Answer:
A manufacturing corporation make tires with a probability 0.77 of lasting over 3,000 miles.
Step-by-step explanation:
The probability of exactly seven out of the next eight tires lasting over 3,000 miles will be 0.32.
How to find that a given condition can be modelled by binomial distribution?Binomial distributions consist of n independent Bernoulli trials.
Bernoulli's trials are those trials which end up randomly either on success (with probability p) or on failures (with probability 1- p = q (say))
The probability that out of n trials, there'd be x successes is given by
[tex]\rm P(X =x) = \: ^nC_x \ p^x(1-p)^{n-x}[/tex]
A manufacturing corporation make tires with a probability 0.79 of lasting over 3,000 miles.
The probability of exactly seven out of the next eight tires lasting over 3,000 miles will be
P(x = 7) = ⁸C₇ (0.79)⁷ (1 – 0.79)⁽⁸⁻⁷⁾
P(x = 7) = 0.32
Learn more about binomial distribution here:
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#SPJ2
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3/1
213
- 3)
-
Simplify the expression
properties of operations used.
Cite the
5
(please help if you can and thank you so much!) hurry
Answer:
7/10 or 0.7
Step-by-step explanation:
-3/2 (1/3 - 4/5)
(-3/2) (1/3 + -4/5)
(-3/2)(1/3) + (-3/2)(-4/5)
-1/2 + 6/5
7/10
I think this PDF should assist you in the property of operations for fractions and also help you in solving future problems.
I dont get this question could someone help me out i will mark brainliest include steps!
Answer:
12.5
Step-by-step explanation:
In a rectangle, the two diagonals are equal length, so MK = JL = 2x + 9
Note MK = 2 * MN, so
2x + 9 = 2 * (3x + 1)
expand:
2x + 9 = 6x + 2
Solve:
9 - 2 = 6x - 2x
4x = 7
x = 7/4
MK = JL = 2x + 9 = 2 * 7/4 + 9 = 7/2 + 9 = 3.5 + 9 = 12.5
Which of the following expressions is equivalent to:
Help math math ASAP please please
Answer:
B. Parallel lines have the same slope
Step-by-step explanation:
The slope is the inclination, two parallel lines have the same inclination and never intersect.
Hope this helps
Add 1/6 +3/4 + 2/3. Simplify the answer and write it as a mixed number, if possible.
Answer:
1 7/12
Step-by-step explanation:
Answer:
1 7/12
Step-by-step explanation:
Firstly, I'm not a native speaker, nor do we do mathematics in English but I'll explain it as I could possibly
Let all the denominators be 12, so multiplying 1/6 with 2, becomes 2/12
3/4 becomes 9/12 (multiplying with 3)
2/3 becomes 8/12
Adding them you get 19/12,
after you divide 19 by 12, the remaining is 7,
so as in mixed numbers, it's 1 7/12.
A concert promoter is forecasting this year's attendance for one of his concerts based on the following historical data: What is this year's forecast using exponential smoothing with alpha = .2, if last year's smoothed forecast was 15,000?
The smoothed forecast for this year depends on last years forecast and
observation, as well as the value of alpha.
Response:
The forecast for this year is 16,000What relationship can be used to find the smoothed forecast?The given parameter are;
α = 0.2
From a similar question online, we have the following possible values;
Last year's smoothed forecast, F₄ = 15,000
Last years actual value, A₄ = 20,000
Required:
The forecast this year
Solution:
The exponential smoothing relationship is expressed as follows;
F₅ = F₄ + α·(A₄ - F₄)
Which gives;
F₅ = 15,000 + 0.2 × (20,000 - 15,000) = 16,000
This year's forecast, F₅ = 16,000
Learn more about forecasting here:
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what is the equation?
Answer:
Step-by-step explanation:
please help the question is on the picture attached.
The phasor representation of the signal v = 24 sin (θ - 30⁰) would be the vector Question 2 options: 24∠-30 24∠0 24∠90 24∠30
The vector representation of the phasor is given by:
24∠-30
What is a phasor?A phasor is a complex number, in the following format:
[tex]p = M\sin{(\theta - s)}[/tex]
In which:
M is the magnitude.s is the phase-shift.The vector representation is given by:
M∠s.
