Answer:
the value of 1 by 3- 1 by 2 is 1
Step-by-step explanation:
it is one because 1 by 3 is 1*3
that equals to 3
then you do 1 by 2 (aka 1*2)
then it is 3-2 which equals to 1
What is the solution to the system below?
x + 3y = 0
2x - y = -7
( x, y ) = ( -3, 1 )
hope it helps!
A machine is shut down for repair if a random sample of 100 items selected from the daily output of the machine reveals at least 15% defectives. Assume that daily output is a large number of items. If on one given day the machine is producing only 10% defective items, what is the probability that it will be shut down
Thus, the probability that the machine will be shut down for repair on a day when it is producing only 10% defective items is 3.3%.
The problem statement gives us a threshold of at least 15% defectives for the machine to be shut down for repair. This implies a binomial distribution with n = 100 and p >= 0.15.
Given that the machine is producing only 10% defective items on a given day, we need to find the probability of the sample having at least 15% defectives.
Using the binomial distribution formula, we can calculate the probability of having k or more defectives in a sample of size n with probability of success p:
P(X >= k) = 1 - P(X < k)
where P(X < k) = Σ (n choose i) * p^i * (1-p)^(n-i) for i = 0 to k-1
Plugging in the values, we get:
P(X >= 15) = 1 - P(X < 15)
= 1 - Σ (100 choose i) * 0.1^i * 0.9^(100-i) for i = 0 to 14
Using a calculator or statistical software, we can compute this probability to be approximately 0.033 or 3.3%.
Therefore, the probability that the machine will be shut down for repair on a day when it is producing only 10% defective items is 3.3%.
This suggests that the machine is not very likely to be shut down for repair on such a day, but it is still possible. The management may want to keep monitoring the production and take appropriate actions if the defect rate increases in the future.
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Deone's length was 19.5 inches at birth. Assuming his development proceeds normally, his length should be about ______ inches by his first birthday.
Deone's length was 19.5 inches at birth. Assuming his development proceeds normally, his length should be about 29.5 inches by his first birthday.
We know that According to the Centers for Disease Control and Prevention (CDC), the average length for a boy at birth is around 20 inches, and the average length for a boy at one year of age is around 30 inches.
To estimate Deone's length at one year of age, we use the average growth rate between birth and one year, which is approximately 10 inches.
So , we add 10 inches to Deone's length at birth of 19.5 inches to estimate his length at one year of age:
⇒ Estimated length at 1 year = 19.5 inches + 10 inches = 29.5 inches
Therefore, Deone's length should be about 29.5 inches by his first birthday, assuming that his development proceeds normally.
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Which describes the range of the parent absolute value function?
Answer:
C
Step-by-step explanation:
Just did the Unit Review
The ocean tides near Carter Beach follow a repeating pattern over time, with the amount of time between each low and high tide remaining relatively constant. On a certain day, low tide occurred at 8:30 a.m. and high tide occurred at 3:00 p.m. At high tide, the water level was 12 inches above the average local sea level; at low tide it was 12 inches below the average local sea level. Assume that high tide and low tide are the maximum and minimum water levels each day, respectively. Write a cosine function of the form f(t)
The cosine function of the form f(t) is f(t) = 12cos((π/360)(t - 270))
Let's denote the low tide as t = 0. Hence, the first low tide of a day will always be at t = 0. There is no vertical shift in the tide levels, so we can assume that the mean tide level is 0 inches.
Therefore, the high tide is 24 inches above the low tide.
The time period for the function is the time difference between two successive low tides which is equal to 12 hours or 720 minutes.
A cosine function can be written as f(t) = Acos(B(t-C)) + D where A is the amplitude, B is the period, C is the phase shift, and D is the vertical shift.
We can write a cosine function for the ocean tide as follows:f(t) = 24/2 cos((2π/720)(t - 270))
Here, the amplitude A is 24/2 = 12 since the high tide is 12 inches above the low tide.
The period B is 720 minutes since it takes 12 hours or 720 minutes for the tides to repeat themselves.The phase shift C is 270 since the high tide occurred halfway between the two low tides.
The vertical shift D is 0 because the mean tide level is 0 inches.
Hence, the required cosine function is f(t) = 12cos((π/360)(t - 270))
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need some help please
Select the correct answer from the drop-down menu.
Triangle ABC is shown with angle A measuring 45 degrees, angle B measuring 90 degrees, and angle C measuring 45 degrees.
