the half-life is 11 days and you start with
160 grams?
Answer:
20 grams will be left.
Step-by-step explanation:
Half-life is 11 days
This means that in each 11 days, you lose 50% of the amount.
33 days
33/11 = 3 half-lifes.
You start with 160 grams
After 11 days: 160/2 = 80 grams
After 22 days: 80/2 = 40 grams
After 33 days: 40/2 = 20 grams.
20 grams will be left.
Answer:10
Step-by-step explanation:
So I have a grade of 100.6 (an A+) and I had this assignment that was due a while ago (that was 15 points) and now I’m not allowed to turn it in. What would be my grade now that I didn’t do that assignment?
Answer:
maybe an 80 or 90
Step-by-step explanation:
Suppose f is a linear function such that f(4)= 8 and f(9)= 1. Find the equation for f.
Find the volume of the cone that sits on top of the cylinder
Answer:
Vc = (π/3)✓17 ≈ 4.12 ft³
Step-by-step explanation:
h = ✓(4²+1²)
h = ✓17
V = πr²h/3
V = π(1)²✓17/3
V = (π/3)✓17 ≈ 4.12
Homework
Answers are given at the end of
the chapter
Q1 Change 0.035 g to milligrams.
Answer:
the answer 0.035 g = 35 milligrams
Answer:
Step-by-step explanation:
35miligram in 0.035g
The relationship between income (I), in dollars, and the time (h), in hours, for 2 different jobs is represented. Compare the hourly rates of Job A and Job B.
Which job offers a higher rate per hour and by how much?
A. Job A pays $5.25 more per hour than Job B.
B. Job A pays $4.75 more per hour than Job B.
C. Job B pays $5.25 more per hour than Job A.
D. Job B pays $4.75 more per hour than Job A.
Answer the answer is d
y = x2+6x+8 and y = (x+2)(x+4) both define the same quadratic function. Without graphing, identify the x- and y-intercepts of the graph.
Put each of the intercepts in the form of an ordered pair ( . ) ( . ).
You should have three ordered pairs in your answer. Two x-intercepts and one y-intercept.
Answer:
x-int:(-2,0)(-4,0) . y-int:(0,8)
Step-by-step explanation:
y = x2+6x+8 and y = (x+2)(x+4)
x-int:
x+2=0
x= -2
(-2,0)
x-int:
x+4=0
x=-4
(-4,0)
y-int: plug 0 for x
y=(0+2)(0+4)
y=8
(0,8)
The intercepts of a graph are the points where the graph crosses the x or y axes.
The x-intercepts are: (-2,0) and (-4,0)The y intercept is (0,8)Given that:
[tex]y = x^2 + 6x + 8[/tex]
[tex]y = (x + 2)(x + 4)[/tex]
The x-intercepts
This is when [tex]y = 0[/tex]
So, we have:
[tex]y = (x + 2)(x + 4)[/tex]
[tex](x + 2)(x + 4) = 0[/tex]
Split
[tex](x + 2) = 0[/tex] or [tex](x + 4) = 0[/tex]
Solve for x
[tex]x = -2[/tex] or [tex]x = -4[/tex]
Hence, the x-intercepts are: (-2,0) and (-4,0)
The y-intercepts
This is when [tex]x = 0[/tex]
So, we have:
[tex]y = x^2 + 6x + 8[/tex]
Substitute 0 for x
[tex]y = 0^2 + 6 \times 0 + 8[/tex]
[tex]y = 8[/tex]
Hence, the y intercept is (0,8)
Read more about intercepts at:
https://brainly.com/question/1354826
Need help with this problem ^^
Answer:
8t^2-2t+13 is the answer i believe
the top teams speed for each leg is 56.81, 59.22, 57.39 and 60.11. whats the best time
How do you write "Hello World" in an alert box?
i can't type it in here, so i wrote in a paper for you
I really need help on this!
hii! i just wanted to say hope you're having a fantastic day and hope that things are going well (: stay strong and stay safe!
In ΔOPQ, the measure of ∠Q=90°, OP = 7.7 feet, and PQ = 4.1 feet. Find the measure of ∠O to the nearest degree.
Answer:
32 degrees
Step-by-step explanation:
Answer:
32 degrees
Step-by-step explanation:
which equations represents the line that is perpendicular to y= 5x+4 and passes through the point (-5,2)
well the slope of line would be -1/5
equation of line = (y-2) =-1/5(x+5)
Find the area of the figure below.
