Answer:
No i don't know needed the point bye
Step-by-step explanation:
6 = 2 - 2x + 10
x = ?
Answer:
3
Step-by-step explanation:
6 = 2 - 2x + 10
6 - 2 = -2x + 10
4 = -2x + 10
4 - 10 = -2x
-6 = -2x
-6/2 = -2x/2
-3 = -x
-3/-1 = -x/-1
3 = x
x = 3
If a new car is valued at $19200 and 8 years later it is valued at $8000, then what is the average rate of change of its value during those 8 years?
Answer: $1400 / year
Step-by-step explanation:
Let's start by finding the difference in the new car and the price 8 years later:
$19200 - $8000 = $11200
This means the car depreciated by $11200 over 8 years. We divide this by the 8 years:
$11200 / 8 years = $1400.
This means the car changed by an average of $1400 each year.
Suppose that a study of elementary school students reports that the mean age at which children begin reading is 5.4 years with a standard deviation of 0.8 years. Step 1 of 2: If a sampling distribution is created using samples of the ages at which 38 children begin reading, what would be the mean of the sampling distribution of sample means? Round to two decimal places, if necessary.
Answer:
According to the Central Limit Theorem, the sampling distribution of sample means would have a mean of 5.4 years.
Step-by-step explanation:
For a normally distributed random variable X, with mean and standard deviation, the sampling distribution of sample means with size n can be approximated to a normal distribution with mean and standard deviation.
As long as n is at least 30, the Central Limit Theorem can also be applied to skewed variables.
We have the following problem:
5.4 years is the average age for the entire population.Based on the Central Limit Theorem, 5.4 years would be the mean of the sampling distribution of sample means.Answer:
Step-by-step explanation:
The mean of the sampling distribution of sample means can be calculated using the formula:
μM = μ
where μ is the population mean and M is the sample mean.
Thus, μM = μ = 5.4 years.
Therefore, the mean of the sampling distribution of sample means would also be 5.4 years.
The x and y intercepts for the linear equation x – 2y = -8 is
Answer:
x- intercept = - 8 , y- intercept = 4
Step-by-step explanation:
to find the x- intercept let y = 0 in the equation and solve for x
x - 2(0) = - 8
x - 0 = - 8
x = - 8 ← y- intercept
to find the y- intercept let x = 0 in the equation and solve for y
0 - 2y = - 8
- 2y = - 8 ( divide both sides by - 2 )
y = 4 ← y- intercept
0; 0.8; 1.6; 2.4;
write down the next 4 numbers in the sequence
Using the pattern, the next 4 numbers in the sequence would be
3.2; 4.0; 4.8; 5.6
How to find the next four termsThe given sequence seems to follow a pattern where each term is obtained by adding 0.8 to the previous term.
hence this is an AP sequence, with a common difference of 0.8, adding 0.8 to each term gives the next consecutive term
2.4 + 0.8 = 3.2
3.2 + 0.8 = 4.0
4.0 + 0.8 = 4.8
4.8 + 0.8 = 5.6
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1. 20% tip on a 30$ haircut
2. $80 gift marked up 60%
3. 7% tax on a $3 soda with an $8 burger
please help me :/
This is due tonight and I am struggling with a couple of questions. This is one. Please help
Answer:
x = 4.2
Step-by-step explanation:
72 + 10x = 114
10x = 114 - 72
10x = 42
x = 42/10
x = 4.2
Answer:
x = 4.2
Step-by-step explanation:
x is equal to 4.2 because ∠PQR and ∠RQS have a sum of 114° so if you subtract 72 from 114 you get 42. Now if you simply divide 42 by 10 you get 4.2.
-3+6 complete it on the number line?
Answer:
it will be 3 on the right side of the number line(positive side)
Use StatKey or other technology to find the regression line to predict Y from X using the following data.
X 10 20 30 40 50 60
Y 111 109 110 94 92 93
Click here to access StatKey.
Round your answer for the intercept to one decimal place and the answer for the slope to two decimal places.
The regression equation is Enter your answer; The regression equation, intercept
+ Enter your answer; The regression equation, slope
X.
The regression equation is Y = 95.0 + 0.84X.The regression line is a mathematical model that is used to predict the value of a dependent variable (Y) based on the value of an independent variable (X).
