Answer:
3(8a+9) correct me if i'm wrong.
Step-by-step explanation:
Ms.Maxwell bought a purse with 1/4 of her money. The purse cost $37.00. How much money did Ms.Maxwell have left after she bought the purse?
Answer:
the money left after purchasing the purse is $111
Step-by-step explanation:
The computation of the money left after purchasing the purse is given below:
Since in the question it is mentioned that she bought a purchase with one-fourth of money
And, the purse cost is $37
So the amount left would be
= $37 × (3 ÷ 4) ÷ (1 ÷ 4)
= $37 × 0.75 ÷ 0.25
= $111
Hence, the money left after purchasing the purse is $111
Which volume of carbon dioxide, at room temperature and pressure, is formed when 0.5 moles of ethane burn? A 48 dm³ B 24 dm³ C 12 dm³ D 6 dm³ A solution of ethanoic acid, CH3COOH, has a concentration of 2 mol/dm³.
Simply multiply the number of moles by 24 to obtain the volume of gas in dm3 at standard pressure and temperature.
What happens when ethane is burned?According to the chemical formula 2 C2H6 + 7 O2 → 4 CO2 + 6 H2O + 3120 kJ, the full combustion of ethane releases 1559.7 kJ/mol, or 51.9 kJ/g, of heat along with carbon dioxide and water. Amorphous carbon and carbon monoxide can be produced when combustion doesn't involve too much oxygen.
Exothermic reactions, such as the combustion of hydrocarbons, provide heat energy. To find the volume of gas in dm3 at room temperature and pressure, simply multiply the number of moles by 24.
The typical scenario is that you are following a recipe that, for instance, calls for a 0.5 molar solution of NaOH. As you are aware, "0.5 M" refers to 0.5 moles per liter.
Therefore, the correct answer is option B 24 dm³.
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a college algebra class has 48 female and 44 male students. suppose you select one student at random to solve a math problem, what is the probability that the selected student is a female?
Probability of selecting a female student from the given number of students is equal to 0.5217.
As given in the question,
Number of female students in algebra class = 48
Number of male students in algebra class = 44
Total Number of students in algebra class = 48 + 44
= 92
Total number of outcomes = ⁹²C₁
Number of favourable outcomes = ⁴⁸C₁
Probability of selecting a female student
= (Number of favourable outcomes) / (Total number of outcomes )
= ⁴⁸C₁ / ⁹²C₁
= 48 / 92
= 12/23
= 0.5217
Therefore, the probability of selecting a female students from the given number of male and female students is equal to 0.5217.
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Plz help me!! This is all the points i have let plz help
Answer:
Each snack cost $2.50
and
Each movie ticket cost $8.75
Step-by-step explanation:
i am big brain
WILL MARK BRAINLIEST
Enter the values for the following composite transformation.
Translate
units left and _____ units down, then rotate _____°.
Answer:
down 6,right 4, rotate 180 degrees assuming we are starting from the blue heart.
Step-by-step explanation:
What is the graph of a quadratic equation known as?
Answer:
The graph of a quadratic function is a U-shaped curve called a parabola.
Step-by-step explanation:
The optimal amount of x1, x2, P1, P2 and income are given by the
following:
x1= 21/ 7p1 x2= 51 / 7p2
The original prices are: P1=10 P2=5 The original income is: I
=4189 The new price of P1 is the foll
The total change in the consumed quantity of x₁ as per given price and income is equal to 213.
x₁ = (21/7)P₁
x₂ = (51/7)P₂
P₁ = 10
P₂ = 5
P₁' = 81
To calculate the total change in the quantity consumed of x₁ when the price of P₁ changes from P₁ to P₁',
The difference between the quantities consumed at the original price and the new price.
Let's calculate the quantity consumed at the original price,
x₁ orig
= (21/7)P₁
= (21/7) × 10
= 30
x₂ orig
= (51/7)P₂
= (51/7) × 5
= 36.4286 (approximated to 4 decimal places)
Now, let's calculate the quantity consumed at the new price,
x₁ new
= (21/7)P1'
= (21/7) × 81
= 243
x₂ new
= (51/7)P2
= (51/7) × 5
= 36.4286
The total change in the quantity consumed of x₁ can be calculated as the difference between the new quantity and the original quantity,
Change in x₁
= x₁ new - x₁ original
= 243 - 30
= 213
Therefore, the total change in the quantity consumed of x₁ is 213.
