The length of a telephone call made to a company is denoted by the continuous random variable T. It is modeled by the probability density function \(f(t) = 1/50t, 0 < t < 5\).
To calculate the probability that a telephone call will last more than 2 minutes,
we can integrate the probability density function from 2 to 5
since the density function is valid only for 0 < t < 5.
The probability of a telephone call lasting more than 2 minutes is given by:
\(∫f(t)dt from t = 2 to 5= ∫2/50t dt from t = 2 to 5= [2/50 ln|t|] from t = 2 to 5= (2/50 ln(5)) - (2/50 ln(2))= 0.0995 or 9.95%.\)
Hence, the probability that a telephone call will last more than 2 minutes is 9.95%.
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2
y
b
P
0
The equation of the line / in the diagram is y = 5-x.
The line cuts the y-axis at P.
a
Write down the co-ordinates of P.
Write down the gradient of the line 1.
NOT TO
SCALE
Given that the equation of the line in the diagram is `y = 5 - x`. The line cuts the y-axis at P. So, the coordinates of point P are (0,5) and the gradient of the line is `-1`.
The equation of the line can be written as `y = -1x + 5`.Therefore, the y-intercept of the line is 5. Therefore, the coordinates of point P are (0,5).
To find the gradient of the line, we have to write the equation of the line in the form of `y = mx + c`.
We can rewrite `y = -1x + 5` as `y = (-1)x + 5`.From the above form of the equation, we can see that the gradient `m` is `-1`.Therefore, the gradient of line 1 is `-1`.Hence, the required answer is: Coordinates of point P is `(0,5)`.The gradient of the line is `-1`.
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how far is piont 1,2 then piont 2,5
Answer: d = 3.162278
Step-by-step explanation:
Answer:
3.162278
Step-by-step explanation:
Grace made a dot plot showing the distances she ran each day for two weeks. She says that she usually runs 7 miles each day because that is the distance that occurs most often. Do you agree with Grace's reasoning?
Answer: No
Step-by-step explanation:
Because Mode is not the best centre of tendency use for statistical data. And mode cannot be used for average.
Mean should be used for average values
Answer:
da ba dee da ba doo im blue
Step-by-step explanation:
Grace made a dot plot showing the distances she ran each day for two weeks.
She says that she usually runs 7 miles each day because that is the distance that occurs most often.
Do you agree with Grace’s reasoning?
Use the drop-down menus to explain and show your answer.
Dot plot named as ALTDCDistances RunALTDC has number line from 1 to 7. 1 dot on 1, 3 dots on 2, 3 dots on 3, 3 dots on 4 and 4 dots on 7 are given.
The mode, which is (3,4, or 7) ,(is or is not) a typical distance for the data. The median, which is (3.5,4, or 7),(is or is not) a typical distance for the data. The mean, which is (3,4, or 7) ,(is or is not) a typical distance for the data. So, Grace’s reasoning(is or is not ) correct.
f(x) = 3x²5x + 20
Find f(-8)
Answer:
f(-8)= -7660
Step-by-step explanation:
f(-8)= 3(-8)^2·5(-8)+20
write a story that best explains the motion shown by the graph given in figure 1.16....
please help me within 1 hr
The story based on the distance-time graph is given below:
The Story that describes the distance-time graphOnce upon a time, there was a daring bird named Ziggy. Ziggy loved to soar high in the sky, feeling the wind rush beneath her wings.
One day, as she flew higher and higher, she spotted a berry bush on the ground below. Without thinking twice, she dove down to snatch a berry.
But as she got closer, she realized the bush was a trap set by a mischievous fox. Ziggy narrowly escaped the trap and soared back into the sky, but not before losing some altitude.
Determined to keep flying, Ziggy flapped her wings with all her might, gradually ascending back up to her previous height. And as she flew onward, she couldn't help but wonder what other surprises lay ahead.
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Charlie and Leo were playing with toy cars. Charlie said to Leo that if you give me one car, then i will have twice as many cars as you have. Leo said if charlie gives him a car, they will be equal. How many cars does each boy have? HELP IN PLAYING A BATTLESHIP GAME
Step-by-step explanation:
C + 1 = 2(L-1)
C +1= 2L -2
C- 2L = -3 ......(eq.1)
L+1 = C-1
C- L = 2 .....(eq.2)
by elimination :
C - 2L = -3
C - L = 2
________-
- L = -5
L = 5
C = 2+5 = 7
so, Leo has 5 cars and Charlie has 7 cars
Answer:
Charlie=7, Leo=5
Step-by-step explanation:
cant explain
If T bisects SU, then find the value of X, then find SU
ST: x^2
TU: 4x+32
Answer: If T is the midpoint, then ST = TU. 8x + 11 = 12x - 1.
