Answer:
The mean lifetime of a sample of 100 fluorescent light bulbs produced by a company is
The mean lifetime of a sample of 100 fluorescent light bulbs produced by a company is computed to be 1570 hours with a standard deviation of 120 hours.
Step-by-step explanation:
https://www.cs.bu.edu/faculty/snyder/cs237/Handouts%20and%20Web%20Documents/Handouts/PracticeProblemsHypothesisTesting.pdf
Have a bless day
NEED HELP PLEASE I need number 3 and 4 please if anybody can help
Answer:
top bar on 3. 120 dollars for strawberry milk per month
bottom bar on 3. 100 dollars chocolate milk per month
#4. bars help an individual know information visually and may help an individual understand better.
A. Your friend says that the solutions to the inequality 9x-18x ≥ - 18 are x ≥ 2 Solve the inequality correctly. B. What error did your friend make?
Answer:
A. x≤2; B. wrong unequality after dividing by negative number.
Step-by-step explanation:
9x-18x≥ -18;
-9x≥ -18;
0≥ -18+9x;
18≥9x;
9x≤18;
x≤2.
What are the missing factors in the factor tree for 45?
45
5
A
B
С
Answer:
c
Step-by-step explanation:
the missing factors in the factor tree
If 4/5 of the population of a certain town is
considered to be middle class and the population
of the town is 2,000, how many people are
considered middle class?
Hi! I'm happy to help!
Our town is composed of 2,000 people. Of those 2,000 people, 4/5 of them are middle class. The word 'of' usually means multiplication when it is in a word problem. So, we will multiply 2,000 by 4/5. When multiplying a whole number, we just multiply it by the numerator (top) and leave the denominator. (bottom)
2,000×4
8,000
8,000/5
Fractions are just a different way of putting division, so we can change this to a division problem:
8,000÷5=
1,600
1,600 of the people are middle class.
I hope this was helpful, keep learning! :D
If the side length of a square is 7.2 inches, what is the area of the square
Answer:
51,84
Step-by-step explanation:
The area of the square if side * side, so 7.2 * 7.2 = 51,84 square inches
The length of a rectangle is twice its width.
If the perimeter of the rectangle is 54 yd, find its length and width.
Answer:
Length 18 yds, Width 9 yds
Step-by-step explanation:
2x + 2x + x + x = 54
Combine like terms
6x = 54
Divide both sides by 6
x = 9
Plug 9 into equation above
2(9) + 2(9) + 9 + 9 =
18 + 18 + 18 = 54
If each cube in the rectangular prism measures 1 cubic centimeter, what is the volume of the prism?
A. 7 cubic cm
B. 12 cubic cm
C. 16 cubic cm
D. 8 cubic cm
Answer:the answer is 12 since there is 6 on top then the bottom layer must be the same
Step-by-step explanation:
What is the answer and I will need it now
Answer:
C. is your answer. 3/4. think of it like money. 1/4 is 25. 1/2 is 50. 3/4 is 75. and 1 is 1 whole
Answer:
D
Step-by-step explanation:
The graph is counting by 1/4, so in between 3/4 and 1, it would be 7/8, because 5/8 is less than 3/4, which the marker in front of point P.
The expression two pi parentheses RH plus R to the power of two parentheses represents the total surface area of a cylinder with height H in radius R what is the surface area of the cylinder with a height of 6 cm and a radius 2 cm
Answer:
100.6cm2
Step-by-step explanation:
The mathematical expression wil become
[tex]2\pi(rh + {r}^{2} )[/tex]
The TSA of a cylinder is
[tex]2\pi \: rh + \pi {r}^{2} + \pi {r}^{2} [/tex]
When simplified, we have
[tex]2\pi \: rh + 2\pi {r}^{2} = 2\pi(rh + {r}^{2} )[/tex]
So indirectly, the expression is the same as total surface area of a cylinder.
So all you have to do is substitute the height and radius into any of the formulas .
[tex]2 \times \frac{22}{7} ( (2 \times 6) + {2}^{2} )[/tex]
[tex]2 \times \frac{22}{7} (12 + 4) \\ 2 \times \frac{22}{7} \times 16 \\ \frac{22 \times 2 \times 16}{7} \\ \frac{22 \times 32}{7} \\ \frac{704}{7} = 100.57 {cm}^{2} \\ = 100.6 {cm}^{2} [/tex]
The triangle shown below has an area of 20 units.
Find the missing side.
8.
2
2
units
One of the legs of a right triangle measures 1 cm and the other leg measures 17 cm.