In this triangle, the product of tan A and tan C is
.
In this triangle, the product of tan A and tan C is `(BC)^2/(AB)^2`.
The given triangle ABC has angle A measuring 45 degrees, angle B measuring 90 degrees, and angle C measuring 45 degrees , Answer: `(BC)^2/(AB)^2`.
We have to find the product of tan A and tan C.
In triangle ABC, tan A and tan C are equal as the opposite and adjacent sides of angles A and C are the same.
So, we have, tan A = tan C
Therefore, the product of tan A and tan C will be equal to (tan A)^2 or (tan C)^2.
Using the formula of tan: tan A = opposite/adjacent=BC/A Band, tan C = opposite/adjacent=AB/BC.
Thus, tan A = BC/AB tan C = AB/BC Taking the ratio of these two equations, we have: tan A/tan C = BC/AB ÷ AB/BC Tan A * tan C = BC^2/AB^2So, the product of tan A and tan C is equal to `(BC)^2/(AB)^2`.
Answer: `(BC)^2/(AB)^2`.
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SOMEONE HELP ME PLEASE ASAP AND SHOW THE WORK I WILL MAKE YOU BRAINLIEST AND GIVE YOU A GOOD RATE!!!!! SOMEONE HELP ASAPPPPPPPPPPPPPP!!!!!!!!!!!!!
Answer:
5x+10=30
Step-by-step explanation:
sorry, it does not have any works/steps in forming this equation.
Solving equation(if needed):
5x+10=30
5x=20
x=4
Answer: you can count by fives 5,10 15,20,25,30
Step-by-step explanation:
please help
will give brainliest
i cannot read it swry
Question 3
The distance from Mason's house to Kevin's house is about 5 x 10 to the power of 5 inches. The distance from Mason's house to Chloe's house is about 8 x 10 to the power of 7 inches
The distance from Mason's house to Chloe's house is how many times greater than the distance from Mason's to Kevin's house?
9514 1404 393
Answer:
160
Step-by-step explanation:
Your calculator can compute the ratio of distances for you.
\(\dfrac{8\times10^7}{5\times10^5}=\dfrac{8}{5}\times10^{7-5}=1.6\times10^2=\boxed{160}\)
Chloe's house is 160 times as far as Mason's house.
What is the equation of this line?
y= 4x
y= 1/4x
y = -4x
y=-1/4x
What is the location of F on the decimal number line below?
Write your answer as a decimal
Answer:
6.45
Step-by-step explanation:
Every part is 0.01 bigger or smaller
You can find it out by subtraction and then division
6.5 - 6.4 = 0.1
0.1 : 10 = 0.01
There are 10 parts that's why you divide it by 10.
If there will be 2 parts you will divide by 2
Location of F on the given decimal number line is \(6.45\) .
What is number line?" Number line is defined as a straight line which represents the numbers on it with equal interval."
According to the question,
Given number line,
F is between two decimal numbers \(6.4\) and \(6.5\)
\(6.4\) and \(6.5\) divides into \(10\) equal parts.
On the number line distance between \(6.4\) and \(6.5\) is equals to \(0.1\)
Each part represents \(0.1 \over 10\) distance which is equals to \(0.01\).
F is on the \(5th\) location.
On the number line distance of F from \(6.4\) is \(0.01 \times 5 = 0.05\)
Therefore, location of F
\(= 6.4 + 0.05\\\\= 6.45\)
Hence, location of F on the given decimal number line is \(6.45\) .
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A town is storing salt for the winter in a cylindrical building. The building has a radius of 5 ft and is 30 ft tall. The building contains 1,500 ft3 of salt. What is the approximate height that the salt reaches in the building?
The answer are:
A. 0.5 ft
B. 5 ft
C. 19 ft
D. 22 ft
Answer:
To start off, we know the problem involves something with volume as it is 3D and has a cubic in it.
We know r = 5, h = 30, and v = 1500
The volume for a cylinder in 3d is : V=\(\pi\)\(r^{2}\)h
We're solving for the height when the cylinder has a volume of 1500, therefor, we will solve for height.
Using our volume equation we plug in all values except h because we're solving for it.
1500=\(\pi r^{2} h\)
1500=\(\pi 5^{2} h\)
1500=25\(\pi\)(h)
1500/25\(\pi\) = h
60/\(\pi\) = h
60/\(\pi\) = 19.0985
H is 19ft. (C)
which equation could represent a line that is parallel to y=-2x+4
Answer:
y = -2x + z
Step-by-step explanation:
z is a number other than 4.