Step-by-step explanation:
Answer:
SU is x² + 4x + 32
Step-by-step explanation:
That means T is a point between SU. Therefore;
SU = ST + TU
\(SU = ( {x}^{2} ) + (4x + 32) \\ SU = {x}^{2} + 4x + 32\)
please help asap !!!!!
Answer:
\(\dashrightarrow \: { \tt{3.{ \bar{42}, \: \: 0, \: \: \frac{17}{9}, \: \: \frac{7}{3} , \: \: - 6, \: \: 8 }}}\)
Step-by-step explanation:
• A rational number is a number which can have a denominator i.e fraction, integers [ have denominator of 1 ]
Answer:
A,C,D,E,F,G
Step-by-step explanation:
...............hope it helps
How do you know what the unit rate is on a graph?
On a linear graph, the unit rate is obtained by calculating the slope of the line.
What is the equation of a vertical line that passes through the point (-3, 4)?
x= 3
x=-3
x=4
x= -4
Answer:
x = -3
Step-by-step explanation:
Together, the areas of the rectangles sum to 30 square centimeters.
Solution
Area of the rectangle = length x breadth
A. Write an equation to showing relationship between x and y:
\(\begin{gathered} \text{Area = length x breadth} \\ A=l\text{ x b} \\ A_1=3x \\ A_2=2y \end{gathered}\)\(\begin{gathered} A_1+A_2=30_{} \\ 3x+2y=30 \end{gathered}\)The equation for the relationship between x and y is
3x + 2y = 30
Find the value of x that will make k
|| m.
(4x+11)°
(6x-13)°
Louis wrapped one fifth of a present in one tenth of a minute. What's the rate in presents per minute?
Answer:
working on it
Step-by-step explanation:
6. suppose [a],[b] ∈ z6 and [a]·[b] = [0]. is it necessarily true that either [a] = [0] or [b] = [0]? what if [a],[b] ∈ z7?
It is not necessarily true that either [a] = [0] or [b] = [0] when [a],[b] ∈ z6 and [a]·[b] = [0].
This is because in z6, there are other pairs of elements that multiply to [0] besides [0] and any other element. For example, [2]·[3] = [6] = [0] in z6, but neither [2] nor [3] are equal to [0].
However, if [a],[b] ∈ z7 and [a]·[b] = [0], then it is necessarily true that either [a] = [0] or [b] = [0]. This is because z7 is a field, meaning that it has no zero divisors (elements that multiply to [0] besides [0] itself). Therefore, the only way for [a]·[b] = [0] in z7 is if either [a] or [b] are equal to [0].
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: Prove that a) X'Y' + X'Y +XY = X' +Y b) A'BC' + ABC' + BC'D = BC' Find the complement of the following function a) WX(Y'Z+YZ') + W'X'(Y' +Z)(Y+Z') b) (A+B'+C') (A'B' +C)(A + B'C') Find Dual of question 2 (a, b),
a) X'Y' + X'Y + XY simplifies to X' + Y.
b) A'BC' + ABC' + BC'D simplifies to BC'.
Complement of the functions:
a) Complement is W' + X' + YZ.
b) Complement is (A' + B + C)(A'B' + C' + A'B).
a) To prove X'Y' + X'Y + XY = X' + Y, we can use Boolean algebra identities:
X'Y' + X'Y + XY
= Y'(X' + X) + XY(Distributive Law)
= Y' + XY(X + X' = 1)
= X' + Y(Commutative Law)
Therefore, X'Y' + X'Y + XY simplifies to X' + Y.
b) To prove A'BC' + ABC' + BC'D = BC', we can simplify the expression using Boolean algebra:
A'BC' + ABC' + BC'D
= BC'(A' + A) + BC'D (Distributive Law)
= BC' + BC'D(A + A' = 1)
= BC'(BC' + BC'D = BC' + BC'(1) = BC')
Hence, A'BC' + ABC' + BC'D simplifies to BC'.
Complement of the given functions:
a) The complement of WX(Y'Z + YZ') + W'X'(Y' + Z)(Y + Z') is W' + X' + YZ.
b) The complement of (A + B' + C')(A'B' + C)(A + B'C') is (A' + B + C)(A'B' + C' + A'B).
