Answer:
Option A: 3.59% is the correct answer
Step-by-step explanation:
Z-score is used to calculate the probabilities when mean and standard deviation is given.
Given
Mean = μ = 21
SD = σ = 5
We have to find the probability of selling 12 or less water heaters so our x value is 12
x = 12
The z-score of a value is calculated as:
z-score = (x-μ)/σ
Putting the values
[tex]z-score=\frac{12-21}{5} \\=\frac{-9}{5}\\=-1.8[/tex]
Now z-score table will be used to calculate the probability for z= -1.8
So we will go for the row with -1.8 and column 0, which gives us: 0.03593
As we have to calculate the probability in percentage
[tex]=0.03593*100\\= 3.593\%[/tex]
Hence,
Option A: 3.59% is the correct answer
PLEASE HELP ME OUT HEREEEEEEEE
Answer:
7/10
Step-by-step explanation:
4 1/5 - 3 1/2 = 7/10
which is an empty set?
Answer:
A
Step-by-step explanation:
Which letter has reflectional, rotational, and point symmetry?
O
P
Q
L
Brainliest if you get it right :)
Q: Which graph represents a proportional relationship?
I need this by today!
Answer:
option C
Step-by-step explanation:
I hope now it's helped
estimate the quotient
7÷1,611
estimated
Answer:
The answer is 230.14
Easy long division
Hi please do this answer and please show the (steps) on how you got it. ❤️
How to do this like what’s the steps to get the answer???
Answer:
480^12
Step-by-step explanation:
When you're multiplying exponents with the same base, the simplest way is to add the two exponents:
480^8 * 480^4 =
480^(8+4) =
480^12
Then solve, but your question doesn't ask for that.
Find the indicated angle measures. Then justify each answer.
m angle 1
Answer:
m<1 is 115°
This is said to be true by the alternate interior angles theorum which describes this situation
Step-by-step explanation:
Answer:
115
Step-by-step explanation:
alternate interior angles
Which is the correct ?
Answer:
it is the 1st one
Step-by-step explanation:
because you have to add up all three sides because you need 180 then subtract that answer from 180 and you will get your answer
number 6 solve for x
Answer:
c
Step-by-step explanation:
The time (in minutes) required to learn the procedure for performing a certain task is uniformly distributed on the interval from 32 minutes to 52 minutes. (a) What is the probability that it takes more than 46 minutes to learn the procedure?(b) What is average time reqiured to learn the procedure?
Answer:
a
[tex]P( X > 46) = 0.7 \ minute[/tex]
b
[tex]\mu = 42 \ minute[/tex]
Step-by-step explanation:
From the question we are told that
The procedure for performing a certain task is uniformly distributed on the interval from( a = 32 )minutes to (b= 52) minutes
Generally the cumulative distribution function for continuous uniform distribution is
[tex]F(x) = \left \{ {{0 \ \ \ \ \ for \ x \ x < a} \atop {\frac{x-a}{b-a} } \ \ for \ a \le x \ge b} \atop {1 \ \ \ \ \ \ \ for \ x > b }\right.[/tex]
Generally the probability that it takes more than 46 minutes to learn the procedure is mathematically represented as
[tex]P( X > 46) = F(46) = \frac{46 - 32}{52-32}[/tex]
=> [tex]P( X > 46) = 0.7 \ minute[/tex]
Generally the average time required to learn the procedure is mathematically represented as
[tex]\mu = \frac{a + b}{2}[/tex]
=> [tex]\mu = \frac{32 + 52}{2}[/tex]
=> [tex]\mu = 42 \ minute[/tex]
Express in slope form please
PLEASE SOMEONE GIVE ME ANSWERS
Answer:
i think its E
Step-by-step explanation:
Represent the following sentence as an algebraic expression, where "a number" is the letter x. 8 is added to a number
Answer:
x+8
Step-by-step explanation:
"a number" is x? And it is added to 8.
PLEASE HELPP!
What is the slope of y = -4
Answer:
The slope is 0
Step-by-step explanation:
y = mx + b
y = 0x - 4
You can also graph it
Since the graph would be straight, the slope is 0
The average speed of greyhound dogs is about 18.4 meters per second. A particular greyhound breeder claims that her dogs are faster than the average greyhound. In a sample of 35 of her dogs, they ran, on the average, 18.7 m/s. Assuming a population standard deviation of 1.5 m/s and a .05 significance level.
Required:
Does this sample data provide evidence that the breeder's claim is correct?
Answer:
The calculated value Z = 1.183 < 1.96 at 0.05 level of significance
Null hypothesis is accepted
A particular greyhound breeder claims that her dogs are faster than the average greyhound
Step-by-step explanation:
Step(i):-
Given the average speed of greyhound dogs is about 18.4 meters per second.
Size of the sample 'n' = 35
mean of the sample x⁻ = 18.7
Population standard deviation = 1.5m/s
level of significance (∝) = 0.05
Step(ii):-
Null hypothesis : H₀ : μ = 18.4
Alternative hypothesis H₁ : μ ≠ 18.4
Test statistic
[tex]Z = \frac{x^{-} - mean}{\frac{S.D}{\sqrt{n} } }[/tex]
[tex]Z = \frac{18.7-18.4}{\frac{1.5}{\sqrt{35} } }[/tex]
Z = 1.183
Conclusion:-
The calculated value Z = 1.183 < 1.96 at 0.05 level of significance
Null hypothesis is accepted
A particular greyhound breeder claims that her dogs are faster than the average greyhound
Helppppp work out the values
Answer:
Step-by-step explanation:
When x=-2; y = -16+12= -4. This means a=-4
When x=-1; y= -2+3 = 1. This means b= 1.
When x=2; y = 16 +12 = 28 . This means c= 28
When x=4; y= 128+48 = 176. This means d= 176
Solve for b.
