Answer:
86
Step-by-step explanation:
URGENT!!! A factory process requires 3 steps to finish a product. The steps each have a mean completion time of A= 10 seconds and a standard deviation of o = 5 seconds. The time it takes to complete each step is independent from the other steps. Let T be the total completion time for the 3 steps.
Find the standard deviation of T.
Choose 1 answer:
OT = 15 seconds
Or = 75 seconds
or 15 seconds
or = v75 seconds
Answer:
d
Step-by-step explanation:
The standard deviation of T is equivalent to 5.
What is standard deviation?In statistics, the standard deviation is a measure of the amount of variation or dispersion of a set of values. A low standard deviation indicates that the values tend to be close to the mean (also called the expected value) of the set, while a high standard deviation indicates that the values are spread out over a wider range.Mathematically, we can write -[tex]$\sigma={\sqrt {\frac {\sum(x_{i}-{\mu})^{2}}{N}}}[/tex]
Given is that a factory process requires 3 steps to finish a product. The steps each have a mean completion time of A = 10 seconds and a standard deviation of O = 5 seconds. The time it takes to complete each step is independent from the other steps.
We can write that -
5 = √∑(x{i} - 10)²/√3
√∑(x{i} - 10)² = 5√3
(√∑(x{i} - 10)²)² = (5√3)²
∑(x{i} - 10)² = 25 x 3
∑(x{i} - 10)² = 75
Now, we can write that -
σ = √(75/3)
σ = √25
σ = 5
Therefore, the standard deviation of T is equivalent to 5.
To solve more questions on standard devaition, visit the link below -
https://brainly.com/question/23907081
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Can somebody help me please
what is the slope of the line passing through the points (2, 5) and (-1, -4)? show your work
Answer:
We can solve this question using the slope equation which is y2-y1/x2-x1
If you use that formula and sub in the coordinates
-4 - 5 / -1-2
-9/-3
= 3
The slope should be 3/1
Answer:
m = 3
Step-by-step explanation:
Use slope formula
m = [tex]\frac{y2 - y1}{x2 - x1}[/tex]
-4-5/-1-2 = 3
if p(a)=0.24 and p(b)=0.52 and a and b are independent, what is p(a or b)?
The probability of P(a or b) is 0.1248
Given the following probabilities
P(a) = 0.24
P(b) = 0.52
Independent events mean that each event can occur at different times.
P(a or b) = P(a) * P(b)
Substitute the given parameters into the formula;
P(a or b) = 0.24 * 0.52
P(a or b) = 0.1248
Hence the probability of P(a or b) is 0.1248
Learn more on probability here: https://brainly.com/question/13604758
Please help!!!!!!! Tysm!!
Answer:
it's the first answer
Step-by-step explanation:
its 2/9 because 1/3 × 2/3 = 2/9
Answer:
It's C
Step-by-step explanation:
1/3 x 2/3 = 2/9, which simplifies back to 1/3
and 1/3=2/6
Please help me solve this problem.
Mary needs to buy 4 concert tickets and one parking pass. If parking is $12, and she can spend at most $80, what ticket prices can she afford? (set up an inequality, do not solve)
Answer:
4t + 12 [tex]\leq[/tex] 80
Step-by-step explanation:
Set up an inequality where t is the cost of one ticket
Since her budget is $80, a less than or equal sign needs to be used.
4t will represent the total cost of the tickets, since she needs to buy 4. Add 12 to this to represent the parking cost:
4t + 12 [tex]\leq[/tex] 80 is the inequality.
Please please please help.
Answer and Step-by-step explanation:
A. Cruz is correct.
B. When we have a negative within a cube root, what we can do is move the negative sign from inside to outside the cube root.
[tex]\sqrt[3]{-64} = -\sqrt[3]{64}[/tex]
Now that we have a positive number within the cube root, we can solve the cube root itself.
So what is the cube root of 64?
The answer is 4, and since we have a negative sign outside of the cuberoot, we just put a negative sign, our answer is -4.