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The above question is incomplete, the complete question is:
The optimal amount of x1, x2, P1, P2 and income are given by the following:
x1= 21/ 7p1 x2= 51 / 7p2
The original prices are: P1=10 P2=5 The original income is: I =4189 The new price of P1 is the following: P1'=81 Assume that the price of x1 has changed from P1 to P1'. What is the total change in the quantity consumed of x1?
Please answer step by step
#1: One of the steps Jamie used to solve an equation is
shown below.
`-5(3x+7)=10
`-15x+-35=10`
Which statements describe the procedure Jamie used in this
step and identify the property that justifies the procedure?
Jamie added -5 and 3x to eliminate the parentheses. This
procedure is justified by the distributive property.
Jamie multiplied 3x and 7 by -5 to eliminate the parentheses.
This procedure is justified by the distributive property.
Jamie added -5 and 3x to eliminate the parentheses. This
procedure is justified by the associative property.
Jamie multiplied 3x and 7 by -5 to eliminate the parentheses.
This procedure is justified by the associative property.
Jamie multiplied 3x and 7 by -5 to eliminate the parentheses.
This procedure is justified by the distributive property.
What is Distributive property ?This property states that multiplying the total of two or more addends by a number will provide the same outcome as multiplying each addend by the number separately and then adding the results together.
When we need to multiply a number by the sum of two numbers, the distributive property of multiplication over addition comes into play. Let's multiply 7 by the sum of 20 plus 3 as an illustration. This can be expressed mathematically as 7(20 + 3).
The distributive rule of multiplication over addition and subtraction is another name for the distributive property. By its very name, the procedure implies that something will be divided or distributed. Both addition and subtraction are under the scope of the distributive law.
Jamie multiplied 3x and 7 by -5 to eliminate the parentheses.
This procedure is justified by the distributive property.
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y-3 rewrite as a postitive exponent
Answer:
(see first pic attached)
Step-by-step explanation:
A club with 20 women and 17 men needs to form a committee of size six. How many committees are possible if the committee must have three women and three men
There are 775200 possible committees with three women and three men from a club with 20 women and 17 men.
The number of ways to choose 3 women out of 20 is given by the combination formula:
C(20,3) = 20! / (3! * (20-3)!) = \(\frac{201918}{ (321)}\) = 1140
Similarly, the number of ways to choose three men from 17 men is:
C(17,3) = 17! / (3! * (17-3)!) = \(\frac{171615}{321}\) = 680
Therefore, the total number of possible committees with three women and three men is:
1140 * 680 = 775200
The combination formula, also known as the binomial coefficient formula, is a mathematical formula used to calculate the number of ways that k objects can be chosen from a set of n objects without regard to the order in which they are chosen. It is denoted by the symbol "n choose k" and is represented mathematically as "n choose k = n! / (k! * (n-k)!)".
The combination formula is commonly used in probability theory and statistics to calculate the number of ways that a certain outcome can occur. For example, if there are 10 people in a room and you want to choose 3 of them to form a committee, the combination formula can be used to calculate the number of possible committees that can be formed.
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a manufacturer claims that the mean lifetime of its fluorescent bulbs is 1500 hours. a homeowner selects 40 bulbs and finds the mean lifetime to be 1480 hours with a population standard deviation of 80 hours. test the manufacturer's claim. use alpha equal to 0.05. state the sample mean and the population standard deviation.
Z-score of the manufacturer's claim is 0.25.
what is Z-score?It is a statistical expression that refers the difference between observed value and standard deviation.
How to calculate Z value?we calculate the Z-score from the following equation.
Z-score= X-μ/σ
(Observed value- mean value)/standard deviation
as per the question= (manufacturer's claim - sample mean)/standard deviation
(1500-1480)/80=0.25
hence, Z-score is 0.25
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Z-score of the manufacturer's claim is 0.25.
what is Z-score?It refers to the difference between the observed value and standard deviation and is a statistical statement.
The standard score, also known as a z-score, is a highly helpful statistic since it lets us compare scores from different normal distributions and assess the likelihood that a given score will fall within our normal distribution.
The 90th percentile's z-score is 1.2816, as calculated by the Percentile to Z-Score Calculator. Therefore, a student's z-score would be deemed "excellent" if it was greater than or equal to 1.2816.
