Answer:
-54y+27y²
Step-by-step explanation:
-9y(6-3y)
-9y x 6=-54y
-9y x -3y=27y²
-54y+27y² or
27y²+ -54y
help please help please
Answer:
Angle 1 = 123 degrees
Step-by-step explanation:
Trong đợt xảy ra một loại dịch bênh X ,người ta điều tra ngẫu nhiên 1600 nhười dân ở một vùng thấy có 160 người đã được tiêm vaccine đủ liều và đúng lịch
Answer:
Probability of an event = 1 / 10
Step-by-step explanation:
Given:
Total number of people in particular area = 1,600
Number of people vaccinated = 160
Find:
Probability[people vaccinated]
Computation;
Probability of an event = Number of favorable outcomes / Total number of outcome
Probability of an event = 160 / 1600
Probability of an event = 16 / 160
Probability of an event = 1 / 10
a census reports that the mean retirement age is 68.3 years. in a random sample, the mean retirement age is 65.8 years. what is the mean of 68.3 years?
The mean retirement age in the census report is 68.3 years.
The given information states that the population mean retirement age is 68.3 years, and a random sample of retirement age has a sample mean of 65.8 years. We can use this information to estimate the population mean with a certain level of confidence.
However, the question asks us to find the mean of 68.3 years, which is simply the given population mean. Therefore, we can state that the mean of 68.3 years remains the same, as it is not affected by the sample mean or any other sample statistic.
In other words, the population mean of 68.3 years is a fixed value, and it does not change based on the sample mean or any other sample statistic. Therefore, we can simply state that the mean retirement age is 68.3 years, which is the given information provided in the question.
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If \displaystyle C=G-3FC=G−3F , find the trinomial that represents \displaystyle CC when \displaystyle F=2x^{2}+6x-5F=2x
2
+6x−5 and \displaystyle G=3x^{2}+4G=3x
2
+4
The trinomial that represents C when F = 2x^2 + 6x - 5 and G = 3x^2 + 4 is -3x^2 - 18x + 19.
To find the trinomial that represents C when F = 2x^2 + 6x - 5 and G = 3x^2 + 4, we can substitute these values into the equation C = G - 3F and simplify the expression.
Starting with C = G - 3F, we substitute G = 3x^2 + 4 and F = 2x^2 + 6x - 5:
C = (3x^2 + 4) - 3(2x^2 + 6x - 5)
C = 3x^2 + 4 - 6x^2 - 18x + 15
C = -3x^2 - 18x + 19
Therefore, the trinomial -3x^2 - 18x + 19 represents C in the given equation.
To arrive at this result, we perform the necessary operations of distributing -3 to the terms in 2x^2 + 6x - 5 and simplifying the resulting expression by combining like terms. This yields the trinomial -3x^2 - 18x + 19 as the representation of C.
It is important to note that the coefficients of the resulting trinomial are obtained by multiplying -3 to the coefficients of the terms in F. The constant term in the resulting trinomial, 19, is obtained by subtracting 3 times the constant term in F from the constant term in G.
Therefore, the trinomial -3x^2 - 18x + 19 corresponds to the representation of C in the given equation.
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Complete question: If the value of C is equal to G minus 3 times F, determine the trinomial expression for C squared when F is equal to 2x squared plus 6x minus 5, and G is equal to 3x squared plus 4.
HELP PLEASE, WILL GIVE BRAINLIEST A rectangle has a base of 5 inches and a height of 7 inches. If the dimensions are cut in half, what will happen to the perimeter of the rectangle?
It will be half of the original size.
It will be two times the original size.
It will be one-fourth the original size.
It will be the same as the original size.
Answer: It will be one-fourth (1/4) the original size.
Hope this helps!
Please Rate! It helps me know if I am explaining the answer well enough or not! Thanks!
in order to maintain accuracy, political polling groups must maintain a certain degree of confidence with a small margin of error. five thirty eight is a polling company that wishes to survey a population of people, but maintain a margin of error of 0.05 or less with a 99% confidence level. what is the smallest number of consumers they should survey to guarantee this?
To maintain a margin of error of 0.05 or less with a 99% confidence level, the polling company Five Thirty Eight must survey a minimum of 1068 consumers.
