Answer:
Step-by-step explanation:
8.18
is a fraction a term? If it's not a term, why is it that we can apply the distributive property to it? the distributive property only works for either terms, or addition and subtraction. a fraction is technically division, so why does it work? Please help!!!!!
No, a fraction is not a term. The distributive property can be applied to fractions because it is a general mathematical principle.
A fraction is not considered a term in the traditional sense. It is a mathematical expression that represents division. However, the distributive property can still be applied to fractions because the property itself is a fundamental rule of arithmetic that extends beyond specific types of expressions.
The distributive property states that for any real numbers a, b, and c:
a × (b + c) = (a × b) + (a × c).
When working with fractions, we can apply the distributive property as follows:
Let's consider the expression: a × (b/c).
We can rewrite this as: (a × b)/c.
Now, let's distribute the 'a' to 'b' and 'c':
(a × b)/c = (a/c) × b.
In this step, we applied the distributive property to the fraction (a/c) by treating it as a whole.
Although fractions represent division, we can still use the distributive property because it is a general mathematical principle that allows for manipulating expressions involving addition, subtraction, multiplication, and division.
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A triangle has three angles of 36°, 34° and 110°.
Classify the triangle.
A. equilateral
B. obtuse
C. acute
D. right
The type of triangle is an obtuse triangle.
What are obtuse triangles?A triangle is a 3-sided polygon.Every triangle has three sides and three angles, some of which may be the same. When the angles are thesame, the triangle is called an equilateral triangle.
An obtuse triangle is a type of triangle in which one of it's angles is more than 90°.
An acute triangle is a type of triangle in which none of it's angles is UpTo 90°
Also a right triangle is a type of triangle in which one of the angles is exactly 90°.
Therefore since one of the angles is 110 and it is greater than 90°, the angle is an obtuse triangle.
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Alexander uses cupric chloride to etch circuit boards. He recorded the room temperature, in °C, and the etching
jim
rate, in
of the cupric chloride.
min
After plotting his results, Alexander noticed that the relationship between the two variables was fairly linear, so
he used the data to calculate the following least squares regression equation for predicting the etching rate from
the room temperature:
= 2 + 5
1
-2
What is the residual if the room temperature was 25°C and the cupric chloride had an etching rate of 5
min
The residual if the room temperature was 25°C and the cupric chloride had an etching rate of 5 μm/min is equals to the -2 μm/min.
The residual for each observation in statistics is the difference between predicted values of y (dependent variable) and observed values of y. That is Residual= observed y value − predicted y.
Here, cupric chloride is used to etch circuit boards. The linear regression equation is, y = 2 + (1/5)x
where, x = temperature in °C
y = etching rate in μm/min
Observed value of etching rate of cupric chloride = 5 μm/min for 25°C
To determine the estimated or predicted value of etching rate of cupric chloride, we substite x = 25, in the above linear equation, y = 2 + (1/5)x
=> y = 2 + (1/5)× 25
=> y = 7
So, Predicted Value = 7 μm/min
Observed Value = 5 μm/min.
Residual = Observed Value - Predicted
= 5 - 7 = -2
Hence, required value is -2 μm/min.
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Complete question:
Calculating and interpreting residuals You might need: Calculator Alexander uses cupric chloride to etch circuit boards. He recorded the room temperature, in °C, and the etching rate, in μm/min of the cupric chloride. After plotting his results, Alexander noticed that the relationship between the two variables was fairly linear, so he used the data to calculate the following least squares regression equation for predicting the etching rate from the room temperature: y = 2 + 5/x, What is the residual if the room temperature was 25°C and the cupric chloride had an etching rate of 5 μm/min. ? Show Calculator
The diagram below represent the rate of making copies on a copy machine. Which table represent this rate?
Answer:
its B
Step-by-step explanation:
Solve for x: two thirds plus one third times x equals two times x
NEED ANSWER ASAP DUE INN THREE HOURS
Hey there! I'm happy to help!
Let's write this equation out.
2/3+1/3x=2x
We want to get all of the variables on the left side and all the numbers on the right side so we can see what number x is equal to. First, Let's subtract 2/x from both sides.
2/3+1/3x-2x=0
We subtract 2/3 from both sides.
1/3x-2x=-2/3
We combine our x values.