In this case, the regression line is used to predict Y from X using the following data: X = 10, 20, 30, 40, 50, 60 and Y = 111, 109, 110, 94, 92, 93. By using a regression analysis tool such as StatKey, we can calculate the regression equation that best fits this data. The regression equation is Y = 95.0 + 0.84X, where 95.0 is the intercept and 0.84 is the slope. This equation can be used to make predictions about the value of Y for a given value of X. The rounded answer for the intercept is 95.0 and the rounded answer for the slope is 0.84.
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50 students in the fourth grade class list of their hair and eye colors in the table below are the events green eyes and brown hair independent
Answer:
câu này là 500 nhen
WHAT IS THE PATTERN IN 9:47, 10:21, 10:57, ?, 12:15
11:35 will be the omitted number in the supplied sequence.
Describe a series.A list of components that have been arranged in a sequential fashion, with members coming either before or after, is referred to as a sequence.
The order will be provided as
9:47, 10:21, 10:57, ?, 12:15
The two increases the gap between the two numbers.
Consequently, there will be a 36-second gap between 10:57 and 10:21.
The distance between the following number and 10:57 will then be 38. The following number will be
→ 10: 57 + 00:38
→ 11: 35
Thus, 11:35 will be the following number.
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6th grade math sum1 pls help thanks
Which mixed numbers have 12 as the LCD (lowest common denominator)?
2 11/12
3 1/7
5 3/4
6 4/5
8 38
MARK
The mixed numbers that have 12 as the LCD are 2 11/12 and 6 4/5. All other fractions do not have 12 as the denominator and are not equivalent.
What are mixed numbers?Mixed numbers consist of a whole number and a fractional part. To add or subtract mixed numbers, the fractions must have the same denominator (the bottom number of the fraction).
The LCD (lowest common denominator) is the smallest number that all of the denominators can be divided into evenly. In this case, the LCD is 12.
2 11/12 and 6 4/5 both have 12 as the denominator. The denominator of 11/12 can be divided by 11 and 12, so it is the same as 12/12. The denominator of 4/5 can be divided by 4 and 12, so it is the same as 48/12 (4 x 12 = 48). Therefore, both fractions have the same denominator.
The other fractions do not have 12 as their denominator. 3 1/7 can be divided by 3, 7, and 12, so it is the same as 21/12 (3 x 7 = 21). 5 3/4 can be divided by 4, 5, and 12, so it is the same as 60/12 (4 x 5 = 60). 8 38/47 can be divided by 8, 47, and 12, so it is the same as 376/12 (8 x 47 = 376). Since none of these fractions are equal to 12/12, they are not equivalent to the other two fractions.
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Question :
Which mixed numbers have 12 as the LCD (lowest common denominator)?
2 11/12
3 1/7
5 3/4
6 4/5
8 38/47
Select the correct answer.
If no denominator equals zero, which expression is equivalent to 15/x-6 + 7/x+6?
A.
OB.
OC.
OD.
22 +132
²36
22-48
236
22
C.36
22 +48
²36
The expression in the options which is equivalent to the given expression is D. (22x + 48) / (x² - 36).
Given expression is,
[15 / (x - 6)] + [7 / (x + 6)]
Cross multiplying the two fractional expressions,
= [15 (x + 6) + 7 (x - 6)] / [(x - 6) (x + 6)]
= [15x + 90 + 7x - 42] / [x² - 6²]
= (22x + 48) / (x² - 36)
Hence the equivalent expression is D.
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Suppose there is a simple index of two stocks, stock A and stock B. Stock A opens on Monday with 5000 shares at $2.75 per share. Stock B opens on Monday with 3000 shares at $4.30 per share. Stock A opens on Tuesday at $3.10 per share, and stock B opens on Tuesday at $4.85 per share. Both stocks have the same number of shares that they opened with on Monday. What is the rate of change of this simple index over 1 day?
The rate of change of the simple index over one day is approximately 12.78%.
To calculate the rate of change of the simple index over one day, we need to determine the percent change in the total value of the index between Monday's opening and Tuesday's opening.