To find the minimum sample size required for a margin of error of 0.05 or less with a 99% confidence level, we can use the formula:
n = (z^2 * p * q) / E^2
where
z = the z-score associated with the desired confidence level (2.58 for 99%)
p = the estimated proportion of the population that has the attribute being measured (0.5 for maximum margin of error)
q = 1 - p
E = the desired margin of error (0.05)
Substituting the values, we get
n = (2.58^2 * 0.5 * 0.5) / 0.05^2
n = 1067.44
Rounding up to the nearest whole number, we get a minimum sample size of 1068 consumers that Five Thirty Eight should survey to guarantee a margin of error of 0.05 or less with a 99% confidence level.
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Please answer this big question nobody ever answers my questions im sad :(
Answer:
Step-by-step explanation:
1.
3,4,5 will make a triangle.
2.
sum of any sides > third side
difference of any two sides < third side
3+4=7>5
4+5=9>3
5+3=8>4
again
4-3=1<5
5-3=2<4
5-4=1<3
so it makes one triangle.
3.
3,4,8
4.
3+4=7 not >7
again
8-4 =4 not <3
so they do not make a triangle.
It might be hard to see but please help me out!
Answer:
X: (-2) (-1) (0) (1) (2)
y: (5) (4) (5) (8) (13)
Step-by-step explanation:
╰(▔∀▔)╯ (─‿‿─) (*^‿^*) ヽ(o^ ^o)ノ (✯◡✯) (◕‿◕) (*≧ω≦*)
A bus travels at a
speed of 58 miles per
hour for 2 hours. How
far does it travel?
There are some questions that have functions with discrete-valued domains (such as day, month, year, etc). For simplicity, we treat them as continuous functions.
• For NAT type question, enter only one right answer even if you get multiple answers for that particular question. • R= Set of real numbers
Q= Set of rational numbers
• Z= Set of integers
N= Set of natural numbers
The set of natural numbers includes 0.
1) Lily and Rita resides at two different locations. They decided to meet some day. Lily and Rita cycled along the roads represented by r1: y = x + 1 and r2 : 3x + y -50 respectively. Find the equation of the straight road (3) that passes through the meeting point of Lily and Rita and is perpendicular to any one of the roads 1 or 2.
1 point
r3x-3y+5=0
r3: 2x+2y=6
□ r3x+y-3=0
r3: 2xy=0
Correct option is: r3: y - y_m = -(x - x_m) .To find the equation of the straight road that passes through the meeting point of Lily and Rita and is perpendicular to either road r1: y = x + 1 or r2: 3x + y - 50, we can use the fact that the product of the slopes of two perpendicular lines is -1.
1. Road r1: y = x + 1
The slope of road r1 is 1 (since it is in the form y = mx + b, where m is the slope). Therefore, the slope of the line perpendicular to r1 is -1/1 = -1.
2. Road r2: 3x + y - 50 = 0
To find the slope of r2, we can rewrite the equation in slope-intercept form: y = -3x + 50. The slope of road r2 is -3. Therefore, the slope of the line perpendicular to r2 is 1/3.
Now, we have two slopes, -1 and 1/3. Let's find the equation of the line passing through the meeting point and having one of these slopes.
Using point-slope form:
For slope -1 (perpendicular to r1), we can use the meeting point coordinates (x_m, y_m) and the slope -1 to find the equation:
y - y_m = -1(x - x_m)
Substituting the meeting point coordinates, the equation becomes:
y - y_m = -(x - x_m)
For slope 1/3 (perpendicular to r2), we can use the meeting point coordinates (x_m, y_m) and the slope 1/3 to find the equation:
y - y_m = (1/3)(x - x_m)
Therefore, the equation of the straight road that passes through the meeting point of Lily and Rita and is perpendicular to either r1 or r2 is:
r3: y - y_m = -(x - x_m) or r3: y - y_m = (1/3)(x - x_m)
In the given answer choices: - r3: x - 3y + 5 = 0 and r3: 2x + 2y = 6 are not equations of lines perpendicular to r1 or r2.
- r3: x + y - 3 = 0 is not an equation of a straight line.
Therefore, the correct option is: r3: y - y_m = -(x - x_m)
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In a school 4/9 are boys. During a school tour 1/3 of the girls took part. If 220 girls did not go,how many boys are in the school?
Answer:
There are 294 boys in the school
Step-by-step explanation:
1/3=220
220*3=660
Total Girls in the school = 660
4/9= boys in school
1=9/9-4/9=5/9
5/9=0.666665
0.666665*660=366.66666=366
660-366=294
Answer:
254?
