Answer:
I found the answer on this website. It seems correct! Link Below!
Step-by-step explanation
fractions.com/shirynsanswers/odben
Answer:
1/2
Step-by-step explanation:
The amount of time a certain brand of light bulb lasts is normally distributed with a mean of 1800 hours and a standard deviation of 25 hours. Using the empirical rule, what percentage of light bulbs last between 1725 hours and 1875 hours?
Answer:
99.7%
Step-by-step explanation:
The empirical rule formula states that:
68% of data falls within 1 standard deviation from the mean - that means between μ - σ and μ + σ .
95% of data falls within 2 standard deviations from the mean - between μ – 2σ and μ + 2σ .
99.7% of data falls within 3 standard deviations from the mean - between μ - 3σ and μ + 3σ
Step 1
We have to find the number of standard deviations from the mean
μ = Mean = 1800 hours
σ = Standard deviation = 25 hours
For 1725 hours
μ - xσ =
1800 - 25x = 1725
25x = 1800 - 1725
25x = 75
x = 75/25
x = 3
For 1875 hours
1800 + 25x = 1875
25x = 1875 - 180
25x = 75
x = 75/25
x = 3
Step 2
From the above calculation, the bum of standard deviations from the mean is 3
Hence, the percentage of light bulbs last between 1725 hours and 1875 hours is 99.7%
A student is given a true/false test with 10 questions on it. They did not study and choose to guess on all 10 problems. What is the probability that the student will get all 10 problems right?
Answer:
Its a 50/50 chance
Step-by-step explanation:
I got it right
Answer:
1/10
Step-by-step explan
el estudiante y 10 por las preguntaa 1/10 de prov
Select the correct answer.
Which function is represented by this graph?
A.
f(x) = |x + 7| − 3
B.
f(x) = |x − 7| − 3
C.
f(x) = |x + 3| − 7
D.
f(x) = |x − 3| − 7
Answer:
The answer is B
Step-by-step explanation:
The function is represented by the given graph is f(x)=|x-7|-3. Therefore, option B is the correct answer.
What is a absolute value equation?To solve an equation containing absolute value, isolate the absolute value on one side of the equation. Then set its contents equal to both the positive and negative value of the number on the other side of the equation and solve both equations.
From the given graph, the vertex is (7, -3).
x-intercept(s): (10,0),(4,0)
y-intercept(s): (0,4)
We know that, general form of the absolute equation is f(x)=a|x-h|+k.
Here, equation is f(x)=|x-7|-3
Therefore, option B is the correct answer.
To learn more about a absolute value equation visit:
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Suppose vanilla beans cost $600 per kilogram. Julie bought 9 grams of vanilla beans. Jacques bought 70 grams of vanilla beans.
How much more did Jacques pay for his vanilla beans?
Answer:
The Correct option is 36.60
Step-by-step explanation:
The key to solving this question lies around measurement conversion,specifically converting grams into its equivalence in kilograms.
1000 grams equal one kilogram
9 grams=9/1000 kg
9 grams=0.009 kg
70 grams=70/1000 kg
70 grams=0.07 kg
Julie pays=$600*0.009=$5.4
Jacques pays=$600*0.07=$42
Jacques pays $36.60 more ($42-$5.4) than Julie paid
Option is wrong because that was what Julie paid
Option D is wrong because that was what Jacques paid
Option B is obviously wrong
find the volume of this cylinder
Answer:
25² · 40 π in.³
Step-by-step explanation:
V = πr²h
π · 25² · 40
≈ 78539.81634
Since your question wants it in a different way, you have to know the formula.
V = πr²h
V = r² · h π in³
v = 25² · 40 π in³
Use trigonometry to determine the m>DEC to the nearest degree
Answer:
m∠DEC = 50° to the nearest degree
Step-by-step explanation:
cos D = adjacent side/hypotenuse
= 36/56
m∠DEC = arccos (36/56) =50° to the nearest degree
Select the correct answer.
Which sentence correctly compares temperatures?
Answer: C
Step-by-step explanation:
C is the only statement that is correct
it's all based on negative numbers :)
evaluate the following expression for x=-2 -4x+8+2x+3
Answer:
15
Step-by-step explanation:
x = 2
-4x+8+2x+3 = ?
-4 (-2) + 8 + 2 (-2) + 3 =
= 8 + 8 - 4 + 3
= 16 - 4 + 3
= 12 + 3
= 15
hopefully this helped you :)
Find the area of the semicircle. Round your answer to the nearest hundredth.
