True or False: A sector of a circle with a measure of 36° and radius of 12 cm has an arc length of about 7.5 cm O True O False
Answers
The sector of a circle with a measure of 36° and radius of 12 cm has an arc length of about 7.5 cm
A circle is the locus of a point such that the distance from the fixed point is constant.
The perimeter of a sector is given by:
Perimeter = (θ/360) * 2πr
Where θ is the central angle, r is the radius of the circle
Given a radius of 12 cm and angle of 36°:
The arc length = (36/360) * 2π(12) = 7.5 cm
Hence the sector of a circle with a measure of 36° and radius of 12 cm has an arc length of about 7.5 cm
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Related Questions
HELP PLEASE this is confusing anything can help
Answers
Answer:
5/2
Step-by-step explanation:
Because you go up 5 and over to the RIGHT 2. going to the right makes it positive and you have to use rise over run which means the 5 is over the 2
Can someone help me with this? Thank you so much! I mark as brainliest :))
Answers
Answer:
x = 5 root 3
y = 30
z = 10
Step-by-step explanation:
The triangle has a right angle of 90° and a 60° angle.
The third angle must have measure 30° since 180° - 90° - 60° = 30°.
We have a 30-60-90 right triangle.
In a 30-60-90 the ratio of the lengths of the sides is:
short leg : long leg : hypotenuse
1 : root 3 : 2
The long leg is root 3 times the short leg.
The hypotenuse is 2 times the short leg.
short leg: 5
long leg: 5 * root 3 = 5 root 3
long leg: 5 * 2 = 10
x = 5 root 3
y = 30
z = 10
In a random sample of 60 students in first grade, the mean hours of sleep per night was 9.6 with a
standard deviation of 0.51. In a random sample of 40 students in 12th grade, the mean hours of sleep per
night was 7.2 with a standard deviation of 0.62.
Which interval is a 99% confidence interval for the difference between the mean hours of sleep?
O (2.36 h, 2. 44 h)
O (2. 19 h, 2.61 h)
O (2. 10 h, 2. 70 h)
O (2.29 h, 2.51 h)
Answers
Answer:
c is your answer
Step-by-step explanation:
Which statements are correct? Check all that apply.?
The rate of change is 4.
The rate of change is 1.
The rate of change is 4/1.
The plant grows 4 cm in 1 week.
The plant grows 1 cm in 4 weeks.
Answers
Answer:
A C D
Step-by-step explanation:
Answer:
Step-by-step explanation:
it's A,C,D
When a certain drug is administered to a patient, the number of milligrams remaining
in the patient's bloodstream after t hours is D(t) = 60e^-0.15t
a. How many milligrams of the drug is administered to the patient initially?
b. How many milligrams of the drug remain in the patient in the patient's
bloodstream after 3 hours?
c. Draw a graph of D(t)? (graphing paper)
Answers
a. At initially 60 milligrams of the drug administered to the patient
b. After 3 hours, 38.257 milligrams of the drug is administered to the patient
the patient's bloodstream after t hours is given by,
\(D(t) = 60ex^{-0.15t}\)
At initially, t = 0
\(D(0) = 60e^{-0.15(0)}\\=60 milligrams\)
After 3 hours, substitute t = 3
\(D(3) = 60e^{-0.15(3)}\\\\= 60e^{-0.45}\\\\=38.257 milligrms\)
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pls help in the next 2 mins!! 12/2*-5
Answers
Answer:
-30
Step-by-step explanation:
I dont have an explanation
need answers ASAP. (x + 3)^2 = 12 ?
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5
Enter the correct answer in the box.
Solve the quadratic equation by completing the square.
2x² + 12x = 66
Fill in the values of a and b to complete the solutions.
x=a-√b
x=a+√b
Answers
The values of a and b are a = -3 and b = 42. The solutions for x can be written as:
x = -3 - √42
x = -3 + √42
To solve the quadratic equation 2x² + 12x = 66 by completing the square, we need to follow these steps:
Step 1: Move the constant term to the right side:
2x² + 12x - 66 = 0
Step 2: Divide the equation by the leading coefficient (2):
x² + 6x - 33 = 0
Step 3: To complete the square, we take half of the coefficient of x, square it, and add it to both sides of the equation:
x² + 6x + (6/2)² = 33 + (6/2)²
x² + 6x + 9 = 33 + 9
x² + 6x + 9 = 42
Step 4: Rewrite the left side as a perfect square:
(x + 3)² = 42
Step 5: Take the square root of both sides:
√(x + 3)² = ±√42
x + 3 = ±√42
Step 6: Solve for x:
x = -3 ± √42.