Find the measure of the hypotenuse. If necessary, round to the nearest tenth.
Answer:
using phythagoras formula of right angles we can calculate the hypotenuse
1^2=x^2+17^2
x^2=17^2-1^2(transpose)
×^2=288 (introduce a square root)
x=15.01(round of to the nearest tenth)
Step-by-step explanation:
x=10
The measure of the hypotenuse is 17.029
What is Pythagoras Theorem?If ABC is a triangle with AC as the hypotenuse and angle B with 90 degrees then we have Pythagoras theorem:
|AC|^2 = |AB|^2 + |BC|^2
where |AB| = length of line segment AB. (AB and BC are rest of the two sides of that triangle ABC, AC being the hypotenuse).
Given;
The legs of a right triangle measures 1 cm
The other leg measures 17 cm
Now,
|AC|^2 = |AB|^2 + |BC|^2
|AC|^2 = |1|^2 + |17|^2
|AC|^2 = 1 + 289
AC=17.029
Therefore, by pythagoras theorem answer will be 17.029.
Learn more about Pythagoras theorem here:
https://brainly.com/question/12105522
#SPJ2
on one of the snowiest days in the history of buffalo new york, nearly 5 feet of snow fell in a 24-hour period. if during this time snow fell at a consistent rate, which of the following graphs best represents the snowfall in this 24-hour period?
AnswerC
Step-by-step explanation: The reason is because if you look at the four graph you gotta make sure the Y=5 and only C has that
Help please I don’t understand tell me we’re to plot
Answer:
put one dot on (-3,3) then put another on (-2,2) and lastly put another one on (-2,4). Hope this helped!
Identify the relationship between the angles. *
A. Alternating Exterior
B. Supplementary
C. Alternating Interior
D. Vertical
What is 7.5 divided by 3
Answer:
2.5
Step-by-step explanation:
[tex]7.5 \div 3[/tex]
[tex] = 2.5[/tex]
Answer: 2.5
You're welcome..
Pls help it's due today It's DUE IN 8 MINUTES.
Answer:
84 pounds
Step-by-step explanation:
Is 5 5/6 + 1 3/4=5 1/12 reasonable
Answer:
No, it is unreasonable.
Step-by-step explanation:
5/5/6+1/3/4=35/6+7/4
=70/12+21/12
=91/12
=7 7/12
The size of a rectangular computer monitor is determined by the length of its diagona
a computer monitor has a length of 24 inches and a height of 18 inches, what is the
length of its diagonal to the nearest inch?
42 inches
15 inches
30 inches
21 inches
Answer:
30 inches.
Step-by-step explanation:
Using Pythagoras:
d^2 = 18^2 + 24^2 = 900
d = sqrt 900 = 30.
Please help ASAP:
A contractor records the areas, in square feet, of several houses in a neighborhood to determine data about the neighborhood. Which formula should be used to calculate the standard deviation?
Step-by-step explanation:
option B is correct answer
Answer:
Part 1 is B and Part 2 is A
Step-by-step explanation:
Edg 2021
How would this triangle be classified ..
Answer:
This given triangle is an equilateral triangle.
Devon writes a number pattern.he starts with 3 and follows the rill "multiply by 2"which numbers could be in devons pattern
Answer:B 24 & 96
Step-by-step explanation:
what is answer to 5/6 x 2/3 x 8/5 =
Answer:
8/9
Step-by-step explanation:
5/6 x 2/3 = 10/18 (5/9 reduced)
5/9 x 8/5 = 40/45 ( 8/9 reduced)
7b,for b=5 give me n suer for that
Answer:
35
Step-by-step explanation:
7b
7(5)
35
[tex]\huge\text{Hey there!}[/tex]
[tex]\huge\boxed{\frak{7b}}}\\\huge\boxed{\rightarrow{\frak{7(5)}}}\\\huge\boxed{\rightarrow\frak{35}}}\\\huge\boxed{\frak{Answer: 35}}\huge\checkmark[/tex]
[tex]\huge\text{Good luck on your assignment \& enjoy your day!}[/tex]
~[tex]\huge\boxed{\frak{Amphitrite1040:)}}[/tex]
5.) Your printer takes 36 seconds to print a small photo and 60 seconds to print a large one.
a.) Write an expression for the time (in seconds) your printer would take to print a batch
including both small and large photos.
Answer:
[tex]36s+60l[/tex]
Step-by-step explanation:
Let [tex]s[/tex] be the amount of small photos your printer needs to print.