How to calculate Z value?we calculate the Z-score from the following equation.
Z-score= X-μ/σ
(Observed value- mean value)/standard deviation
as per the question= (manufacturer's claim - sample mean)/standard deviation
(1500-1480)/80=0.25
hence, Z-score is 0.25
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--7x-7y= 28
2x - 7y = 1
please solve this systems of eqautions
After solving the equation the linear equation is x = 27/5 , y = 7/5.
What do you mean by linear equation?
Equations with the highest degree of 1 are called linear equations. This means that the exponent of the variable in the linear equation is greater than 1. The graph of a linear equation is always a straight line.
A linear equation is an algebraic equation in which each term has exponent 1, and the graph of this equation is always a straight line. For this reason, it is called a "linear equation".
Given system of equation:
7x - 7y = 28 ..........(1)
2x - 7y = 1 .............(2)
Solve this system of linear equation. Find the value of 7y from equation (1) and substitute in equation(2)
7x - 7y = 28
7x - 28 =7y .............(3)
Substitute this value in equation (2)
2x - (7x - 28) = 1
2x - 7x + 28 = 1
-5x + 28 = 1
5x = 28 - 1
5x = 27
x = 27/5
Substitute this value in equation (3)
7y = 7(27/5) - 28
7y = 189/5 - 28
7y = 49/5
y = 7/5
Therefore, x = 27/5 , y = 7/5
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Determine whether the given value is a sample statistic or a population parameter. A researcher examines the records of all the registered voters in one city and finds that 43% are registered Democrats. Group of answer choices
Answer: Population parameter
Step-by-step explanation: The parameter can be defined as a numerical value used to describe an entire population. The population describes all the entire values or members belonging to a particular group. Hence, numerical values which are used to explain the characteristic of the population is called the population parameter. Sample statistics on the other hand are numerical values associated statistical properties of a sample which is a subset of a certain population.
In the instance given above, 43% represents the population parameter which describes the percentage number of Democratic voters out of the entire population of voters in the city.
Help with slope pleaseee
^^
Choose the pieces(s) of information included in Ashley's cost function. Select all that apply A. Amount her grandma is paid B. The cost of her grandma's heat and cable TV C. Profit per item D. Item selling price E. Yam price to make toys
The cost function is composed of various pieces of information that relate to the costs of the production process.
Ashley's cost function includes the cost of her grandma's heat and cable TV and Yam price to make toys.The cost function of Ashley is the economic relationship between the costs incurred by Ashley and the production of her products. It is a mathematical function that helps her analyze the production process to make her product profitable. The cost function is composed of various pieces of information that relate to the costs of the production process.Here are the pieces of information included in Ashley's cost function:- The cost of her grandma's heat and cable TV- Yam price to make toysTherefore, the correct answer is B and E.
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If the simple interest on a sum of a money invested at 3. 5% per annum for 44 years is birr 420, find the principal
As per the given simple interest, the principal amount is $165.35.
The term simple interest in math is defined as the interest charge on borrowing that's calculated using an original principal amount only and an interest rate that never changes.
Here we have given that If the simple interest on a sum of a money invested at 3. 5% per annum for 44 years is birr 420.
Therefore, through the given question we have identified the value of
interest rate = 3.5%
time period = 44
sum amount = 420.
Then the principal amount is calculated by using the formula of simple interest as,
P = A / (1 + rt)
Here first we have to convert R percent to r a decimal, then we get
r = R/100 = 3.5%/100 = 0.035 per year.
Now, we have to apply the values on the equation and then we have to solve our equation, then we get
P = 420 / ( 1 + (0.035 × 44)) = 165.35433070866
P = $165.35
Therefore, the principal investment required to get a total amount, principal plus interest, of $420.00 from simple interest at a rate of 3.5% per year for 44 years is $165.35.
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Which expression is equivalent to 4 - 7?
A
4 +7
B
4- (-7)
C
4+ (-7)
D 7+ (-4)
C
im to lazy to explain but this is the answer
Let s=[1 1 1 1] find sa and interpret his elements find ast and interpret its elements
The sum of the elements in vector s [1 1 1 1] is sa = 4. The elements in ast, which represents the squared elements of s, are [1 1 1 1].
The vector s = [1 1 1 1] represents a 1-dimensional array with four elements, all of which are equal to 1.