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identify the number that does not belong with the other three explain your reasoning -10 over to -13.4 √ 18 + 22.77777....
Answers
√18
1) Looking at the numbers of that expression
\(\frac{-10}{-13.4}\text{ }\sqrt{18}+\text{ 22.7777}\ldots\)So we have two Rational numbers and one Irrational, the only one that does not belong is, therefore, the Irrational one
Since √18 can't be written as a ratio since 18 is not a perfect square. There is not a rational number as the result of that radical
22.777....can be written as a ratio
And -10/-13.4 can be written as a ratio as well.
Answer:
A
Step-by-step explanation:
What number can be placed in the box to make this statement true?
If +7=10, then 10-7 = 0.
02
O 3
04
O 5
Answers
Answer: the number that can be placed in the box to make the statement true is 3.
Step-by-step explanation:
To make the statement true, we need to find a number that, when added to 7, equals 10. From the given options, the number that satisfies this condition is 3.
If we substitute 3 for the box in the statement, it becomes:
If +7=10, then 10-7=3.
3 6 9 12 15 18 21 24 27 30 is odd or even numbers?
Answers
Answer: Half of them are even and half of them are odd.
Step-by-step explanation:
The even numbers are 6, 12, 18, 24, and 30. An even number is defined as a number that is divisible by 2, meaning it has no remainder when divided by 2. For example, 6 divided by 2 equals 3 with no remainder, so 6 is even.
The odd numbers are 3, 9, 15, 21, and 27. An odd number is defined as a number that is not divisible by 2, meaning it has a remainder of 1 when divided by 2. For example, 9 divided by 2 equals 4 with a remainder of 1, so 9 is odd.
Therefore, out of the given numbers, half of them are even and half of them are odd.
________________________________________________________
In a newspaper, it was reported that yearly robberies in Springfield were down 40% to 126 in 2013 from 2012. How many robberies were there in Springfield in 2012?
Answers
Answer:
210
Step-by-step explanation:
210-40% is 126
Median of 5,4,6,3,4?
Answers
Answer:
4
Step-by-step explanation:
3, 4, 4, 5, 6
Answer:
4
Step-by-step explanation:
Sort values from smallest to largest: 3, 4, 4, 5, 6
Find the center index value:
(N) = 5
Center index = \(\frac{(N+1)}{2}\)
Center index = 3
The median is the 3rd value, which is 4.
Hope that this helps!
Elmo made a 65 potholders each pot holder cost him $1.65 to make if he sells each pot holder for $2.12 how many profit will he make?
Answers
Answer:
Step-by-step explanation:
$2.12 - $1.65 = $0.47
$0.47 x 65 = $30.55 profit.
This is an exercise in the formula to calculate the profits obtained from the sale of a product, it is an essential tool in the management of any business. By knowing the profits obtained from the sale of a product, business owners and managers can make informed decisions and adjust their business strategies to maximize their profitability.
Profit is calculated by subtracting the total costs of production from the total revenue earned from the sale of a product. Total production costs include not only the direct costs associated with manufacturing the product, but also indirect costs, such as advertising and marketing costs, the cost of packaging materials, and other overhead.
The total income obtained from the sale of a product is the product of the number of units sold by the sale price per unit. It is important to remember that the selling price per unit must be sufficient to cover both the direct and indirect costs of production, and to provide a reasonable profit.
Once the profit earned from the sale of a product has been calculated, business owners and managers can use this information to improve their profitability. If profits are low, they might consider lowering production costs, raising the selling price, or finding ways to sell more units. On the other hand, if profits are high, they might consider increasing their investment in advertising and marketing to attract more customers and expand their business.