-5/3x=-2/3
We divide both sides by -5/3.
x=-5
Have a wonderful day and keep on learning! :D
Which of these is a unit rate? A $25 per 5 hours B 10 kilometers per minute C 35 miles per 4 gallons D 75 yards per 25 dollars
Answer:
B. 10 km. per minute
Step-by-step explanation:
A unit rate is a ratio that is over 1. 10 km. per minute is describing how many km. in one minute. A unit rate can then be used to predict ratios further in a sequence by multiplying the minutes with the 10 km.
Hope that helps!
Answer:
b
Step-by-step explanation:
Suppose that public opinion in a large city is 65 percent in favor of increasing taxes to support the public school system and 35 percent against such an increase. If a random sample of 500 people from this city are interviewed, what is the approximate probability that more than 200 of these people will be against increasing taxes
According the question The approximate probability that more than 200 out of 500 people will be against increasing taxes is approximately 0.0114 or 1.14%.
Given:
- Sample size (n) = 500
- Probability of being against increasing taxes (p) = 0.35
- Probability of being in favor of increasing taxes (q) = 1 - p = 0.65
Mean (μ) and standard deviation (σ) of the binomial distribution:
\(\[\mu = n \cdot p = 500 \cdot 0.35 = 175\]\)
\(\[\sigma = \sqrt{n \cdot p \cdot q} \approx \sqrt{500 \cdot 0.35 \cdot 0.65} \approx 10.95\]\)
To find the probability of more than 200 people being against increasing taxes, we can use the normal approximation to the binomial distribution. Let's calculate the Z-score:
\(\[Z = \frac{{X - \mu}}{{\sigma}} = \frac{{200 - 175}}{{10.95}} \approx 2.28\]\)
Using a standard normal distribution table or calculator, we find that the probability of \(Z > 2.28\) is approximately 0.0114.
Therefore, the approximate probability that more than 200 out of 500 people will be against increasing taxes is approximately 0.0114 or 1.14%.
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Volume of a pentagonal prism is 360 inches cubed. The height of prism is 3 inches. What is the area of the pentagon base?
The pentagonal prism with volume 360 in³ and height of 3 inches have a base area of 120 in²
What is a pentagonal prism?A pentagonal prism is a prism that has two pentagonal bases like top and bottom and five rectangular sides.
Given that, the volume of a pentagonal prism is 360 in³, with a height of 3 inches,
We need to find the area of the base,
We know that, the volume of a pentagonal prism is =
V = 1/4 √(5(5+2√5)·a²h
Where a is the base edge and h is the height,
360 = 1/4·3 √(5(5+2√5)·a²
1/4·√(5(5+2√5)·a² = 120
Since, the base of a pentagonal prism is a pentagon, and the area of a pentagon = 1/4 √(5(5+2√5)·a²
And we have,
1/4 √(5(5+2√5)·a² = 120
Therefore, the base area is 120 in²
Hence, the pentagonal prism with volume 360 in³ and height of 3 inches have a base area of 120 in²
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FIND THE FORMULA FOR THE EXPONENTIAL GRAPHThe figure shows the graph of an exponential function. The dots on the graph are points with integer coordinates.The function graphed is P(t)Hint: The function may be written as P(t) = Pa^t
Based on the graph,
At,
f(2) = 1 (1)
f(9) = 6 (2)
\(\text{ f(x) = ab}^{\text{x}}\)At f(2) = 1,
\(\text{ 1 = ab}^2\)\(\text{ a = }\frac{\text{ 1}}{b^2}\)At f(9) = 6 ,
\(\text{ 6 = ab}^9\)\(\text{ a = }\frac{\text{ 6}}{b^9}\)Equate them to find b, a = a,
\(\text{ }\frac{\text{ 1}}{b^2}\text{ = }\frac{\text{ 6}}{b^9}\text{ }\rightarrow\text{ }\frac{b^9}{b^2}\text{ = }\frac{6}{1}\)\(\text{ b}^7\text{ = 6}\)\(\text{ b = }\sqrt[7]{6}\)Let's find a at f(2) = 1 and the seventh root of 6,
\(\text{ f(x) = ab}^{\text{x}}\)\(\text{ 1 = a(}\sqrt[7]{6})^2\)\(\text{ a = }\frac{\text{ 1}}{\sqrt[7]{36}}\)Let's now complete the equation.