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5. Verify the property a× (b-c)= a×b-a×c for each of the following:
a= -3\5; b= 5\9; c= -10\3
Answer:
We conclude that
\(a\times \left(b-c\right)=\:a\times b-a\times c\)
\(-\frac{7}{3}=-\frac{7}{3}\)
L.H.S = R.H.S
Step-by-step explanation:
Given the property expression
\(a\times \left(b-c\right)=\:a\times b-a\times c\)
Given that:
a = -3/5b = 5/9c = -10/3Determining the LEFT-HAND SIDE
\(a\times \left(b-c\right)\)
substituting a= -3/5, b= 5/9 and c= -10/3
\(a\times \left(b-c\right)\:=\:\:-\frac{3}{5}\times \left(\frac{5}{9}-\left(-\frac{10}{3}\right)\right)\:\:\:\:\:\:\:\:\:\:\:\:\)
\(=-\frac{3}{5}\times \:\left(\frac{5}{9}+\frac{10}{3}\right)\:\:\:\)
\(=-\frac{3}{5}\times \frac{35}{9}\)
\(=-\frac{7}{3}\)
Determining the RIGHT-HAND SIDE
\(\:a\times \:b-a\times \:c\)
substituting a= -3/5, b= 5/9 and c= -10/3
\(\:a\times \:b-a\times \:c=ab-ac\)
\(=-\frac{3}{5}\left(\frac{5}{9}\right)-\left(-\frac{3}{5}\right)\left(-\frac{10}{3}\right)\)
\(=-\frac{3}{5}\cdot \frac{5}{9}-\frac{3}{5}\cdot \frac{10}{3}\)
\(=-\frac{15}{45}-\frac{30}{15}\)
\(=-\frac{1}{3}-2\)
\(=\frac{-7}{3}\)
Apply the fraction rule: \(\frac{-a}{b}=-\frac{a}{b}\)
\(=-\frac{7}{3}\)
Therefore, we conclude that
\(a\times \left(b-c\right)=\:a\times b-a\times c\)
\(-\frac{7}{3}=-\frac{7}{3}\)
L.H.S = R.H.S
What is equation of the line graphed below. Y= - 5/2 x-2 -this question was accidentally cut out
Answer:
y = - \(\frac{5}{2}\) x - 2
Step-by-step explanation:
the equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
calculate m using the slope formula
m = \(\frac{y_{2}-y_{1} }{x_{2}-x_{1} }\)
with (x₁, y₁ ) = (- 2, 3) and (x₂, y₂ ) = (0, - 2) ← 2 points on the line
m = \(\frac{-2-3}{0-(-2)}\) = \(\frac{-5}{0+2}\) = - \(\frac{5}{2}\)
the line crosses the y- axis at (0, - 2 ) ⇒ c = - 2
y = - \(\frac{5}{2}\) x - 2 ← equation of line
Find the area of the shaded portion of the square
1. The area of shaded portion is 75m².
2. The area of shaded portion is 104 m².
3. The area of shaded portion is 284 m²
How to calculate the areaArea of the square = 10 × 10 = 100m²
Area of unshaded portion= 5 × 5 = 25 m²
therefore, area of shaded portion = 100- 25 = 75m²
2. Area of rectangle = 30 × 19= 480m²
area of unshaded portion= 28 × 17 = 376m²
therefore, area of shaded portion= 480 - 376 = 104 m²
3. Area of rectangle= 60 × 40 = 2400m²
area of unshaded portion= 56 × 36 = 2016m²
therefore, area of shaded portion= 2400- 2016 = 284 m²
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The area of a rectangular room is 750 square feet. The width of the room is 5 feet less than the length of the room. Which equations can be used to solve for y, the length of the room? Select three options. y(y + 5) = 750 y2 – 5y = 750 750 – y(y – 5) = 0 y(y – 5) + 750 = 0 (y + 25)(y – 30) = 0
a lab group investigates the maximum weight students can lift with their arms compared to their legs. if their t' value was 0.35, which of the following conclusions would be justified? group of answer choices it's unlikely there's a difference between the arms and legs data. it's likely there's a difference between the arms and legs data. they can't dertermine whether there is or is not a difference between the arms and legs data. this is a difference between the arms and legs data.
Based on the given t-value of 0.35, it's unlikely that there's a difference between the arms and legs data in terms of the maximum weight students can lift.
If the t-value of the lab group investigating the maximum weight students can lift with their arms compared to their legs is 0.35, the conclusion that would be justified is that it's unlikely there's a significant difference between the arms and legs data. A t-value is used to determine if there is a significant difference between two sets of data. In this case, the t-value is 0.35, which is a relatively small value. When the t-value is small, it indicates that the difference between the two sets of data is not significant. Therefore, it is unlikely that there is a significant difference between the maximum weight students can lift with their arms compared to their legs. However, it's important to note that this conclusion is based solely on the t-value and does not take into account any other factors that may affect the results, such as sample size or individual variability.
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Avery's bottle holds 400 milliliters.
Dashawn's bottle holds 3/4 as much
How many milliliters of water do both containers hold?