Let [tex]l[/tex] be the amount of large photos your printer needs to print.
Since it takes 36s to print a small photo and 60s to print a large photo, we can form the expression: [tex]36s+60l[/tex]
Supón que fabricas anillos para servilletas
taladrando agujeros de radio r = 2.5 cm a
través del centro de una esfera de madera de
radio R=4 cm. ¿Cuál es la cantidad de ma
dera que sale de la perforación, si los anillos
quedan con una altura de 6 cm?
Se debe remover aproximadamente 140.848 centímetros cúbicos de madera para reducir las esferas a anillos con altura de 6 centímetros.
En esta cuestión se precisa calcular el volumen de la esfera y sustraer los volúmenes de dos casquetes esféricos de igual cantidad [1] y un cilindro recto respectivo a la operación de taladrado. [2] La cantidad de madera a remover queda definida por la siguiente expresión:
[tex]V = \frac{2\pi}{3}\cdot h^{2}\cdot (3\cdot R - h) + \pi\cdot r^{2}\cdot (2\cdot R-2\cdot h)[/tex] (1)
Donde:
[tex]V[/tex] - Volumen removido de madera, en centímetros cúbicos.[tex]h[/tex] - Altura del casquete esférico, en centímetros.[tex]R[/tex] - Radio de la esfera, en centímetros. [tex]r[/tex] - Radio del agujero, en centímetros.Si sabemos que [tex]h = 1\,cm[/tex], [tex]R = 4\,cm[/tex] y [tex]r = 2.5\,cm[/tex], entonces la cantidad de madera a remover es:
[tex]V = \frac{2\pi}{3}\cdot (1\,cm)^{2}\cdot [3\cdot (4 \,cm) - 1\,cm] +\pi\cdot (2.5\,cm)^{2}\cdot [2\cdot (4\,cm)-2\cdot (1\,cm)][/tex]
[tex]V \approx 140.848\,cm^{3}[/tex]
Se debe remover aproximadamente 140.848 centímetros cúbicos de madera para reducir las esferas a anillos con altura de 6 centímetros.
Invitamos cordialmente a consultar esta pregunta sobre volúmenes: https://brainly.com/question/16127188
jim invested his savings in two investment funds. the amount he invested in fund A was $3000 less than the amount he invested in fund B. Fund A returned a 8% profit and Fund B returned a 7% profit. How much did he invest in Fund B, if the total profit from the two funds together was $960?
Answer:
$8000
Step-by-step explanation:
Let it be that investment in A is x dollars, then Jim invested in B x+3000.
x/100*8=0.08x- the profit from A, (x+3000)/100*7= 0.07x+210
0.08x+0.07x+210=960
0.15x=750
x=750/0.15= 5000
5000+3000=8000dollars- investment in B
The required amount invested in Fund A is $5000, and in Fund B is $8000.
What are simultaneous linear equations?Simultaneous linear equations are two- or three-variable linear equations that can be solved together to arrive at a common solution.
Here,
Let the amount invested in fund A be x, and the amount invested in fund b be y.
x = y - 3000 - - - - - - - - - - -(1)
0.08x + 0.07y = 960 - - - - - - - - (2)
From the equation, 1
[y - 3000]0.08 + 0.07y = 960
y = $8000
Now,
x = 8000 - 3000
x = 5000
Thus, the required amount invested in Fund A is $5000, and in Fund B is $8000.
Learn more about simultaneous equations here:
https://brainly.com/question/16763389
#SPJ2
solve 12+20 using distributive property and the gcf
Answer:
4(3+5). the sum in the parenthesis is 8 and the gcf is four. 4*8=32
Step-by-step explanation:
Plz help 57.3 - 4.32 =
Answer:
52.98
Step-by-step explanation:
Solve y = -x2 + 5 when x = -2
Please mark Brainliest.
y=-(-2)^2+5
y=-2^2+5
2^2 means 2 squared.
-(-2)^2=-4
y=-4+5
y=1
I hope this helps!
Step explanation:
To solve this, you have to plug in the value of x (-2) and solve:)
My advice:
Have a marvellous day!
Can someone please help me please?
9514 1404 393
Answer:
D. G(x) = (x+3)² -2
Step-by-step explanation:
G(x) is translated left 3 and down 2 from F(x). The transformation ...
G(x) = F(x -h) +k
is a translation right h units and up k units. We have h=-3 and k=-2, so the function of interest is ...
G(x) = F(x +3) -2
G(x) = (x +3)² -2