-9b = 27
Answer:
b=-3
Step-by-step explanation:
-9b/-9=37/-9
b=-3
Answer:
3
Step-by-step explanation:
Please answer on how to do this thanks
Answer:
M<E = 62°
Step-by-step explanation:
Since (8x-34)° and (5x+2)° are alternate interior angles, it means they equal each other so...
(8x-34)°= (5x+2)°
if you drop the parenthesis, you get
8x-34= 5x+2
Then you just solve and simplify it
3x= 36 ----> x= 12
Now you know what x is, you would plug it in to either one and you get 62 as your answer meaning m<E is 62°
8(12)-34= 62 (since this angle and angle E are parallel, the angles are the same and that is why if you plug x into this equation, you can find out what the angle of E is)
5(12) +2= 62 ( and since this angle is across from angle E, it means the angles are the same... so that's why if you plugged in x which is 12 into this equation, you can also find E)
I don't know if this helped or not.. it's kind of confusing and hard to explain without being able to show you... sorry.
Please help UwU
would mean so much :´)
Answer:
the answer is J
Step-by-step explanation:
Answer:H
find the slope
The singularity of a galactic dying star creates a 4th dimensional outbreak. how would you deter the event horizon. if the expansion of the black hole is 1.0034ct per second.
current mass- 2.078 wid
mass of singularity- 00.01 wid
zero light emission, even horizon as of zero known to occur
please help me asap
Answer:
3. about 15
4. about 9
5. about 11
Step-by-step explanation:
Trust meh
A coin is tossed 5 times find the probability that none are head
Answer:
20%
Step-by-step explanation:
trust me
Select from the drop-down menus to correctly complete each statement.
Answer:
posistive i think welp hope this helps :D
Step-by-step explanation:
What should be done to both sides of the equation in order to solve n\4 = -12.4?
Multiply by -12.4
Divide by -12.4
Multiply by 4
Divide by 4
Answer:
You multiply both sides by 4
Step-by-step explanation:
You have the equation [tex]\frac{n}{4}=-12.4[/tex] ? I assume, remember to use the ' / ' (forward slash) to indicate division.Next we multiply 4 on both sides [tex]4*\frac{n}{4}=4*-12.4[/tex] Which gives us [tex]\frac{4n}{4} = - 49.6[/tex] Rewrite the left side as [tex]\frac{4}{4}*n=-49.6[/tex] Now 4 divided by 4 is 1, and 1 times n is n, so [tex]n=-49.6[/tex]That's why we multiply by 4. Hope this helps
Answer:
multiply by 4
Step-by-step explanation:
please I need help with this question asap.
the following rule describe the relationship between x and y.
Rule: To find y multiply x by 4 and then subtract 3.
complete the table for the given rule.
x. y.
1
2
3
select the graph that shows the relationship.
A or B
Answer:
The table is:
x y
1 1
2 5
3 9
The graph B shows the relationship y=4x-3
Step-by-step explanation:
We need to fill the table using the rule:
To find y multiply x by 4 and then subtract 3.
Writing rule in mathematical form:
y=4x-3
Now for completing the table we need to put x=1,2 and 3 and find values of y
[tex]For x=1//y=4x-3\\ y=4(1)-3\\ y=4-3\\ y=1\\[/tex]
[tex]For \ x=2\\y=4x-3\\ y=4(2)-3\\ y=8-3\\ y=5[/tex]
[tex]For \ x=3\\y=4x-3\\ y=4(3)-3\\ y=12-3\\ y=9[/tex]
So, the table is:
x y
1 1
2 5
3 9
The graph B shows the relationship y=4x-3
I WILL GIVE BRAINLIEST TO WHOMEVER ANWRS
Answer:
8000
Step-by-step explanation:
Answer:
994
Step-by-step explanation:
We have the expression:
[tex](8+t)^3-6[/tex]
And we want to evaluate it when t=2.
Hence, we will substitute 2 for t and evaluate. Therefore:
[tex]=(8+2)^3-6 \\\\ =(10)^3-6\\ \\ =1000-6\\\\=994[/tex]
Therefore, our final answer is 994.
A train leaves the station at time t=0. Traveling at a constant speed, the train travels 280 kilometers in 2 hours. Answer parts a and b.
a. Write a function that relates the distance traveled d to the time t.
The function that relates the distance traveled d to the time t is
Answer:
d = 140t
Step-by-step explanation:
The function that relates the distance travelled d to the time t is d = f(t) = 140t.
What is Speed?Speed is a scalar quantity which measures the rate of change of the position of an object without measuring on the direction.
In other words, it can be defined as the ratio of distance covered by an object to the time taken by the object to cover the distance.
The train leaves the station at time t = 0.
Distance travelled by the train = 280 kilometers
Time taken to travel the distance = 2 hours
Speed = Distance / Time
= 280 / 2
= 140 kilometers/ hour.
Given that train travels at a constant speed.
So for any distance 'd' and the time taken to travel the distance 't',
d / t = 140
d = 140t
d = f(t) = 140t
Hence the distance travelled by the train can be related to the time taken by the function, d = f(t) = 140t
To learn more about Speed, click :
https://brainly.com/question/28224010
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A basketball team played six games. In those games, the team won by 7 points, lost by 20, won by 8, won by 11, lost by 3, and won by 9. What is the mean amount by which the team won or lost over the six games?
Answer:
2
Step-by-step explanation:
Evaluate the expression when
x = 32 and y = 2.
x / 4x
A) 1/16
B) 16/21
C) 2
D) 4
PLEASE HELP FAST!!
Answer:
C
Step-by-step explanation:
32/4 (4)
32/16 = 2
Therefore, the answer is C, 2.
I hope this helps! Please mark me brainliest if you can!