Answer:
157.08 in2
Step-by-step explanation:
hope it helps
What is the slope of the line below? Be sure to scroll down first to see all
answer options.
(-14,3) (2,-5)
Answer:
Step-by-step explanation:
The slope of a line can be determined by any two points on the line and is defined as
m=(y2-y1)/(x2-x1),
We are given points (-14,3) and (2,-5) so
m=(-5-3)/(2-(-14))
m=(-8)/(16)
m= -1/2. (Answer F)
PLEASE HELP ME THANKS SO Much
9514 1404 393
Answer:
(b) x = 7, AB = 9, AC = 12
Step-by-step explanation:
ΔAEB ~ ΔCDB so corresponding sides are proportional.
AB/CB = AE/CD
(x+2)/(x -4) = 12/4
x +2 = 3(x -4) . . . . . . multiply by x-4
x +2 = 3x -12 . . . . . . eliminate parentheses
14 = 2x . . . . . . . . . . . add 12-x
7 = x . . . . . . . . . . . . . divide by 2
AB = x +2 = 7 +2 = 9
BC = x -4 = 7 -4 = 3
AC = AB +BC = 9 +3 = 12
__
In summary, ...
x = 7, AB = 9, AC = 12 . . . . . matches the 2nd choice
_____
Additional comment
Please note the other choices make no sense.
(a) AB = x +2 = -5 +2 = -3 ≠ -9
(c) AC = 2x-2 = 2(7) -2 = 12 ≠ 9
(d) segment lengths are never negative in a geometrical figure
4-3x>16
I don’t know
Answer:
x < -4
Step-by-step explanation:
4 > 16 + 3x
3x < 4-16
3x < -12
x < -12/3
x < -4
Feel free to mark it as brainliest
A school sold 51 less children’s tickets than adult tickets for the school play. Adult tickets cost $1.25 and children’s tickets cost $0.75. A total of $129.75 was taken in. How many of each kind were sold? Show work pls
Answer:
84 adult tickets and 33 child tickets were sold.
Step-by-step explanation:
Given that a school sold 51 less children's tickets than adult tickets for the school play, and adult tickets cost $ 1.25 and children's tickets cost $ 0.75, and a total of $ 129.75 was taken in, to determine how many of each kind were sold the following calculations must be done:
61 x 1.25 + 10 x 0.75 = 83.75
81 x 1.25 + 30 x 0.75 = 123.75
82 x 1.25 + 31 x 0.75 = 125.75
83 x 1.25 + 32 x 0.75 = 127.75
84 x 1.25 + 33 x 0.75 = 129.75
Thus, 84 adult tickets and 33 child tickets were sold.
Answer:
There were 80 adult tickets sold and 29 children tickets sold.
c + 51 = a
51 = a - c
c = a - 51
a*1.25 + c*0.75 = 129.75
a = 100 c = 49 a + c = 161.75
a = 80 c = 29 a + c = 121.75
Which of the following are compound events in which the results of one event affect the likelihood of the other event? PLZ HELP ASAP
Answers: 1. independent events
2. dependent events
3. theoretical events
4. fair events
Answer:
2. Dependent events
Step-by-step explanation:
find the volume of a plastic cube vuilding block with a side length of 12 centimeters
Step-by-step explanation:
Length of the plastic cube (L) = 12 cm
Volume of the cube
= L³
= ( 12)³
= 1728 cm³
Hope it will help :)❤
What values of the variables highlighted would create an equation infinitely many solutions
Shane can type 275 words in 5 minutes. Hillary can type 240 words in 4 minutes.
Who is the fastest at typing and what is their unit rate?
A
Shane can type 1,375 words per minute.
B
Shane can type 55 words per minute.
C
Hillary can type 960 words per minute.
D
Hillary can type 60 words per minute.
Answer:
The Answer Is D
Step-by-step explanation:
It kind of self explanatory .
Hillary is the fastest typer and D. Hillary can type 60 words per minute.
What is a unitary method?A unitary method is a mathematical way of obtaining the value of a single unit and then deriving any no. of given units by multiplying it with the single unit.
Given, Shane can type 275 words in 5 minutes.
So, Shane can type (275/5) = 55 words per minute.
Also given that Hillary can type 240 words in 4 minutes.
So, Hillary can type (240/4) = 60 words per minute.
Therefore, Hillary is the fastest typer.
learn more about the unitary method here :
https://brainly.com/question/28276953
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