18 in.
The area is about inches.
Answer:
127.24in
Step-by-step explanation:
254.47/2=127.235. round it and 127.24
Math/Geometry
HELP ASAP PLS GEOMETRY
Answer:ANSWER IS CBD by ?
Step-by-step explanation:
ok so ABC is equal to 180 degreess so /_\ would a right angle which is 90
If the area of a square is 121 cm^2, what is its side length?
I
Step-by-step explanation:
Area of a square=121 cm^2
l^2=121 cm^2
l=√121cm^2
l=11 cm
The radius of the pizza is 15 cm long.
What is the circumference of the pizza?
Express your answer in terms of pi
Answer:
30π cm
30pi cm
Step-by-step explanation:
c = 2πr
c = 2π(15)
c = 30π
Help!!!! I need the answer to this
Answer:
1. 147°
3. 147°
4. 33°
Step-by-step explanation:
hope this helps!
You go to the doctor and he gives you 14 milligrams of radioactive dye. After 16 minutes, 5.25 milligrams of dye remain in your system. To leave the doctor's office, you must pass through a radiation detector without sounding the alarm. If the detector will sound the alarm if more than 2 milligrams of the dye are in your system, how long will your visit to the doctor take, assuming you were given the dye as soon as you arrived
Answer:
31.7 min
Step-by-step explanation:
Given that;
N(t) = Noe^kt
No = amount of radioactive isotope initially present
N(t) = amount of radioactive isotope present at time t
t = time taken
k = decay constant
5.25 = 14e^-k16
5.25/14 = e^-k16
0.375 = e^=k16
ln(0.375) = =-16k
k = ln(0.375)/-16
k = 0.0613 min^-1
So time taken for 2 mg to remain;
2 = 14e^-0.0613t
2/14 = e^-0.0613t
0.1429 = e^-0.0613t
ln(0.1429) = -0.0613t
t = ln(0.1429)/-0.0613
t = 31.7 min
f(x) = -2x + 7
Consider the function below. Find f(5)
Answer:
-3
Step-by-step explanation:
You replace the x in the equation for 5 so the problem to work it out would be f(x)=-2(5)+7
then you just solve the equation normally
Answer:
-3Step-by-step explanation:
f(x)=-2x+7
f(5)=-2×5+7
=-10+7
=-3
find the nth term:5, -1, -7, -13
Answer: a
5
=
−
19
HOPE THIS HELPS GOOD LUCK
George takes a photograph of a rectangular window that is 312 feet tall and 134 feet wide. He prints the photograph on paper so that the image of the window is 12 foot tall and 14 foot wide. What is the ratio of the area of window to the area of the image of the window?
Answer:
A':A = 1742:7
Step-by-step explanation:
Applying,
A' = L'W'............... Equation 1
Where A' = Area of the window, L' = Length of the window, W' = Width of the window.
From the question,
Given: L' = 312 ft, W' = 134 ft
A' = (312×134)
A' = 41808 ft²
Similarly,
A = LW.................. Equation 2
Where A = Area of the image of the window, L and W is thw length and width of the image of the window
Given: L = 12 ft, W = 14 ft
Therefore,
A = 12×14
A = 168 ft²
Therefore the ratio of A' to A = 41808:168 = 1742:7
A':A = 1742:7
pls help..
FAST!!!!!!!
Step-by-step explanation:
1/4+5/4 = 6/4
6/4^2 = 6/4*6/4 = 36/16 = 18/8 = 9/4
9/4 + 3/4 = 12/4 = 3
Answer:
= 3
Step-by-step explanation:
(1/4 + 5/4) ^2 + 3/4 = ? --> add 1/4 and 5/4
(6/4) ^2 + 3/4 = ? --> do (6/4) ^2
2.25 + 3/4 = ?
? = 3
what's 2e-3c if e=5 and c=3
Answer:
1
Step-by-step explanation:
2e-3c
=10-9
=1
2x5 - 3x3
10-6=4
replace the letter with the numbers
Terry rents a kayak while he is on vacation. He is required to pay a deposit of $95 plus an additional $11.50 per day. Terry only has $150 to spend on kayaking. Write and solve an inequality you can use to determine the maximum number of days Terry can afford to rent a kayak.
Answer:
A maximum of 4 days
Step-by-step explanation:
Inequality: 95 + 11.50x ≤ 150
Okay so the 95 is his fee. Then for everyday, it's 11.50 and we don't know how many days yet, so 11.50x. The 95 dollars and the 11.50x has to equal to or less than 150 since that is how much he has to spend on vaca.