In addition, profit calculation can also help business owners and managers assess the feasibility of launching a new product or expanding into new markets. By calculating total production costs and potential total revenue, they can determine if the new product or market is profitable and make informed decisions about whether to proceed with the launch or expansion.
In order for us to calculate Elmo's profit, we need to determine how much he spent to make the potholders and how much he will earn from selling them.
The total cost of making the handles is the product of the number of handles times the cost per unit:
Total cost = 65 potholders × $1.65/potholder = $107.25
The total revenue from selling the handles is the product of the number of handles times the selling price per unit:
Total revenue = 65 potholders x $2.12/potholder = $137.8
Elmo's profit is the difference between total revenue and total cost:
Profit = Total Revenue - Total Cost
Profit = $137.8 - $107.25 = $30.55
Profit = $30.55
Elmo will make a profit of $30.55 by selling 65 potholders.
What is the measure of angle AED?
Answers
Answer:
Step by step explanation:
well this is simble you just do it
An advertiser claims that 80% of people stream their TV, 10% have cable, and the rest do not watch TV. To evaluate this claim, they take a sample and calculate a test statistic of
. If their rejection region is, what would their conclusion be?
Answers
The conclusion that they would arrive at based on the rejection region would be to reject the null hypothesis.
What is the rejection region?This is the region that tells us that we are not to accept the null. The conclusion would be to reject the null.
This happens when the rejection region is found to be around the area that is in the critical value.
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We have 2 squares. One square is shaded 2/12 and the other shaded square in the diagram is 2/15 shaded. How much of the total diagram is shaded?
A.0.148
B.0.148 repeated
C. 0.3
D.0.3 repeated
Answers
Answer: The answer to your question is C. Brainliest?
Step-by-step explanation:
For the first square, we can multiply both the numerator and denominator by 5 to get an equivalent fraction with a denominator of 60:
2/12 = (2 x 5) / (12 x 5) = 10/60
For the second square, we can multiply both the numerator and denominator by 4 to get an equivalent fraction with a denominator of 60:
2/15 = (2 x 4) / (15 x 4) = 8/60
Now, we can add the two fractions:
10/60 + 8/60 = 18/60
Simplifying this fraction by dividing both numerator and denominator by 6, we get:
18/60 = 3/10
Therefore, the total shaded area in the diagram is 3/10 or 0.3 in decimal form.
The answer is C. 0.3.
in a large metropolitan area, past records revealed that 30 percent of all the high school graduates go to college. from 10 graduates selected at random, what is the expected number of graduates will not go to college?
Answers
Step 1
Given;
\(\begin{gathered} p=Pr\text{ success trial=}\frac{30}{100}=0.3 \\ q=Pr\text{ no success trial=1-q=1-0.3=0.7} \\ x=10 \end{gathered}\)Step 2
State the expected value formula
\(Expected\text{ number=xq=0.7}\times10=7\)Answer;
\(7\)In the figure below, point O is the center of the circle and mRQ=35° . What is m∠POQ ? A. 125° B. 135° C. 70° D. 145°
Answers
Answer:
Step-by-step explanation:
A. 125
17. Brendan works as a car salesman. He earns a salary of $1,000 per month, plus a commission of 3% on all sales. If he sold $250,000 worth of cars in May, what would his total earning be for the
month?
Answers
Answer:
His total earning for the month would be $8,500.
Step-by-step explanation:
In order to calculate the total earnings for the month, you have to find the 3% of the amount of the sales and add the monthly salary:
Monthly earnings=($250,000*3%)+$1,000
Monthly earnings=$7,500+$1,000
Monthly earnings=$8,500
According to this, the answer is that his total earning for the month would be $8,500.
Answer:
The Answer Is $8,500
Step-by-step explanation:
I just took the test
The product of two numbers is 1576. if one number is 63, what will the other number be?
Answers
Answer:
25.0158730
Step-by-step explanation:
a product is when you multiply two numbers like 2x5 gets you a product of 10 so,
reverse operations,
1576/63 = 25
A used book costs $17 less than the same book new. Theused book costs $9. Write and
solve an equation to find the cost c of the new book cost.