C. Aaron could've got it wrong because he did it a square root instead of a cuberoot of 64. Square root of 64 is 8, while cube root is 4.
Jacob could've gotten it wrong because he must've followed the fallacy that you cannot cube root a negative number.
Tell whether each statement about the expression 5y + 9 is True or False
The number 5 in the expression is a constant.
The expression has one variable term.
The variable in the expression is y.
The number 5 is not a coefficient in the expression.
The expression has three terms.
Answer:
1st one is false
the second one is true i think ;-;
3rd is true
4th is false
5th is also false i think
Step-by-step explanation:
pls answer i need help with 2 questions
Answer:
(2, 8) and (-2, 7)
Step-by-step explanation:
You can plug in the respective x and y values and see what works.
What is another way to express 9⁴?
Answer:
6561
Step-by-step explanation:
Simplifying 9⁴ gives 6561
You can multiply exponents to get certain values, so it can also be expressed as:
[tex](9^{2})^2[/tex]
I don't understand this, could somebody tell me what to do?
Answer:
basically you take the original price aka the first thing so the price of the obj and you increase or decrease by the following percent.
Step-by-step explanation:
(if u dont get how to actually do the math just search up how to increase and decrease by fractions cause its kinda too long for me to explain) i hope this kinda-ish helped.
during her first six months, susie gained 25% more than her birth weight. if she gained 2 1/2 pounds during this period, how much did she weigh at birth?
Answer:
the answer is
25% = 2.5 pounds
25 x 4 = 100%
2.5 x 4 = 10 pounds
Step-by-step explanation:
Simplify the expression:
(6y + 10) - (2y + 3)
show work if u can
Answer:
4y + 7
Step-by-step explanation:
(6y + 10) - (2y + 3)
6y - 2y = 4y
10 - 3 = 7
4y + 7
complete the statement of each of these rules:
a (+)×(?)=(+)
b (-)×(+)=?
c (?)×(-)=?
Answer:
a) (+) × (?) = (+)
(?) = (+)
b) (-) × (+) = ?
? = (-)
c) (?) × (-) = ?
? is undefined
Step-by-step explanation:
a) (+) × (?) = (+)
From the given equation in the question, by dividing both side of the equation by (+), we have;
((+) × (?))/(+) = (+)/(+)
(?) = (+)/(+) = (+)
Therefore, we have;
(+) × (+) = (+)
(?) = (+)
b) (-) × (+) = ?
From the given equation in the question we apply the operation rules as follows;
(-) × (-) = (+)
(-) × (+) = (-)
Therefore;
(-) × (+) = ? = (-)
? = (-)
c) (?) × (-) = ?
From the rules of multiplication, we have;
(-) × (-) = (+)
(+) × (-) = (-)
Therefore, when (?) = (-), ? = +, from which we have;
(?) ≠ ?, which is an error
Similarly, when (?) = (+), ? = -, therefore, (?) and ?, always changes sign
Therefore, the equation, (?) × (-) = ?, is undefined.
One winter day, the temperature was -15 degrees Fahrenheit. Later that day the temperature rose 12 degrees Fahrenheit to reach the high temperature for the day. If t represents the high temperature what is t.
-3
-15 plus 12 is -3
so T= -3
Write two equivalent expressions for 15(3 + w).
1.
2.
1. 45+15w
2. 3(15+5w)
Please mark brainliest
place (−6, 8) on the coordinate plane.
Answer:
6 spots to the left and then 8 spots up
Step-by-step explanation:
Just go 6 spots to the left and then 8 spots up
Answer:
Thats where you put it
The midpoint of \overline{\text{AB}} AB is M(5, 1)M(5,1). If the coordinates of AA are (3, 6)(3,6), what are the coordinates of BB?