In this problem, the signal is:
[tex]v = 24\sin{(\theta - 30^\circ)}[/tex]
Hence, the vector representation is given by:
24∠-30
More can be learned about phasors at https://brainly.com/question/26334176
Find the surface area of this shape
Answer:
295 cm[tex] {}^{2} [/tex]
how do i solve this question for maths gcse ocr
Answer:
3 times
Step-by-step explanation:
Area of circle =pi*r^2
Area of shaded area=pi*4*4\2 (semi circle)
Area of unshaded area=pi *6*6-pi*4*4/2=pi*24
Divide 2nd by 1st
We get 3 times
What is the missing numerator?
Answer:
The missing numerator is 2
Step-by-step explanation:
Assign "x" to the numerator sought:
[tex]\frac{x}{7} +\frac{13}{14} =1\frac{3}{14}[/tex]
[tex]\frac{14x+91}{98} =\frac{14+3}{14}[/tex]
[tex]14x+91=98(\frac{17}{14} )[/tex]
[tex]14x=\frac{1666}{14} -91[/tex]
[tex]14x=119-91[/tex]
[tex]x=\frac{28}{14}[/tex]
[tex]x=2[/tex]
Hope this helps
convert 6.19 to fraction
Answer:
[tex]6.19=6\frac{19}{100}[/tex]
Step-by-step explanation:
[tex]6.19=6\frac{19}{100}[/tex]
PLEASE HELP ME FIND THE CORRECT ANSWERS FOR QUESTIONS 2 AND 3!!!
I WILL MARK BRAINLIEST!!
Answer:
top one is a
Step-by-step explanation:
bottom is d
solve and reduce to lowest terms 4\7 x 5\8
Answer:
5/14
Step-by-step explanation:
4/7 x 5/8 = 20 /56
Then divide by 4
20/56 x 4/4 = 5 /14
Answer:
The answer is 5/14
Step-by-step explanation:
i know cuz i took the test
need help with the problem.
a school principal of 790 students needs to determine what percent of students passed and did not pass a state wide examination.Round to the nearest percent.
a. if 570 students pass the exam, what percent passed the test?
B. what percent didn't pass the test?
Answer 40% passed
and 50% failed
Step-by-step explanation:
A random survey of 75 seventh graders at Cedar Middle School showed that 37 of them do volunteer work. Use these results to predict the approximate number of students who do volunteer work out of the 500 seventh graders at the school. Round to the nearest whole number.
Answer:
247 students
Step-by-step explanation:
37/75 = .49333...
so you multiply the 500 by .49333... and get
246.666
round up and get 247
Pls answer this for brainliest A refrigerator worth Rs.58000 is offered for sale at Rs.45000. What per cent discount is offered during the sale?
Discounts are used to reduce the price of items
The percentage discount during the sale is 22.41%
How to calculate the percentage discountThe given parameters are:
Worth = Rs 58000
Selling price = Rs 45000
Start by calculating the discount amount
Discount = Worth - Selling Price
So, we have:
Discount = Rs 58000 - Rs 45000
Discount = Rs 13000
The percentage discount is then calculated as:
[tex]\% Discount = \frac{Discount}{Worth}[/tex]
This gives
[tex]\% Discount = \frac{13000}{58000}[/tex]
Simplify
[tex]\% Discount = 22.41\%[/tex]
Hence, the percentage discount during the sale is 22.41%
Read more about discounts at:
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Look at image please
Answer:
the answer is going to be letter b
Please help I don’t understand how to do this
Answer:
65 degrees
Step-by-step explanation:
All angles of a triangle have to add up to 180 degrees. After establishing that, we can see that there are two angles given. 25 degrees and a 90-degree symbol. So if two angles add up to 115 degrees, we can do 180-115=65 to find the angle of C.
Answer:
m∠C=65°
Step-by-step explanation:
m∠B=90°
m∠A=25°
m∠A+m∠B+m∠C=180°
25°+90°+m∠C=180°
m∠C=180°-(90°+25°)
m∠C=65°
Hope it helps! :)
HELP ME QUICK!!
Complete the equation that represents the relationship between n and s.