95 + 11.50x ≤ 150
-95 -95
11.50x ≤ 55
/11.50 /11.50
X=4.78260869565
You would round down since he has a budget.
Hiii dont mind the answer that i put but im not sure if im right, can someone please help me?
Answer:
Option 4
Step-by-step explanation:
The volume of a cylinder is going to be the area of the base (which is a circle) times the height. if you have cylindrical mug, then you can use the base area×height relationship, but it won't be exact because some of the volume is going to be used for the walls of the mug itself.
Anyways:
Volume = Base Area × Height
•Base Area -> Circle = π×radius²
•Height is given as 7in.
Volume = π×(6.2in)² × 7in = 845.33975...
Volume is in units cubed (the 3rd power) which is where the in³ is from. Your closest option here looks to be the 4th choice.
The first three terms of a sequence are given. Round to the nearest
thousandth (if necessary).
309, 303, 297, ...
Find the 33rd term.
Answer:
117
u welcome
Step-by-step explanation:
Please answer this math question for me
Answer:
Hello! answer: b = 135 and c = 45
This will ultimately add up to 360 so 45 + 45 + 135 + 135 = 360 Hope that helps!
Women make up 52 percent of the voting-age population and are more likely to vote, yet a. a woman has never been elected to the U.S. Senate. b. men dominate the political arena. c. women dominate the political arena. d. a woman has never been elected governor of a U.S. state. Please select the best answer from the choices provided A B C D
Answer:
b. "men dominate the political arena".
Step-by-step explanation:
Edgeńuity says - B. "men dominate the political arena".
I got a 100% on the test
The endpoints of a diameter of a circle are ( 3 , 9 ) and ( 3 , - 3 ). Find the equation of the circle.
Answer:
Step-by-step explanation:
distance between ( 3 , 9 ) and ( 3 , - 3 ) = 9 - (-3) = 12 because x is the same for both pts
12 is the diameter of circle so its radius = 12/2 = 6
center is in the middle: ( 3 , (9-3)/2 ) = ( 3, 3 )
so the circle's eqn is
( x - 3 )^2 + ( y - 3 )^2 = 6^2
If the Benton Widget Co. can produce 2,500 widgets in 5
hours, how many can they produce in half an hour?
Answer:
250
Step-by-step explanation:
They make 2,500 in 5 hours
2500/5 = 500
They 500 in 1 hour
500/2 = 250
250 in 30 mins
Shinji started with angle ∠ABC and constructed ray BE
Answer:
A and C
Step-by-step explanation:
Statements B) BA ≅ BC and C) AE ≅ DE guarantee that ray BE bisects angle ABC.
Statement B states that BA is congruent to BC. This means that side AB is the same length as side BC. Since the bisector of an angle divides the opposite side into two segments with equal lengths, this guarantees that ray BE bisects angle ABC.
Statement C states that AE is congruent to DE. This means that the segments AE and DE have the same length. Since the bisector of an angle divides the opposite side into two segments with equal lengths, this guarantees that ray BE bisects angle ABC.
The other statements are not sufficient to guarantee that ray BE bisects angle ABC. For example, if BA is congruent to BD, this does not mean that the segments AE and DE have the same length. Similarly, if BD is congruent to DE, this does not mean that side AB is the same length as side BC.
Therefore, the correct answers are B and C.
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Rectangle ABCD, A, B, C, D is graphed in the coordinate plane. The following are the vertices of the rectangle: A(5, 5), B(7,5), C(7,-1) and D(5,-1). Given these coordinates, what is the length of side BC of this rectangle?
Answer:
I think the answer is 5
BC=5
Step-by-step explanation:
Which of the following could be the shape of a person base elect all that apply
1. Triangle
2. Hexagon
3. Circle
4. Pentagon
5 square
Which of the following objects is made up of two circular bases and a lateral surface
A. Cylinder
B. Triangular Pyramid
C. Cone
D. Sphere
[tex]circle cylinder}[/tex]
here is ur answer dearAnswer:
the answer is cylinder i think
Step-by-step explanation:
can someone help me!??
Answer:
A: Negative
B: 1) Decreases
2) Increases toward 100
C: The point (1,55) and (5,97) are outliers.
Step-by-step explanation:
Because the grade decreases as the number of abscenses increases, it is called a negative association.
Outliers are the point that stick far out from the rest of the points. Both (1,55) and (5,97) are far away from the rest of the points. And don't follow the general trend of the graph.