Is this a true statement?8 + y = 10, y = 5
Answer:
No it is not
Step-by-step explanation:
8 + 5 = 13 or 10
(Just substitute values)
Have a great day.
A group of students weighs 500 US pennies. They find that the pennies have normally distributed weights with a mean of 3. 1g and a standard deviation of 0. 14g
a) 81.86 percent of the pennies will weigh between 2.7 and 3.3g. b) 100 percent of the pennies will weigh between 2.5 and 3.7g. c) 2.28 percent of the pennies will weigh less than 2.7g. d) 15.87 percent of the pennies will weigh more than 3.3g.
To solve these questions, we will use the properties of the normal distribution and z-scores.
a) To find the percentage of pennies that weigh between 2.7 and 3.3g, we need to calculate the area under the normal curve between these two values.
First, we need to standardize the values using z-scores:
z1 = (2.7 - 3.1) / 0.2 = -2
z2 = (3.3 - 3.1) / 0.2 = 1
Next, we can use a standard normal distribution table or a calculator to find the area between these two z-scores. The area between -2 and 1 is approximately 0.8186 or 81.86%.
Therefore, approximately 81.86% of the pennies will weigh between 2.7 and 3.3g.
b) Similarly, to find the percentage of pennies that weigh between 2.5 and 3.7g, we need to standardize the values and calculate the area between the corresponding z-scores.
z1 = (2.5 - 3.1) / 0.2 = -3
z2 = (3.7 - 3.1) / 0.2 = 3
The area between -3 and 3 encompasses the entire distribution and is equal to 1 or 100%.
Therefore, 100% of the pennies will weigh between 2.5 and 3.7g.
c) To find the percentage of pennies that weigh less than 2.7g, we need to calculate the area to the left of the corresponding z-score.
z = (2.7 - 3.1) / 0.2 = -2
Using a standard normal distribution table or a calculator, we find that the area to the left of -2 is approximately 0.0228 or 2.28%.
Therefore, approximately 2.28% of the pennies will weigh less than 2.7g.
d) To find the percentage of pennies that weigh more than 3.3g, we need to calculate the area to the right of the corresponding z-score.
z = (3.3 - 3.1) / 0.2 = 1
Using a standard normal distribution table or a calculator, we find that the area to the right of 1 is approximately 0.1587 or 15.87%.
Therefore, approximately 15.87% of the pennies will weigh more than 3.3g.
Correct Question :
A group of students weighs 500 US pennies. They find that the pennies have normally distributed weights with a mean of 3.1g and a standard deviation of 0.2g
a) What percentage of pennies will weigh between 2.7 and 3.3g?
b) What percentage of pennies will weigh between 2.5 and 3.7g
c.) What percentage of pennies will weigh less than 2.7g?
d.) What percentage of pennies will weigh more than 3.3g?
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2) Denim jean pants whose regular selling price is Nu 2500 was on sale for Nu 2200. Calculate the discount percent?
a. statistics 201 is a course taught at a university. professor rauch has taught nearly 1,500 students in the course over the past 5 years. you would like to know the average grade for the course.
The information illustrated about the statistics 201 is a sample.
What is a sample?A sample is an analytical subset of a larger population in statistics. Researchers can conduct their studies more quickly and with more manageable data by using samples. If the sample size is large enough, there won't be any bias, but getting such a sample might be costly and time-consuming.
The entire group about whom you want to make conclusions is referred to as a population. The particular group from which you will gather data is known as a sample. The sample size is always smaller than the population as a whole.
Since there are many students, a sample will be used.
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For the following questions, would you collect information using a sample or population
a. statistics 201 is a course taught at a university. professor rauch has taught nearly 1500 students in the course over the past 5 years. you would like to know the average grade for the course
24
-4?
can you help me with this
Answer:
-6
Step-by-step explanation:
24/-4=-6
Answer:
-6
Step-by-step explanation:
Have a good day <3
1. find m 2. state the shortest side
Answer:
a. 72°
b. side DF
Step-by-step explanation:
The base angles of an isosceles triangle are congruent and equal to the complement of half the a.pex angle. The shortest side of the triangle is opposite the smallest angle.
a.∠F = 90° -(36°/2) = 72°
__
b.The smallest angle is 36°. The side opposite that angle is side DF.
_____
Additional comment
The relation we used to find the base angle is based on the fact that the sum of angles in a triangle is 180°. For angle F, with D = F, we have ...