To find sa, we need to sum up all the elements of vector s. Therefore, sa = 1 + 1 + 1 + 1 = 4.
The interpretation of the elements in sa is as follows: Each element in sa represents the sum of the corresponding elements in vector s. In this case, since all elements in s are 1, sa represents the sum of four 1's, which is equal to 4.
Now, let's consider the calculation of ast. Since there is no specific definition provided for ast, we will assume that ast refers to the squared elements of vector s.
To calculate ast, we need to square each element in vector s. Therefore, ast = [1^2 1^2 1^2 1^2] = [1 1 1 1].
The interpretation of the elements in ast is as follows: Each element in ast represents the squared value of the corresponding element in vector s. In this case, all elements in ast are equal to 1 because each element in vector s is 1, and squaring 1 gives us 1.
Complete question - Let vector s=[1 1 1 1] then, find sa. Also, find ast and interpret it's elements
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Which is an equation of the line with a slope of 1/3 and a y-intercept of -2?
Answer:
y = \(\frac{1}{3}x\) - 2
Step by step explanation:
You use the slope intercept form equation: y = mx + b
m is the slope, and b is the y intercept
Hope this helps!
which number is a perfect cube 25 36 100 64
Answer:
The answer is 64
Step-by-step explanation:
A perfect cube is a number that is the cube of an integer. Some examples of perfect cubes are 1, 8, 27, 64, 125, 216, 343, ..
2/7 done! If it’s right I will put brainliest!
Answer:
The name of the marked angle is (angle BAD)
Step-by-step explanation:
Two positive consecutive numbers are represented by x and x+1. If four is added to the first
number and two is subtracted from the second number, the quotient of the new numbers is 11/16
Determine the numbers algebraically.
PLEASE HELP ASAP(it’s due tmw)
- thank you in advance :)
Answer:
x+4
x+1-2=x-1
Step-by-step explanation:
x+4/x-1=11/16 x should be different than 1 cz 1-1=0
16(x+4)=11(x-1)
16x+64=11x-11
16x-11x=-11-64
5x=-75
x=-15
Measurements of the sodium content in samples of two brands of chocolate bar yield the following results (in grams): Brand A: 34.36, 31.26, 37.36, 28.52, 33.14, 32.74, 34.34, 34.33, 30.95 Brand B: 41.08, 38.22, 39.59, 38.82, 36.24, 37.73, 35.03, 39.22, 34.13, 34.33, 34.98, 29.64, 40.60 Can you conclude that the variance of the sodium content differs between the two brands
We can conclude that there is not enough evidence to suggest that the variance of the sodium content differs between the two brands.
The problem provides measurements of the sodium content in samples of two brands of chocolate bar. To find if there is a difference in variance between the two brands, we can conduct a two-sample F-test for equality of variances at a 0.05 significance level.
The following is the null and alternative hypotheses for the test:
H0: The variances of sodium content in brand A and brand B are equal.
H1: The variances of sodium content in brand A and brand B are different.
If the test statistic is greater than the critical value, we reject the null hypothesis. Otherwise, we fail to reject the null hypothesis.
Using the data given, we find the sample variances for both brand A and B:
Variance of Brand A, s2A = 9.84
Variance of Brand B, s2B = 8.45
We calculate the F-statistic:
F = s2A / s2B = 1.16
The degrees of freedom for both brand A and B are dfA = 8 and dfB = 12 respectively.
We then find the critical values of F from an F-distribution table for dfA = 8 and dfB = 12, and at a 0.05 significance level. The critical values are 0.240 and 3.053 respectively.
Since our test statistic F = 1.16 is less than the critical value 3.053, we fail to reject the null hypothesis.
Therefore, we can conclude that there is not enough evidence to suggest that the variance of the sodium content differs between the two brands.
Thus, the chocolate bars of both brands can be assumed to have the same variance for sodium content.
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I need answer Immediately pls it’s due today!!!!!!
Answer:
14-16=2
Step-by-step explanation:
2÷5=0.4
probability is 0.4
explanation is optional plz help
Answer:
< COD and <DOE
Step-by-step explanation:
A linear pair is when two angle measures add up to 180 degrees, in other words, form a straight line.
If one looks at the picture, <COD and <DOE form line CE, therefore, they are a linear pair; they form a line.