I think the other guy deserves brainiest
Step-by-step explanation:
Anyone able to answer this?
Answer:
a = 3
b = 3
c = 5
d = 2
Step-by-step explanation:
\(600 = 2 \cdot 2 \cdot 2 \cdot 3 \cdot 5 \cdot 5\\= 2^3 \cdot 3 \cdot 5^2\)
Answer:
a = 3, b = 3, c = 5, d= 2
Step-by-step explanation:
Factor out 600
600 = 6 x 10
6 = 2 x 3
10 = 2 x 5
Since 2, 3 and 5 ae primes, we cannot factor further
So 6 x 10 x 10 becomes
(2 x 3) x (2 x 5) x (2 x 5)
= 2 x 2 x 2 x 3 x 5 x 5
= 2³ x 3 x 5²
Matching this with the given pattern gives
a = 3, b = 3, c = 5 and d = 2
Simplify
1-(cos^2)theta/(sin^2 )theta
A. 1
B. sin^2 theta
C. cos^2 theta
D. tan^2 theta
Sarah bought two t-shirts and one sweatshirt. The t-shirts cost $\$15.22$ each. If Sarah spent a total of $\$67.94,$ how many dollars did the sweatshirt cost
Answer: $37.50
Step-by-step explanation:
Jennifer has a job that pays her $5200 per month. She also has to pay
12% per month in Federal Taxes and 3.5 % per month in State Taxes. If
these are her only deductions, then what is her net pay for the year?
O A. $4,394
B. $26,364
C. $52,728
D. $63,872
Answer:
4394
5200 X 0.12 = 624 --> 5200 - 624 = 4576
5200 X 0.035 = 182
4576 - 182 = 4394
Is 30 a reasonable estimate of a quotient for 91,766 ÷ 288?
answer if you know please
Answer:
300 would be
Step-by-step explanation:
Answer:
No, around 300 would be reasonable.
Step-by-step explanation:
mn/6 + 10; use m = 7, and n = 6
Answer:
2.62500
Step-by-step explanation:
just use a calculator
The value of the expression mn/6 + 10 at m = 7 and n = 6 is 17.
What is an Algebraic expression?An algebraic expression can be obtained by doing mathematical operations on the variable and constant terms.
The variable part of an algebraic expression can never be added or subtracted from the constant part.
The given expression is as follows,
mn/6 + 10
Its value can be found at m = 7 and n = 6 as follows,
mn/6 + 10
= (7 × 6)/6 + 10
= 7 + 10
= 17
Hence, the value of the given expression at m = 7 and n = 6 is 17.
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The difference between the park and house of a student is 1Km 575m. Every day he walks both ways between the park and his house. Find the total distance covered by him in a week's time?
The student covers a total distance of 22.05 kilometers in a week's time, walking between the park and the house each day.
To find the total distance covered by the student in a week's time, we need to calculate the distance covered in one round trip (from the house to the park and back) and then multiply it by the number of round trips in a week.
Given that the difference between the park and house is 1 kilometer and 575 meters, we can convert it to a total distance of 1.575 kilometers.
In a round trip, the student covers twice the distance between the park and the house, which is 1.575 kilometers * 2 = 3.15 kilometers.
Now, we need to determine how many round trips the student makes in a week. Let's assume the student makes one round trip each day.
Since there are 7 days in a week, the total distance covered by the student in a week's time is 3.15 kilometers * 7 = 22.05 kilometers.
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it was due yesterday!!!!!!!!! pls help me!!!!!!!
Answer:
D
Step-by-step explanation:
So sorry for the late response I didn't even see this but it is D
rate of change is the same as slope and in the equation you can see the slope is 3 but in the table it is a little more tricky to find
we use the formula y2-y1/x2-x1 for this
7-2/4-3
5/1
5
so the slope or rate of change is 5
I'll give you brainlist if u help :)A certain culture of yeast increases by 50% every three hours. A scientist places 9 grams of the yeast on a culture dish. write the explicit and recursive formulas for the geometric sequences formed by the growth of the yeast.
Answer:
pleasee reply me ...
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also h*t and s**y ..