Answer:
you could make this really simple by dividing 300 by 4 to see how much 1/4 of that is and then subtracting 1/4 from 300 to see how much dashawn's water bottle holds,
Step-by-step explanation:
300/4 =75 so 1/4 is equal to 75 mL
300-75=225mL
Dashawn's water bottle holds 225mL
Determine whether the logic used in each question is inductive reasoning or deductive reasoning.
a) Everyone in the Family Madrigal has a special gift. Luisa is in the Family Madrigal. Therefore, Luisa has a special gift.
b) Every dog I have seen is covered in fur. Barky is a dog. Therefore, Barky is covered in fur.
In both cases, the logic used is deductive reasoning. In the first question (a), the logic follows the form of a deductive syllogism. In the second question (b), the logic follows a deductive pattern.
In the first question (a), the logic follows the form of a deductive syllogism. It starts with a general premise that everyone in the Family Madrigal has a special gift. The second premise states that Luisa is in the Family Madrigal. From these two premises, the conclusion is drawn that Luisa has a special gift. This deductive reasoning relies on the truth of the premises and the logical structure of the argument.
Similarly, in the second question (b), the logic follows a deductive pattern. The first premise states that every dog the person has seen is covered in fur. The second premise states that Barky is a dog. From these premises, the conclusion is drawn that Barky is covered in fur. This deductive reasoning relies on the assumption that the person's observations are representative and that Barky fits the category of dogs.
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A car is driving down a road at a normal speed of 50 miles per hour. It enters a hilly area of gradual incline and decline, where it must drive 50 miles up hill and then 50 miles downhill. If this 100 mile section of road takes 2.6 hours to traverse instead of the expected 2 hours (the time it would take if the road was completely flat) determine the speed that the hills add or subtract when going over.
Answer:
Step-by-step explanation:
I'm going to assume that the car goes 50-x mph uphill and 50+x mph downhill.
x ≅ 24 miles per hour
26 mph uphill and 74 mph downhill
Please help! Worth more points will mark as brainiest
Answer:
252 m^2
Step-by-step explanation:
The equation for surface area in a rectangular prism is SA = 2 (lh +wh + lw ).
So when we plug in the numbers inti the equation we do SA = 2(12×3 + 6×3 + 12×6)
FOLLOW P.E.M.D.A.S (parentheses, exponents, multiplication, division, addition, subtraction)
we get SA = 2(36 + 18 + 72)
then we multiply 2, by each of the numbers.
SA = (72 + 36 + 144)
Add them together and you get
SA = 252
Can some help pleasee it is due tonight and it’s the only question I need,I also need to do ate by step if it’s not much to ask
Answer: -3/16
Step-by-step explanation:
When there is a negative exponent like x^-2 it equals 1/(x^2) the negative puts the number as a fraction so continuing...
-12(x^-2) (y^-2) can be rewritten as
-12 (1/x^2) (1/y^2) now we plug in x = -2 and y = 4
-12 (1/(-2^2) (1/(4^2)); -2^2 = 4 , 4^2 = 16
-12 (1/4) (1/16)
-3 (1/16)
= -3/16
Justin works in a department store selling clothing. He makes a guaranteed salary of $450 per week, but is paid a commision on top of his base salary equal to 30% of his total sales for the week. How much would Justin make in a week in which he made $2425 in sales? How much would Justin make in a week if he made x dollars in
We can convert that 30% into a decimal, as: 0.3 (That's 30/100)
Now, we can multiply this 0.3 by any quantity that we want to calculate 30% from.
For example, let's take Justin's commission:
\(2425\cdot0.3=727.5\)Adding this to his base salary,
\(450+727.5=1177.5\)We can conclude that Justin's paycheck for the week would be $1,117.5
Similarly, the expression for Justin's paycheck in a week were he made x dollars in sales is:
\(0.3x+450\)3x - 8 = 3(x - 4) + 1
Answer:
No Solution.
Step-by-step explanation:
3x-8=3(x-4)+1
3x-8=3x-12+1
3x-3x-8=-12+1
-8=-11
no solution.
A biking track has the lenght of 0.95 mi. How long is this in feet?
Answer:
5016 feet
Step-by-step explanation:
Solve the system by substitution. Check your solution. 0.5 x + 0.25 y = 36. y + 18 = 16 x. a. (36, 72) c. (49, 81) b. (9, 126) d. (21, 9) Please select the best answer from the choices provided A B C D
Answer:
Answer is in attached photo. (B)
Step-by-step explanation:
SolutionThe solution is in the attached photo , do note the question might specify the method to use to solve the equations, just like this the question:
1) Substitution Method
2) Elimination Method
Please help! Easy! Does the function model exponential growth or decay? f(t)= 1/4 * 4^t a) growth b) decay
Answer:
a) growth
Step-by-step explanation:
f(t) = 1/4 × 4^t
let t = 2
f(2) = 1/4 × 4²
f(2) = 4
let t = 3
f(3) = 1/4 × 4³
f(3) = 16
As the value of t increases, the output increases, so the answer is a) growth.