On Monday, Stock A has 5000 shares at $2.75 per share, so its total value is:
Total value of Stock A on Monday = 5000 * $2.75 = $13,750
Similarly, on Monday, Stock B has 3000 shares at $4.30 per share, so its total value is:
Total value of Stock B on Monday = 3000 * $4.30 = $12,900
The total value of the index on Monday is the sum of the values of Stock A and Stock B:
Total value of the index on Monday = $13,750 + $12,900 = $26,650
On Tuesday, Stock A opens at $3.10 per share, and Stock B opens at $4.85 per share. Both stocks still have the same number of shares as on Monday.
The total value of Stock A on Tuesday is:
Total value of Stock A on Tuesday = 5000 * $3.10 = $15,500
The total value of Stock B on Tuesday is:
Total value of Stock B on Tuesday = 3000 * $4.85 = $14,550
The total value of the index on Tuesday is the sum of the values of Stock A and Stock B:
Total value of the index on Tuesday = $15,500 + $14,550 = $30,050
To calculate the percent change in the index, we use the formula:
Percent Change = ((New Value - Old Value) / Old Value) * 100
Percent Change = (($30,050 - $26,650) / $26,650) * 100 ≈ 12.78%
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Ms. Traynor's class is taking a field trip to the zoo. The trip will cost $28 for each student. There are 24 students in her class. What is a good estimate for the cost of the students' field trip? Use rounded numbers to find a good estimate. A good estimate for the cost of the trip is Ms. Traynor's class is taking a field trip to the zoo. The trip will cost $28 for each student. There are 24 students in her class. What is a good estimate for the cost of the students' field trip? Use rounded numbers to find a good estimate. A good estimate for the cost of the trip is
Answer:
672
Step-by-step explanation:
28x24= 672
Answer: 20 × 25 = 500 The total cost would be about $500
Step-by-step explanation:
Five less than twice the value of a number is equal to three times the quantity of 4 more than 1/2 the number what is the number let x be the number right and solve an equation to find x show your work.
The value of the number is x = 34.
Let's break down the problem and solve it step by step.
1. "Five less than twice the value of a number": This can be represented as 2x - 5, where x is the number.
2. "Three times the quantity of 4 more than 1/2 the number": This can be represented as 3 * (x/2 + 4).
According to the problem statement, the two expressions are equal. We can set up the equation as follows:
2x - 5 = 3 * (x/2 + 4)
Now, let's solve the equation:
2x - 5 = 3 * (x/2 + 4)
Distribute the 3 to both terms inside the parentheses:
2x - 5 = (3/2)x + 12
Multiply through by 2 to eliminate the fraction:
2(2x - 5) = 2((3/2)x + 12)
4x - 10 = 3x + 24
Next, let's isolate the x term by moving the constant terms to the other side of the equation:
4x - 3x = 24 + 10
Simplify:
x = 34
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what is 1/2 - 3/10 in simplest form
Answer: 1/5
Step-by-step explanation:
What value of b makes the equation true?
-6(b+3)=-8b+5
The vertex form of a function is g(x) = (x - 3)2 + 9. How does the graph of g(x) compare to the graph of the function
Rx) = x2?
O g(x) is shifted 3 units left and 9 units up.
g(x) is shifted 3 units right and 9 units up.
O g(x) is shifted 9 units left and 3 units down.
O g(x) is shifted 9 units right and 3 units down.
Answer:
Its the second choice.
Step-by-step explanation:
g(x) = (x - 3)^2 + 9
The -3 in the parentheses moves the graph of x^2 3 units to the right.
The + 9 moves it upwards 9 units.
During the first couple weeks of a new flu outbreak, the disease spreads according to the equation I(t) = 3900e^0.0514, where I(t) is the number of infected people t days after the outbreak was first identified. Find the rate at which the infected population is growing after 8 days and select the appropriate units.
The rate at which the infected population is growing after 8 days of the outbreak is approximately 1096.57 people per day, as determined by the derivative of the given function with respect to time.
To find the rate at which the infected population is growing after 8 days, we need to take the derivative of the given function I(t) with respect to t:
\(dI/dt = 3900(0.0514)e^(0.0514t)\)
At t=8, the rate at which the infected population is growing is:
\(dI/dt = 3900(0.0514)e^(0.0514*8) = 1096.57\)
Therefore, the rate at which the infected population is growing after 8 days is approximately 1096.57 people per day.
