Answer:
(-2x^2-3x+4)+(-4x^2+x-2)
some simple addition
-6x^2-2x+2
C
Hope This Helps!!!
help plz i’ll give extra points
Answer:
b) unbalanced force
Step-by-step explanation:
Both sides are unequal so its ubalanced
The Vertical position y (in feet) of a rock T seconds after it was dropped from a Cliff is given by the formula y= -60tsquared +4t+380. The base of a Clift corresponds to y=0 after how many seconds with a rock hit the ground at the base of the Cliff
Answer:
2.48 seconds
Step-by-step explanation:
The given function is
\(y=-60t^2+4t+380\)
When \(y=0\) the ball will be at the ground
\(0=-60t^2+4t+380\)
\(\Rightarrow t=\dfrac{-4\pm \sqrt{4^2-4\left(-60\right)\times 380}}{2\left(-60\right)}\)
\(\Rightarrow t=-2.48,2.55\)
So, the time taken by the rock to hit the ground is \(2.48\ \text{seconds}\).
Al Barkley is single and earns $67,000 in taxable income. He uses the following tax rate schedule to calculate the taxes he owes. What is Al's average tax rate
Al Barkley's average tax rate can be determined using the provided tax rate schedule and his taxable income of $67,000.
To calculate Al's average tax rate, we need to determine the total amount of taxes he owes and divide it by his taxable income.
Using the provided tax rate schedule, we can find the tax owed for each income bracket. However, since the specific tax rate schedule is not provided, I will provide an example based on the 2021 tax rate schedule for single individuals in the United States.
Lets assume the tax rates are as follows:
10% on the first $9,950 of taxable income
12% on the income between $9,951 and $40,525
22% on the income between $40,526 and $86,375
24% on the income between $86,376 and $164,925
... and so on
To calculate the total tax owed, we determine the tax for each income bracket and sum them up. For example, if Al's taxable income is $67,000, we calculate the tax as follows:
Tax on the first $9,950 (10%): $9,950 * 0.10 = $995
Tax on the income between $9,951 and $40,525 (12%): ($40,525 - $9,951) * 0.12 = $3,741.48
Tax on the income between $40,526 and $67,000 (assumed rate): ($67,000 - $40,526) * tax rate = $X (unknown)
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What is the measure of ZDEF?
Answer:
105.....................
mike's cactus was 50 inches tall when he planted it in his yard. The cactus plant grew 1 and 3/4 inches per year . The cactus plant is now 55 and 1/4 inches tall
how many years ago did mike plant the cactus plant?
Answer:
5
Step-by-step explanation:
Which description is paired with its correct expression?
seven less than the quotient of two and a number squared, increased by six; 7-2/n^2+6
nine times the difference of a number cubed and three; 9(n^3-3)
eight more than the quotient of a number squared and four, decreased by seven; 8+4/n^2-7
twice the difference of a number cubed and eight; 2n^3-8
Answer:
nine times the difference of a number cubed and three; 9(n^3-3)
The description is paired with its correct expression is
nine times the difference of a number cubed and three; 9(n³-3)
What is Expression?In mathematics, an expression is a phrase that has at least two numbers or variables and at least one math operation. Addition, subtraction, multiplication, or division are all examples of math operations. An expression's structure is as follows:
(Number/variable, Math Operator, Number/variable) is an expression.
We have,
7 less than the quotient of two and a number squared increased by six
7 - (2/n²) + 6
The Correct Expression is -7 + (2/n²) + 6
2. nine times the difference of a number cubed and three; 9(n³-3)
The Expression is Correct.
3. 8 more than the quotient of a number squared and four, decreased by seven; 8 + (4 /n²) - 7
The Correct Expression is 8 + (n²/4) - 7.
4. twice the difference of a number cubed and eight; 2 n³- 8
The correct expression is 2( n³- 8)
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A right triangle has one leg that is 12 units long and a hypotenuse that is 15 units long. Find the length of the other leg.
Answer:
9
Step-by-step explanation:
let's assume ;
12=a
15=c
?=b
so;
a2+b2=c2
(12)2+b2=(15)2
144+b2=225
b2=225-144
b2=81 (square root both sides)
You'll get
b=9
NB; 2 is used as squared
Answer:
ITS 9
Step-by-step explanation:
Trust me i just finished the quiz (credit to dude on top)
A new computer store opened recently. There are several sales associate positions that pay an hourly rate of $8. 25 plus a two percent commission of the total weekly sales. Based on an expected weekly average of $8800 of sales, write an equation that gives the gross weekly pay ( p ) if you work x hours per week.
To calculate the gross weekly pay (p) for a sales associate who works x hours per week, we need to consider the hourly rate and the commission based on total weekly sales.