Answer:
(7, -4)
Step-by-step explanation:
The formula for calculating midpoint is expressed as;
M(X, Y) = (x2+x1)/2, (y1+y2)/2
X = x1+x2/2
Y = y1+y2/2
Given
X = 5, Y = 1, x1 = 3, y1 = 6
Get x2
X = x1+x2/2
5 = 3+x2/2
10 = 3+x2
x2 = 10-3
x2 = 7
Get y2;
Y = y1+y2/2
1 = 6+y2/2
2 = 6+y2
y2 = 2-6
y2 = -4
Hence the coordinate of B is at (7, -4)
In the triangle below, x= cm round to the nearest tenth
9514 1404 393
Answer:
8.6 cm
Step-by-step explanation:
We notice the hypotenuse is given, and the desired length is of the side opposite the given angle.
The mnemonic SOH CAH TOA reminds you of the relevant relationship:
Sin = Opposite/Hypotenuse
sin(35°) = x/(15 cm) . . . . . . fill in the given information
We can multiply by 15 cm to find the value of x.
x = (15 cm)sin(35°)
x ≈ 8.6
_____
For those inclined to copy this answer to a different question, we suggest ...
y = (15 cm)cos(35°) ≈ 12.3 cm
Answer: 8.603646545 or rounded to the nearest tenth 8.6
Step-by-step explanation:
you are going to have to use (sin). so,
(15)sin(35)
8.603646545 or 8.6
this is correct.
Algerba 1 , stuck on this :/
Answer:
neither is right
Step-by-step explanation:
it should factorize to (8x + 12) (x + 1)
Find the area n show work
which of the following rational functions is graphed below. A.F(x)=1/x(x+2) B. F(x)=2x/x(x-2) C.F(x)=2x/x(x-2) D. F(x)=(x+1)/(x+2)(x+0)
Answer:
you don't have the graph
Step-by-step explanation:
F
∝
a
If
F
=
72
when
a
=
9
find,
F
when
a
=
7
Answer:
56
Step-by-step explanation:
F ∝ a
72 ∝ 9 write this using = :
72 = k9 find k
72/9 = 8
so: if a is 7
7 x 8 = 56
I don’t know how to complete this problem. Can anyone help out? Please and thank you :)
70 students per 2 teachers. How many students per teacher?
Answer:
35 students per teacher
Step-by-step explanation:
Answer:
35 students per teacher
Step-by-step explanation:
Divide 70 and 2
70/2=35
Decrease 10kg by 20%
Answer:
8Kg
Step-by-step explanation:
20% of 10 = 2
10 - 2 = 8
That's your answer!
JoAnn paid $3.80 for each book at a book sale.
How much did she spend if she bought 9 books?
Answer:
$34.20
Step-by-step explanation:
total spent =3.80*9=$34.20
At a particular high school, 48% of all students have missed at least one school day in the past month. The school’s principal selects a random sample of 50 students, and 32% of those students say they missed at least one school day in the last month. Which statement is true?
A. 32% is a parameter and 50 is a statistic.
b. 32% is a parameter and 48% is a statistic.
c.32% is a population and 48% is a sample.
d.48% is a population and 32% is a sample.
e.48% is a parameter and 32% is a statistic.
Answer: E
Step-by-step explanation:
Answer:
E
Step-by-step explanation:
Mai gave half of her brownies, and then half a brownie more, to Kiran. Then she gave half of what was left,
and half a brownie more, to Tyler. That left her with one remaining brownie.
Can someone please help me with this problem, I really need help.
Answer:
x = 7
Step-by-step explanation:
all we know is that she had 1 brownie at the end, in the end she gave half her brownie to tyler, so add one who will get 1 1/2, before that she split her brownies between her friends, so multiply 1 1/2 by 2 and you will get 3, before that she gave 1/2 a brownie to Kiran, so we would add 1/2 to 3 and get 3 1/2, before that she first split it in half for a her friends, so at last, multiply 3 1/2 by 2 and you will geet 7 as your final answer.
The answer would be 7!
You would take 1 and add 1/2 to it
= 1 1/2
Then, multiply by 2
= 3
Then add 1/2 to that
= 3 1/2
Then multiply 2 one more time
= 7
This is because Mai gave half of her brownie and then half more of her brownie to each person she gave it to
So you would add 1 + 1/2 and then multiply by 2
Since she did this to 2 people you would repeat one more time!
Hope this helped!