It is important to note that this rate of growth is an instantaneous rate at t=8, and it will likely change as time passes and the outbreak progresses. Furthermore, the rate of growth of the infected population depends on various factors such as the transmission rate of the virus, the effectiveness of preventive measures, and the availability of healthcare resources.
In conclusion, the rate at which the infected population is growing after 8 days of the outbreak is approximately 1096.57 people per day, as determined by the derivative of the given function with respect to time. This result provides insight into the early stages of a flu outbreak, but further analysis is required to understand the longer-term dynamics of the outbreak and the factors that affect the spread of the disease.
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What is the mode?
1 4 4 1 1 0 6 6 6 1
The mode is 1.
It was repeated 4 times whereas 6 was only repeated 3 times, 4 twice, and 0 once.
Answer: 1
The mode is the number that occurs the most within the set of numbers. If the set of numbers is as follows: 1, 4, 4, 1, 1, 0, 6, 6, 6, 1, then the answer is one(1).
However, if the set of numbers appear as follows: 14, 41, 10, 66, 61, then there is no mode.
2. The actual tree on the left is 10 feet tall. The model tree on the right is 8 inches tall. What is the scale factor?
A: 15 B: 112 C: 1/122 D: 1/15
Answer:
D. 1/15
Step-by-step explanation:
Actual tree = 10 ft = 12 × 10 = 120 in.
Model tree = 8 in.
Scale factor = model tree/actual tree
Scale factor = 8/120
Scale factor = 1/15
31% of college students say they use credit cards because of the rewards program. You randomly select 10 college students and ask each to name the reason he or she uses credit cards. Find the probability that the number of college students who say they use credit cards because of the rewards program is (a) exactly two, (b) more than two, and (c) between two and five inclusive. If convenient, use technology to find the probabilities.
The correct answer will be option C which is the number of students between two and five inclusive.
What is probability?Probability is defined as the ratio of the number of favourable outcomes to the total number of outcomes in other words the probability is the number that shows the happening of the event.
Given that:-
31% of college students say they use credit cards because of the rewards program. You randomly select 10 college students and ask each to name the reason he or she uses credit cards.
The total number of students is 10 and the number of students is 31% who say that they use credit cards because of the rewards program.
So 31% of 10 students will be = 10 x 31 / 100 = 3.1
So we can see that the number of the students who say that they use credit cards because of the rewards program is 3.1 which comes under the range of 2 and 3.
Therefore the correct answer will be option C which is the number of students between two and five inclusive.
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What is the y-intercept of the line describe by the equation below? Y=5x-22
Answer:
The y intercept is (0,-22)
Step-by-step explanation:
The y intercept is the value when x =0
Y=5x-22
y = 5*0 -22
y = -22
The y intercept is (0,-22)
if the cafiteria has 80 coustomers on tuesday, which prediction for tues day is not supported by the data in the table
Answer:
Where is the table?
Step-by-step explanation:
What values of b satisfy 3(2b + 3)² = 36?
Answer:
The values of b that satisfy the equation are:
b = (2√3 - 3) / 2
b = (-2√3 - 3) / 2
In other words, b can take the values (2√3 - 3) / 2 or (-2√3 - 3) / 2.
Step-by-step explanation:
To find the values of b that satisfy the equation 3(2b + 3)² = 36, we can solve for b by following these steps:
1. Divide both sides of the equation by 3:
(2b + 3)² = 12
2. Take the square root of both sides:
√[(2b + 3)²] = √12
Simplifying further:
2b + 3 = ±√12
3. Subtract 3 from both sides:
2b = ±√12 - 3
4. Divide both sides by 2:
b = (±√12 - 3) / 2
Simplifying further:
b = (±√4 * √3 - 3) / 2
b = (±2√3 - 3) / 2
Therefore, the values of b that satisfy the equation are:
b = (2√3 - 3) / 2
b = (-2√3 - 3) / 2
In other words, b can take the values (2√3 - 3) / 2 or (-2√3 - 3) / 2.