The hourly rate is $8.25, and the commission is two percent of the total weekly sales. The expected weekly average of sales is $8800.
Let's break down the components of the gross weekly pay:
Hourly pay: The hourly rate is $8.25, so the hourly pay is calculated as $8.25 * x.
Commission: The commission is two percent of the total weekly sales. Two percent of $8800 is (0.02 * $8800), which equals $176.
To calculate the gross weekly pay, we need to add the hourly pay and the commission:
Gross weekly pay (p) = Hourly pay + Commission
= $8.25x + $176
Therefore, the equation that gives the gross weekly pay (p) in terms of the number of hours worked (x) is:
p = $8.25x + $176.
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What is the equation of the line that passes through the points (-2,10) and (-9,-5)? Write your answer in slope intercept form
\((\stackrel{x_1}{-2}~,~\stackrel{y_1}{10})\qquad (\stackrel{x_2}{-9}~,~\stackrel{y_2}{-5}) \\\\\\ \stackrel{slope}{m}\implies \cfrac{\stackrel{rise} {\stackrel{y_2}{-5}-\stackrel{y1}{10}}}{\underset{run} {\underset{x_2}{-9}-\underset{x_1}{(-2)}}} \implies \cfrac{-15}{-9 +2} \implies \cfrac{ -15 }{ -7 } \implies \cfrac{ 15 }{ 7 }\)
\(\begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-\stackrel{y_1}{10}=\stackrel{m}{ \cfrac{ 15 }{ 7 }}(x-\stackrel{x_1}{(-2)}) \implies y -10 = \cfrac{ 15 }{ 7 } ( x +2) \\\\\\ y-10=\cfrac{ 15 }{ 7 }x+\cfrac{ 30 }{ 7 }\implies y=\cfrac{ 15 }{ 7 }x+\cfrac{ 30 }{ 7 }+10\implies {\Large \begin{array}{llll} y=\cfrac{ 15 }{ 7 }x+\cfrac{100}{7} \end{array}}\)
what is m∠2 if m∠6 = 120°?
Answer:
I love ur pfp
Step-by-step explanation:
ANSWER: m∠2 = 120°, m∠3 = 60°; Sample answer: ∠1 and ∠2 are alternate exterior angles, so they have the same measure. ∠2 and ∠3 are supplementary. So, m∠3 = 180° – 120° or 60°.
4PLEASE HELP ME THIS IS URGENT I WILL GIVE BRAINLIEST
Answer:
9.3 ft
Step-by-step explanation:
there are between 24-40 students in a class
the ratio of boys to girls are 4:7
how many students are in the class?
Answer:
33
Step-by-step explanation:
the ratio "parts" (4&7) total to 11 so the number of students must be a multiple of 11. 33 is the only multiple of 11 that falls between 24 and 40.
HOPE THIS HELPS!!!
You are given the distribution of ages of students and they inform you that the population mean age of students is 21.3 years with a population standard deviation of 10.7 years. What would be the sampling distribution of the mean be in this case
The sampling distribution of the mean in this case would be approximately normal with a mean of 21.3 years and a standard deviation of 1.90 years.
In statistics, the sampling distribution of the mean refers to the distribution of sample means that would be obtained if multiple random samples were taken from the same population. The mean of the sampling distribution is equal to the population mean, while the standard deviation is equal to the population standard deviation divided by the square root of the sample size.
In this case, since the population mean age is 21.3 years and the population standard deviation is 10.7 years, the mean of the sampling distribution would also be 21.3 years. The standard deviation of the sampling distribution can be calculated by dividing the population standard deviation (10.7 years) by the square root of the sample size. However, since the sample size is not provided in the question, it is not possible to determine the exact standard deviation of the sampling distribution.
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Identify all the key features of the following quadratic function.
The key features of the function are
Axis of symmetry: x = -2Domain: -∝ < x < ∝Range: y ≥ - 6Vertex = (-2, 6)How to determine the key features of the function?The graph represents the given parameter of this question
From the question, the attached function is a quadratic function, and the key feature to calculate for the graph are:
DomainRangeVertexAxis of symmetryGenerally, the domain of a quadratic function is the set of all real values
This means that
Domain: -∝ < x < ∝
Also, the vertex from the graph is
Vertex = (-2, 6)
This represents the minimum
Remove the x coordinate
So, we have
y = -6
The vertex is a minimum
So, the range is y ≥ - 6
Recall that
Vertex = (-2, 6)
Remove the y coordinate
So, we have
x = -2
This represents the axis of symmetry
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REWARDING 100+ POINTS IF ONE PERSON GETS THIS CHALLENGING PROBLEM RIGHT
is it uh x=16.25 or 16 and y=7.87 or just 7? I dont know to be honest
Tyson wants to solve the inequality 1/3m < -21 How can be isolate the variable?