Answer: s=n+6
Step-by-step explanation:
We know that s increases by 1 every time n increases by 1.
So we have s = n + [something]
To find this [something], we can just substitute one pair of values.
Take n=1, s=7 - we'll get 7 = 1 + [something] -> [something] = 6
So we have s = n+6
***Need answer and help to understand
Answer:
a. given ∠1≅∠2, the converse of the corresponding angles theorem shows l║m.
Step-by-step explanation:
There are several things you need to know to be able to answer this question.
corresponding angles where a transversal crosses (parallel) lines are angles that are in the same direction from the points of intersection. Here angles 1 and 2 are both "northwest" of the points of intersection, so are corresponding angles.the "corresponding angles theorem" tells you "if the lines are parallel, then corresponding angles at a transversal are congruent."the converse of a theorem "if A, then B" is "if B, then A". Here, the converse of the "corresponding angles theorem" is "if the corresponding angles at a transversal are congruent, then the lines are parallel."__
You are given ∠1 ≅ ∠2, so the hypothesis of the converse of the corresponding angles theorem is already true. The conclusion that the lines are parallel is what you are asked to prove. To prove that, you only need to identify the angles as being corresponding, and invoke the theorem. The logic matches answer choice A.
∠1≅∠2 is given. The diagram shows ∠1 and ∠2 are corresponding angles, so by the converse of the Corresponding Angles Theorem, l║m.
make b the subject of formula
[tex]a = \frac{1}{2} bh[/tex]
Answer:
[tex]a = \frac{1}{2} bh \\ \\ b = a \div ( \frac{1}{2} h) \\ \\ b = a \times \frac{2}{h} \\ \\ b = \frac{2a}{h} [/tex]
The scale on a 1:50 000 Ordnance Survey map indicates that 2 cm on the map
= 1 km on the ground.
How many centimetres would 1km be represented by on a 1:25 000 scale map?
?cm
Christina used 2 1/3 gallons of gas to drive her car 64 1/6 miles. What was the fuel efficiency of her car, in miles per gallon, for the trip?
Answer: 27 1/2 miles per gallon
Step-by-step explanation: trust me bro
PLS HELP
Jen traveled from Boston to Cape Cod at 60 mph. On her way back, the
traffic was bad and her return trip took 3 times as long. What was Jen's
average speed on the round trip?
Answer: 30 mph
Step-by-step explanation: As we know: the formula for Average Speed (AS) is Average Speed = Total Distance ÷ Total Time.
Since we don't know exactly how far Jen needed to drive, our distance there will be 1, and since we don't know how long it took to get there, we will put 1 as well.
Now we have to state the distance and time to get back. The distance will stay the same so we keep it 1. Now it is stated that when returning, it took Jen 3 times slower to get back, so we do 1 × 3 (because it took her longer) and get 3.
Next, we substitute: AS=TD÷TT ⇒ AS= (1+1) ÷ (1+3) = 2 ÷ 4= 1/2 or 1.4
Since our given beginning speed was 60mph, we need to multiply by 1/2 to get the final answer:
1/2 x 60 = 30
So ya, this is the answer *100% correct, checked on another website*
Function of the
graph
Ahmad has $112 in his checking account and earns $75 per week
working part-time. Assume he has no expenses currently.
Create an equation to model the above scenario.
Answer:
total = 75x + 112
Step-by-step explanation:
I did 75x because x would be how many weeks and added 112 because of the starting amount
A shirt she is making. One button is 1/8 inch, one is 3/8 inch, and one is 1/4 inch, the button hole in the shower is 2/6 of an inch which of the buttons will fit through the button hole and explain
Answer:
1/4
Step-by-step explanation:
1.Spooky has a favourite number. It is a 2 digit number. The total of the digits is 10. It is an even number It is less than 30. What is it? .........
Answer:
10
Step-by-step explanation:
Even numbers less than 30 are:
2,4,6,8,10,12,14,16,18,20,22,24,26,28
We know it has two digits so we can cross out:
2,4,6,8
We are left with the last piece of information being that it's total is 10 - none of the remaining numbers add up / total to 10 therefore Spooky's favourite number is 10 !