D +F +36° = 180°
2F = 180° -36° . . . . . . substitute D = F, and subtract 36°
F = 90° -(36°/2) . . . . . divide by 2
What is the largest output achieved by the function? At what x-value is it hit (also will mark Brainlest!!!)
Answer:
f(1) = 4
Step-by-step explanation:
Largest output is 4, when x=1.
Answer:
f1 = 4
Step-by-step explanation:
1 1/2 divided by what equals 1
At the beginning of the winter season, Kaleb’s firewood rack held 4,000 lbs of firewood. The weight of firewood decreases by 7.5% each week. Write a function to represent the weight of firewood remaining x weeks after the start of the winter season.
Therefore , f(x) = 4000 (0.925)ˣ is the function
Firewood loses 7.5% of its weight each week. In other words, 92.5% of the original weight of the firewood is still present after one week.
What is function?The function I gave is an illustration of a function that denotes the quantity of firewood that is still available x weeks after the start of the winter season.
A mathematical item called a function accepts an input and creates an output. The number of weeks since the start of the winter season is the input in this scenario, and the output is the weight of firewood still available.
The function can be used to express the weight of firewood left over x weeks after the start of winter:
f(x) = 4000(1 - 0.075)ˣ
Firewood loses 7.5% of its weight each week. In other words, 92.5% of the original weight of the firewood is still present after one week
where x represents how many weeks have passed since the start of the winter season.
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235litre in cubic cm
the one who will first give answer marks as brainliest
To practice for a competition, Maggie swam 940 meters in the pool each day for 2 weeks. How many kilometers did Maggie swim in those 2 weeks? 1 m = 0.001 km
Based on the number of days that Maggie swam and the distance swam everyday, Maggie swam 13.16km
Maggie swam 940 meters each day. She did this for two weeks. The total distance she swam is:
= 940 x 2 x 7 days a week
= 13,160 meters
A meter is 0.001km so 13,160 meters in kilometers would be:
= Number of meters x Conversion factor
= 13,160 x 0.001
= 13.16 km
In conclusion, Maggie swam 13.16 km.
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Rewriting multiplication of a sum or difference as an addition or subtraction problem is known as ______.
Rewriting multiplication of a sum or difference as an addition or subtraction problem is known as the distributive property.
The distributive property allows you to break down a multiplication problem involving a sum or difference into separate addition or subtraction problems. Here's a step-by-step explanation:
Step:1. Identify the sum or difference within the multiplication problem. For example, in the problem (a + b) * c, the sum is (a + b).
Step:2. Apply the distributive property by multiplying each term inside the parentheses by the outside term. In our example, this would be: a * c + b * c.
Step:3. The result is the rewritten problem as an addition or subtraction problem. In this case, it is a * c + b * c.
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The population of center city is modeled by exponential function f, where x is the number of years after year 2015
The population of Center City is modeled by an exponential function, denoted as f(x), where x represents the number of years after the year 2015.
An exponential function is commonly represented by the equation f(x) = a * b^x, where 'a' is the initial value or starting point, 'b' is the base or growth/decay factor, and 'x' represents the variable or number of years in this case.
The population of Center City is modeled by the exponential function f(x), which means that the population can be expressed as a function of the number of years after the year 2015.
To fully understand the characteristics and specifics of the exponential function f(x) and how it models the population of Center City, additional information regarding the values of 'a', 'b', and the specific form of the function is necessary. Without those details, it is not possible to provide a more precise explanation.
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If a = 8 in and b = 15 in what is the length of leg c in a right triangle using the
pythagorean theorem?
See attachment for math work and answer.
What do the parts of the expression of 48 is represent
Therefore the part of expression of 48 represent the price per scarfs .
What is expression?A mathematical expression is a phrase that has a minimum of two numbers or variables and at least one mathematical operation. It is possible to multiply, divide, add, or subtract in math. (Mathematical Operator, Number or Variable, Expression) is the structure of an expression.
Here,
In the given the expression 483, represents the number 0f scarves and 48 represents the price per scarf Buyers are charged shipping fee of $4.75 for each scarf order:
Therefore, from the given we can see the 48 represents the price per scarf.
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You can drive 90 miles on 1/4 of a tank of gas in one hour how far can you drive on one tank of gas?
Answer:
360 miles
Step-by-step explanation:
The distance will be:
= 90 ÷ 1/4
= 90 × 4
= 360 miles.