Answers
Answer:
$26
Step-by-step explanation:
17+9=26
A cognitive psychologist was interested in the ability of men and women to multitask-a cog- nitive skill thought to engage short-term or working memory. The psychologist observed a sample of 5 men (n = 5] and 8 women (n = 8] and measured the number of tasks they could accurately complete within a short time frame. He found that men completed 2.3 tasks on average (M = 2.3), whereas women completed 4.5 tasks on average (M = 4.5). What is the weighted mean for both samples? Hint: The overall mean is not 3.4 tasks.
Answers
The weighted mean for both samples is 6.98 if the psychologist observed a sample of 5 men (n = 5] and 8 women (n = 8]
What is mean?It is defined as the single number that represents the mean value for the given set of data or the closed value for each entry given in the set of data.
We have:
Number of men = 5
Number of women = 8
The weighted factor for men = 2.3
The weighted factor for women = 4.5
The weighted mean = (5×2.3 + 8×4.5)/(2.3+4.5)
= (11.5+36)/6.8
= 47.5/6.8
= 6.98
Thus, the weighted mean for both samples is 6.98 if the psychologist observed a sample of 5 men (n = 5] and 8 women (n = 8]
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You are asked to examine a t-shirt that was worn when someone was suspected to have fired a gun. The
detective wants to see if there is gunshot residue on it. Which microscope will you use for this task? SOMEONE PLZZZZ HELP ME ON THIS!
Answers
Answer:
The scanning electron microscope
Step-by-step explanation:
The scanning electron microscope can determine the proximity to a discharging firearm and/or the contact with a surface exposed to GSR
Select all the correct locations on the graph
If we draw lines to join each given point to the origin, identify the points whose corresponding line has a slope that is an integer value.
(2,8)
(3,9)
(4,8)
(5,8)
(6,7)
(7,6)
Answers
(2, 8) - has a slope of 4
(4, 8) - has a slope of 2
(5, 8) - has a slope of 8/5
(7, 6) - has a slope of 6/7
Points (3,9) and (6,7) do not have slopes that are integer values.
I NEED HELP ASAP PLEASE
Answers
why is 3/4 and 9/12 equivalent
Answers
Answer:
It is because 3/4 is 75% and so is 9/12. If you divide 3/4, it will equal to 75%
Step-by-step explanation:
Answer:So we know that 3/4 is equivalent to 9/12, because 3×12=36 and 4×9=36. A simple way to look at how to check for equivalent fractions is to do what is called “cross-multiply”, which means multiple the numerator of one fraction by the denominator of the other fraction.
Step-by-step explanation:
I dance I sing I am perfect I am I am a believer that I am a discoverer. PLEASE ANSWER I'LL MARK AND BRAINLIEST
Answers
Answer:
not sure if its a song or not but you do you, gg <3
Answer:
YAZZ You are amazing :> remind yourself everyday!!!
A 2015 Gallup poll of 1,627 adults found that only 22% felt fully engaged with their mortgage provider.
What is the sample size? Give only the number:
The margin of error for this data set is 2.5%. What is the 95% confidence interval for those who say they felt fully engaged with their mortgage provider (rounded to 1 decimal place)?
Answers
The sample size for the Gallup poll is 1,627 adults. The 95% confidence interval for those who say they felt fully engaged with their mortgage provider is approximately 22.0% (rounded to 1 decimal place).
To calculate the 95% confidence interval, we need to consider the margin of error. The margin of error is given as 2.5%, which means that we need to account for plus or minus 2.5% around the observed proportion of 22%.
First, let's calculate the margin of error:
Margin of Error = 2.5% of 22% = 0.025 * 22% = 0.0055
Next, we can calculate the lower and upper bounds of the confidence interval:
Lower Bound = 22% - Margin of Error = 22% - 0.0055 = 21.995% ≈ 22.0%
Upper Bound = 22% + Margin of Error = 22% + 0.0055 = 22.005% ≈ 22.0%
Therefore, the 95% confidence interval for those who say they felt fully engaged with their mortgage provider is approximately 22.0% (rounded to 1 decimal place).
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Which of the following is the equation of a line with a slope of -5/9
Answers
Answer:
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Step-by-step explanation:
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