A 49 -tooth gear on a motor shaft drives a larger gear having 77 teeth. If the motor shaft rotates at 1100 rpm, what is the speed of the larger gear?
Question content area bottom
The speed of the larger gear is ___
(Type a whole number or a decimal.)
Answer:
The speed of the larger gear is 807.2202 rpm. This can be calculated by using the equation speed = (number of teeth on the motor shaft/ number of teeth on the larger gear) x motor shaft speed. In this case, the equation would be 807.2202 rpm = (49/77) x 1100 rpm.
Solve for n.
4.8 = 3n
If necessary explain in the simplest way possible.
The value of n is 1.6 if 4.8=3n by using simplest method.
What is meant by simplest equation?A mathematical equation links the two phrases on either side of the sign. It typically simply has an equal sign and one variable. similar to 2x - 4 = 2. Simple equations are used to demonstrate the relationship between two terms when they are positioned on each side of an equal sign. Simple equations are all used to follow the four mathematical operations of addition, subtraction, multiplication, and division.
By employing the shorthand symbol for "equal to" (=), it ensures that both expressions of the equation are equal. Equations utilize arithmetic operations like addition, subtraction, division, and multiplication to balance the expressions on both sides.
4.8=3n
Dividing on both sides with 3, we get
3n/3=4.8/3
n=1.6
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i need everything answered
Using the circles:
radius - RTdiameter - QTSchord that is not a diameter - PScentral angle - Tminor arc - QPmajor arc - QSPsemicircle - QRSA = 201.06 square inches, C = 50.27 inchesA = 314.16 square meters, C = 62.83 metersmJKP = mJKN = 90° mJLK = 63° and mPLJ + mJLP = 207°How to calculate areas and circumference?A circle with a radius of 8 inches has an area and circumference given by:
A = πr² = π(8²) ≈ 201.06 square inches
C = 2πr = 2π(8) ≈ 50.27 inches
Rounding to the nearest hundredth:
A ≈ 201.06 square inches
C ≈ 50.27 inches
Therefore, the area is approximately 201.06 square inches and the circumference is approximately 50.27 inches.
A circle with a diameter of 20 meters has a radius of 10 meters. The area and circumference are given by:
A = πr² = π(10²) ≈ 314.16 square meters
C = 2πr = 2π(10) ≈ 62.83 meters
Rounding to the nearest hundredth:
A ≈ 314.16 square meters
C ≈ 62.83 meters
Therefore, the area is approximately 314.16 square meters and the circumference is approximately 62.83 meters.
Using these relationships, find the measures of some of the angles:
a) mJKP = mJKN (by vertical angles) and mJKP + mPKL = 90° (by complementary angles), so mJKN + mPKL = 90°.
b) mJKN = mJKP (by vertical angles) and mJKN + mKNM = 90° (by complementary angles), so mJKP + mKNM = 90°.
c) mJLK = mMPL (by alternate interior angles) and mMPL = 63°, so mJLK = 63°.
d) mKNM = 90° - mJKN (by complementary angles). We cannot determine the measure of mJKN.
e) mJLK = mMPL (by alternate interior angles) and mJLR = mJLP (by vertical angles), so:
mJLK + mKLP + mPLJ + mJLP = 360° (by the sum of angles in a quadrilateral)
63° + 90° + mPLJ + mJLP = 360°
mPLJ + mJLP = 207°
f) mJLR = mJLP (by vertical angles) and mKPL = 90°, so:
mJLR + mJLP + mKPL = 180° (by the angles in a triangle)
mJLR + mJLP + 90° = 180°
mJLR + mJLP = 90°
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Image transcribed:
Use the circle below for questions 1-7.
1. Name a radius.
2. Name a diameter.
1.
2.
3.
R
3. Name a chord that is not a diameter.
P
4. Name a central angle.
4.
S
5. Name a minor arc.
5.
6. Name a major arc.
7.
7. Name a semicircle.
For questions 8 and 9, find the area and circumference. Round to the nearest hundredth.
8.
A =
C=
9.
A =
20 m
8 in
C=
10. If m∠MPL = 63°, find each measure.
K
a) mR= =
= m KNM d) 이이
=
b) - =
c) L
=
f) mJLR =
N
M
Gina Wilson (All Things Algebra, LLC), 201