Answer:
multiply both sides by 3 and do not reverse the inequality symbol
Step-by-step explanation:
Given
\(\frac{1}{3}\) m < - 21 ( isolate m by multiplying both sides by 3 )
m < - 63
Multiplication both sides by 3 but not reversing the inequality sign to isolate the variable
Isolate variable:Please find the given question.
isolate variable=?
\(\to \frac{1}{3} m < - 21\) ( isolating the value of m multiplying both sides with 3 )
\(\to m < - 63\)
Therefore, the final answer is "Tyson aims to fix the inequality \(\frac{1}{3} m < - 21\)multiplication both sides by 3 but not reversing the inequality sign to isolate the variable".
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brainliest and 100 points! i really appreciate the help, and please let me know if you need help on anything, thanks!!
Answer:
SSS, SAS, ASA, AAS, and HL are valid and sufficient criteria to prove that two triangles are congruent.
1. Describe how each scenario represents a function.
Answer:
Step-by-step explanation:
If you can't solve it algebraically I suggest plot the points or lines and see if they meet the VTL (vertical line test).
The temperature is -3 °C at 6 a.m. and rises 12 °C by midday.
What is the temperature at midday?
Answer:
9 C at midday
Step-by-step explanation:
Answer: 15
Step-by-step explanation:
Consider a storage tank containing Vo liters of pure water. Water containing salt at a concentration of co kg/liter enters the tank at a rate r liters/min. The well-mixed solution leaves the tank at the same rate. Write down an initial value problem for the amount A(t) of salt in the tank at time t. You do NOT need to solve.
The initial condition for this problem would be:
A(0) = 0
The initial value problem for the amount A(t) of salt in the tank at time t can be written as follows:
dA/dt = (cᵢ * r) - ((A(t) / V₀) * r)
Here's a breakdown of the terms in the equation:
dA/dt represents the rate of change of the amount of salt in the tank over time.
(cᵢ * r) is the rate at which salt enters the tank, calculated by multiplying the concentration of salt in the incoming water (cᵢ) by the rate of incoming water flow (r).
((A(t) / V₀) * r) is the rate at which salt leaves the tank, calculated by dividing the current amount of salt in the tank (A(t)) by the total volume of the tank (V₀), and then multiplying by the rate of water flow (r).
The initial condition for this problem would be:
A(0) = 0
This equation represents the dynamics of salt accumulation and depletion in the tank over time, taking into account the inflow and outflow rates of the water-salt mixture.
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Graph the line that represents each linear equation.
1. y - 2 = 2(x + 3)
2. y + 3 = -2(x + 1)
3. y + 1 = -(x + 5)
Answer:
see attached
Step-by-step explanation:
You want to graph the lines described by the equations ...
y - 2 = 2(x + 3)y + 3 = -2(x + 1)y + 1 = -(x + 5)Point-slope formThe point-slope form of the equation of a line is ...
y -k = m(x -h) . . . . . . . line with slope m through point (h, k)
GraphThe point coordinates and slope can be read from the equation. When graphing these equations, it works well to plot the point, then draw a line through it that has the required slope (rise/run).
point (-3, 2); slope 2point (-1, -3); slope -2point (-5, -1); slope -1The graphs of these lines are attached. The relevant point is marked on each one.
What is the binomial probability formula used for?
The binomial probability formula is used to calculate the probability of a specific number of successes in a fixed number of independent trials, where each trial can only result in success or failure. It is used to model situations where there are only two possible outcomes for each trial, and where the trials are independent and identically distributed.
The formula for binomial probability is:
\(P(x) = (n choose x) * p^x * (1 - p)^{n-x}\\\)
where P(x) is the probability of x successes in n trials, p is the probability of success on each trial, (n choose x) is the binomial coefficient which gives the number of ways to choose x successes from n trials, and (1 - p) is the probability of failure on each trial.
The binomial probability formula can be used in a variety of applications, such as:
Predicting the probability of a certain number of defective products in a production runEstimating the likelihood of a certain number of people out of a sample having a particular characteristicAnalyzing the probability of winning a certain number of games in a sports seasonFor more questions on Binomial Probability
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PLS HELP I'LL TRY TO GIVE BRAINLIEST
Select all the situations that can be represented by the tape diagram
Answer:
B. Andre babysat 5 times this past month and earned the same amount each time. To thank him, the family gave him an extra $4 at the end of the month. Andre earned $99 from babysitting. and C. A family of 5 drove to a concert. They paid $4 for parking, and all of their tickets were the same price. They paid $99 in total.