Pleasssssse help meeeeee
Answer: \(x \geq 3\)
The graph has a closed circle pointing to the right
PLEASE help plssss no links and silly answers
Answer:
(H)
Step-by-step explanation:
Less than signs are <
Greater than signs are >
Since in this case x is the number
7 has to be less than x which is x<7
Answer:
f
Step-by-step explanation:
Sarah Meeham blends coffee for Tasti-Delight. She needs to prepare 120 pounds of blended coffee beans selling for $4. 17 per pound. She plans to do this by blending together a high-quality bean costing $5. 25 per pound and a cheaper bean at $2. 00 per pound. To the nearest pound, find how much high-quality coffee bean and how much cheaper coffee bean she should blend
Sarah should blend 80.5 pounds of the high-quality beans and 39.5 pounds of the cheaper beans to make 120 pounds of blended coffee.
In this problem, we are given that Sarah Meeham needs to prepare 120 pounds of blended coffee beans to sell at a rate of $4.17 per pound. She plans to blend two types of coffee beans: a high-quality bean costing $5.25 per pound and a cheaper bean costing $2.00 per pound.
Let x be the number of pounds of the high-quality coffee beans needed and y be the number of pounds of the cheaper coffee beans needed. Since we need 120 pounds of the blended coffee, we have:
x + y = 120
The cost of the blended coffee is $4.17 per pound. This means that the total cost of the blended coffee is:
4.17(120) = 501.6
We can also find the cost of the high-quality and cheaper beans in terms of x and y:
5.25x is the cost of the high-quality beans
2.00y is the cost of the cheaper beans
The total cost of the two types of beans is the sum of their individual costs:
5.25x + 2.00y
Since we need 120 pounds of the blended coffee, we can set up the following equation using the above expressions for total cost:
5.25x + 2.00y = 501.6
Now, we can use the system of equations consisting of x + y = 120 and 5.25x + 2.00y = 501.6 to solve for x and y. One way to do this is by substitution:
x = 120 - y (from the first equation)
5.25(120 - y) + 2.00y = 501.6 (substituting x in the second equation)
Simplifying and solving for y, we get:
630 - 5.25y + 2.00y = 501.6
3.25y = 128.4
y ≈ 39.5
Now we can use this value of y to find x:
x = 120 - y
x = 120 - 39.5
x ≈ 80.5
Therefore, Sarah needs to blend approximately 80.5 pounds of the high-quality coffee beans and 39.5 pounds of the cheaper coffee beans to make 120 pounds of blended coffee that she can sell for $4.17 per pound.
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U7L2 Cool Down
The measure of the arc from B to A not passing through C is 26 degrees.
1. What is the measure of angle BOA ?
2. What is the measure of angle BDA?
3. What is the measure of angle BCA ?
degrees
degrees
degrees
Using the inscribed angle theorems, the measure of the indicated angles are:
1. m∠BOA = 26°
2. m∠BDA = 13°
3. m∠BCA = 13°
What is the Inscribed Angle Theorems?Based on the inscribed angle theorem, the following relationships are established:
Inscribed angle = 2(measure of intersected arc)Central angle = measure of intersected arcGiven:
Intercepted arc BA = 26°
1. ∠BOA is central angle
Thus:
m∠BOA = 26° (inscribed angle theorems)
2. ∠BDA is inscribed angle.
m∠BDA = 1/2(30) = 13° (inscribed angle theorems)
3. m∠BCA = m∠BDA = 13° (inscribed angle theorems)
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Jenna collects stamps. She puts the same number of stamps on each page and then inserts each page into one of her two stamp books. One of her stamp books has a total of 840 stamps. The other has 1008. What is the largest number of stamps that Jenna could be putting on each page
168 is the largest number of stamps that Jenna could be putting on each page
What is the Greatest Common Factor?
The greatest common factor (GCF or GCD or HCF) of a set of whole numbers is the largest positive integer that divides evenly into all numbers with zero remainder. For example, for the set of numbers 18, 30 and 42 the GCF = 6.
So the largest number of stamps that Jenna could be putting on each page
would be gcd of 1008 and 840.
840 = 2 x 2 x 2 x 3 x 5 x 7
1008 = 2 x 2 x 2 x 2 x 3 x 3 x 7.
∴ The Gcd = 2 x 2 x 2 x 3 x 7 = 168.
Hence 168 is the largest number of stamps that Jenna could be putting on each page
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