Answer:
plz mark me as a brainelist
hope it helps you
10. Solve the equation by completing the square. Round to the nearest hundredth if necessary. x²-3x - 3=0
-3.75, 6.75
2.72,0.28
0.87, 2.29
3.79,-0.79
The roots of the equation \(x^{2}\)-3x-3=0 by completing the square method are 3.79 and -0.79.
Given that the equation is \(x^{2}\)-3x-3=0.
We are required to find the roots of the equation by completing the square method.
Equation is basically the relationship between two or more variables that are expressed in equal to form. It may be linear equation, quadratic equation,cubic equation and many more depending on the power of the variables that are present in the equation.
The equation is \(x^{2}\)-3x-3=0.
\(x^{2}\)-3x=3
\((x+3/2)^{2}\)=-(c-\(b^{2}\)/4)
So,
\((x-3/2)^{2}\)=-[-3-\((-3)^{2}\)/4]
\((x-3/2)^{2}\)=-[-3-9/4]
\((x-3/2)^{2}\)=21/4
x-3/2=±\(\sqrt{21}\)/2
x=(\(\sqrt{21}\)+3)/2,(-\(\sqrt{21}\)+3)/2
x=(4.58+3)/2, (-4.58+3)/2
x=7.58/2, -1.58/2
x=3.79,-0.79
Hence the roots of the equation \(x^{2}\)-3x-3=0 by completing the square method are 3.79 and -0.79.
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Answer:
by completing the square method the answer is 3.79 and -0.79.
Step-by-step explanation:
above
What is equivalent ratio in lower terms of 55:30
Answer:
11/6
Step-by-step explanation:
Answer:
the simplest form is 11/6
In which quadrant is the number -14 - 5i located on the complex plane? a) First quadrant b) Second quadrant c) Third quadrant d) Fourth quadrant
The number \(-14 - 5i\) is located in the third quadrant.
The complex plane is a coordinate system in which complex numbers are represented by points, with the real part of the number corresponding to the horizontal axis and the imaginary part corresponding to the vertical axis. Quadrants in the complex plane are similar to those in the Cartesian coordinate system, with the first quadrant consisting of positive real and imaginary parts, the second quadrant having negative real parts and positive imaginary parts, the third quadrant having negative real and imaginary parts, and the fourth quadrant having positive real parts and negative imaginary parts.
The number \(-14 - 5i\) has a negative real part (\(-14\)) and a negative imaginary part (\(-5i\)). According to the properties of quadrants in the complex plane, this number is located in the third quadrant, where both the real and imaginary parts are negative. Therefore, the correct answer is c) Third quadrant.
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PLEASE HELP ASAP! VERY MUCH APPRECIATED
A small business owner contributes $2,000 at the end of each quarter to a retirement account that earns 10% compounded quarterly. (a) How long will it be until the account is worth at least $150,000? (Round your answer UP to the nearest quarter.) 43 quarters (b) Suppose when the account reaches $150,000, the business owner increases the contributions to $4,000 at the end of each quarter. What will the total value of the account be after 15 more years? (Round your answer to the nearest dollar.) $
After 15 more years of contributions of $4,000 at the end of each quarter, the retirement account will be worth approximately $760,514.47.
To calculate this, we need to use the formula for the future value of a lump sum. A lump sum is a one-time payment made at the beginning or end of a specific period. In this case, we're looking at the future value of the retirement account after 15 more years of contributions.
Using the given information, we can plug in the values and solve for FV:
PV = $150,000
Pmt = $4,000
r = 10%
n = 4 (since interest is compounded quarterly)
t = 15 years
First, we need to calculate the future value of the current investment of $150,000:
FV1 = $150,000 x (1 + 0.1/4)⁴ ˣ ¹⁵ = $548,534.24
Then, we can calculate the future value of the quarterly contributions of $4,000 over 15 years:
FV2 = $4,000 x [(1 + 0.1/4)⁶⁰ - 1] / (0.1/4) = $211,980.23
Finally, we can add FV1 and FV2 to get the total future value of the retirement account after 15 more years:
Total FV = FV1 + FV2 = $548,534.24 + $211,980.23 = $760,514.47
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2. Yummy Foods Fast is a meal kit delivery service that costs $30 per month after an initial membership fee of $50. What is the total cost of the meal kit delivery service after 5 months?
Answer:
$200
Step-by-step explanation:
30 * 5=150 +50=200
What is the value of x?