Step-by-step explanation: B and C are the right answers
Fill in the missing fraction: Do not reduce your answer. What is 10/12 plus blank equals 16/12
Answer:
The missing fraction is 6/12
(you can further simplify this but the question requires that you don't do that)
Step-by-step explanation:
To add fractions easily, their denominators should have the same value, so the denominator should be 12,
Then, to get 16 in the numerator, we need to find a number that on adding to 10, gives 16, or,
10 + x = 16
x = 16 - 10
x = 6
So, the numerator should be 6
so we get the fraction, 6/12
We can also solve it in an alternate way,
\(10/12 + x = 16/12\\x = 16/12 - 10/12\\x = (16-10)/12\\x = 6/12\)
*PLEASE HELP*
A magazine contains fourteen pages. You open to a random page.
Find the probability that the page number is 3 or 7.
“Or” meaning they want both. Since they each represent 1/14 add them together. 1/14+1/14=2/14. Then simplify 2/14 to get 1/7
So, the answer the 1/7
The place value of a digit............... ten times as you move one place from right to left
The answer to your question is that the place value of a digit increases ten times as you move one place from right to domain left. This means that if you move one place to the left of a digit in a number, its value becomes ten times greater.
For example, let's consider the number 532. The digit 3 is in the tens place, which means its value is 3 x 10 = 30. If we move one place to the left to the hundreds place, the digit 5 now represents 5 x 100 = 500. Similarly, if we move one place to the right of the digit 3, to the ones place, it becomes 3 ÷ 10 = 0.3.
In summary, the for your question is that the place value of a digit increases or decreases by a factor of ten as you move one place to the left or right, respectively. This is important to understand when working with large or small numbers in math.
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s the value of the expression below when z = 3? 10z² - 2z - 2
Answer:
82
Step-by-step explanation:
10(3)² - 2(3) - 2
10(9) - 6 - 2
90 - 6 - 2
82
Best of Luck!
z = 3
Given Equation:10z² - 2z - 2
Solution:by putting the value of z, we get
10(3)² - 2(3) - 2
= 10(9) - 6 - 2
= 90 - 8
= 82
Answer:82
A senior accounting major at Midsouth State University has job offers from four CPA firms. To explore the offers further, she asked a sample of recent trainees from each firm: How many months did you work before receiving a raise in salary
A) If F > 5.417, reject H0.
B) We are unable to rule out the null hypothesis and come to the conclusion that the four CPA firms' average number of months before a raise was granted varied from one another at the 0.05 level of significance.
How many months did you work before receiving a raise in salary?A) The table shows that the df1 and df2 values are 3 and 15, respectively. Additionally, a significance threshold of = 0.01 is provided.
A further f-value of 1.75 is provided.
As a result, given the significance level of = 0.01 and the values of df1 and df2, respectively, from the f-distribution table, we have;
5.417 F-critical
Normally, if F > 5.417, we reject H0.
However, F is 1.75 5.417 in this instance, so we draw the conclusion that we do not rule out H0 at the 0.01 level of significance.
B) Using the second attached table's df1 = 3 and df2 = 15 values for 0.05 level of significance, we have
F-critical equals 3.2874.
Once more, the f-value is lower than this important one.
Therefore, we cannot rule out the null hypothesis and come to the conclusion that the four CPA firms' average amount of months until a raise was granted varied from one another at the 0.05 level of significance.
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Question:
A senior accounting major at Midsouth State University has job offers from four CPA firms. To explore the offers further, she asked a sample of recent trainees how many months each worked for the firm before receiving a raise in salary. The sample information is submitted to Minitab with the following results:
Analysis of Variance
Source df SS MS F P
Factor 3 28.17 9.39 5.37 0.010
Error 15 26.26 1.75
Total 18 54.43
A) Reject H0 if F >
B) For the 0.05 level of significance, is there a difference in the mean difference in the mean number of months before a raise was anted among the four CPA firms?
calculate the volume:
(image will be inserted)
Answer:
D. 44 dm³
Step-by-step explanation:
Volume of cuboid equals:
a × h
4 × 11
= 44
The volume of the shape is 44 dm³.
Find the distance between 5 + 4i and 9 + 3i.
Answer:
Distance = √17
Step-by-step explanation:
We are looking for the distance between 5 + 4i and 9 + 3i.
This is as equal to saying we have two points in the plane, whose coordinates are; (5, 4) and (9, 3)
Distance between the 2 points will be;
D = √[(5 - 9)² + (4 - 3)²]
D = √(16 + 1)
D = √17