40
550
A. 1059
B. 75°
C. 850
D. 95°
Answer:
the answer is 85° because all angles in a triangle add up to 180
so u add them both up, subtract from 180 n u get 85
Answer:
C because a triangle angles must add up to 180
In the expression 30+40+70, Jillian added 30 and 40 and then 70, while Samuel added 30 and 70 and then 40. Who is correct? Explain your reasoning
As per the mathematical operation both Jillian and Samuel are correct.
Given expression = 30+40+70,
The methodology by Jillian = added 30 and 40 and then 70
The methodology by Samuel = added 30 and 70 and then 40.
Determining the result of the given equation:
30 + 40 + 70
= 140
Reviewing the operations of both Jillian and Samuel
Jillian
He added 30 and 40 and then 70:
30 + 40 = 70
70 + 70 = 140
Samuel
He added 30 and 70 and then 40
30 + 70 = 100
100 + 40 = 140
The result of both mathematical operations is 140. Thus, it can be stated that both are correct.
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Students arrive at the Administrative Services Office at an average of one every 12 minutes, and their requests take on average 10 minutes to be processed. The service counter is staffed by only one clerk, Judy Gumshoes, who works eight hours per day. Assume Poisson arrivals and exponential service times. Required: (a) What percentage of time is Judy idle? (Round your answer to 2 decimal places. Omit the "%" sign in your response.) (b) How much time, on average, does a student spend waiting in line? (Round your answer to the nearest whole number.) (c) How long is the (waiting) line on average? (Round your answer to 2 decimal places.) (d) What is the probability that an arriving student (just before entering the Administrative Services Office) will find at least one other student waiting in line? (Round your answer to 3 decimal places.)
The probability that an arriving student will find at least one other student waiting in line is approximately 0.167.
To solve this problem, we'll use the M/M/1 queueing model with Poisson arrivals and exponential service times. Let's calculate the required values: (a) Percentage of time Judy is idle: The utilization of the system (ρ) is the ratio of the average service time to the average interarrival time. In this case, the average service time is 10 minutes, and the average interarrival time is 12 minutes. Utilization (ρ) = Average service time / Average interarrival time = 10 / 12 = 5/6 ≈ 0.8333
The percentage of time Judy is idle is given by (1 - ρ) multiplied by 100: Idle percentage = (1 - 0.8333) * 100 ≈ 16.67%. Therefore, Judy is idle approximately 16.67% of the time. (b) Average waiting time for a student:
The average waiting time in a queue (Wq) can be calculated using Little's Law: Wq = Lq / λ, where Lq is the average number of customers in the queue and λ is the arrival rate. In this case, λ (arrival rate) = 1 customer per 12 minutes, and Lq can be calculated using the queuing formula: Lq = ρ^2 / (1 - ρ). Plugging in the values: Lq = (5/6)^2 / (1 - 5/6) = 25/6 ≈ 4.17 customers Wq = Lq / λ = 4.17 / (1/12) = 50 minutes. Therefore, on average, a student spends approximately 50 minutes waiting in line.
(c) Average length of the line: The average number of customers in the system (L) can be calculated using Little's Law: L = λ * W, where W is the average time a customer spends in the system. In this case, λ (arrival rate) = 1 customer per 12 minutes, and W can be calculated as W = Wq + 1/μ, where μ is the service rate (1/10 customers per minute). Plugging in the values: W = 50 + 1/ (1/10) = 50 + 10 = 60 minutes. L = λ * W = (1/12) * 60 = 5 customers. Therefore, on average, the line consists of approximately 5 customers.
(d) Probability of finding at least one student waiting in line: The probability that an arriving student finds at least one other student waiting in line is equal to the probability that the system is not empty. The probability that the system is not empty (P0) can be calculated using the formula: P0 = 1 - ρ, where ρ is the utilization. Plugging in the values:
P0 = 1 - 0.8333 ≈ 0.1667. Therefore, the probability that an arriving student will find at least one other student waiting in line is approximately 0.167.
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the value of 2 in 204.75 is how many times the value of 2 in 103.52
Answer:
1000.
Step-by-step explanation:
The Value of the 2 in 204.75, is 200.
The Value of the 2 in 103.52 is 0.02.
So to make the 0.02 become 200, you have to move the decimal point 3 spaces to the right.
Therefore, the 2 in 204.75 is 1000 times greater than the value of the 2 in 103.52.
I hope this helps!