\(\text{ f(x) = ab}^{\text{x}}\)\(\text{ f(x) =}\frac{1}{\sqrt[7]{36}}\text{ x (}\sqrt[7]{6})^x=\frac{\text{(}\sqrt[7]{6})^x}{\sqrt[7]{36}}\)\(\text{ f(x) }=\frac{\text{(}\sqrt[7]{6})^x}{\sqrt[7]{36}}\)Use the FOIL method to find the following product. (5+6)(5-4)
The product (5+6)(5-4) can be found using the FOIL method, which stands for First, Outer, Inner, Last. , the product of (5+6)(5-4) is equal to 5.
First, we multiply the first terms of each binomial: 5 multiplied by 5, which gives us 25.
Outer, we multiply the outer terms: 5 multiplied by -4, resulting in -20.
Inner, we multiply the inner terms: 6 multiplied by 5, giving us 30.
Lastly, we multiply the last terms: 6 multiplied by -4, which equals -24.
To find the final product, we combine the results: 25 - 20 + 30 - 24. Simplifying further, we have 5.
Therefore, the product of (5+6)(5-4) is equal to 5.
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Use the number line to answer the question. Each tick represents 1 unit. Where is point H located? -4 7 4 -7
Counting from point M (0 unit) on this number line, we can logically deduce that point H is located at -7.
What is a numerical data?A numerical data is also referred to as a quantitative data and it can be defined as a data set that is primarily expressed in numbers only. This ultimately implies that, a numerical data refers to a data set consisting of numbers rather than words.
The types of numbers.In Mathematics, there are six (6) common types of numbers and these include the following:
Natural (counting) numbersWhole numbersRational numbersIrrational numbersReal numbersIntegersWhat is a number line?A number line can be defined as a type of graph with a graduated straight line which contains both positive and negative numerical values that are placed at equal intervals along its length. Also, the negative numerical values are positioned at the left from zero while the positive numerical values are positioned at the right from zero.
Note: Each of the tick represents 1 unit.
Therefore, counting from point M (0 unit) on this number line, we can logically deduce that point H is located at -7.
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3. for questions 3-5, complete the missing values in each table below using the graph
The missing values are derived from the graph as follows:
3 ) 7, 14, 21, 28, 35
4) 3, 7, 10, 14, 17
5) 1, 21, 10, 49, 19
What is a graph?In mathematics, a graph is defined as a graphical representation or diagram that organizes facts or values. The graph's points frequently reflect the relationship between two or more objects.
In order to solve for the above values, the best way is to spot the function that exists in the graph which is given as:
F(y) = 3.5x
In the first table, where x = 2
y= 3.5 *2
= 7
This iteration goes on and on and is consistent for all the values.
In the second table,
Where F(y) is known, for example 10.5, then x is derived as:
10.5 = 3.5x (divide both sides by 3.5)
x = 3
This iteration goes on and on and is consistent for all the values.
In the third table, we simply swap the values back and forth using the function F(y) = 3.5x to derive all values.
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Resolve into factors:2p(p-1)-p+1
Answer:
Do it your self
Step-by-step explanation:
please help!! 8th grade math
Answer:
A. -3
Step-by-step explanation:
The y-axis is the one going up and down (vertical). The line touches the y-axis at (0,-3)
If an official NBA basketball has a circumference of 29.5 inches, what is the approximate volume in cubic inches?
19.66
92.34
321.75
433,63
Around 433.63 would be the correct answer
Sarah and her children went into a movie theater where they sell bags of popcorn for $7.50 each and drinks for $4.50 each. Sarah has $90 to spend and must buy a minimum of 16 bags of popcorn and drinks altogether. If xx represents the number of bags of popcorn purchased and yy represents the number of drinks purchased, write and solve a system of inequalities graphically and determine one possible solution.
Answer:is there any choices?
Step-by-step explanation:
need ASAP Now!! please help with answer!
Answer:
\(y = 1500 * 1.09^t\)
Step-by-step explanation:
\(\text{It should be clear that the rate of change is non-linear}\)\(\text{, meaning that we can express the function in the following manner}\)
\(\text{y = a * b^t, where a is the initial value and b is the rate of change and t is how}\)\(y = a * b^t,\) \(\text{where a is the initial value and b is the rate of change and t is how many years.}\)
\(\text{Well, year 0 is the rate of change so we can say that a = 1500}\)
\(\text{Next, we divide any two consecutive year balances to find our rate of change:}\)
\(1635/1500 = 1.09\)
\(\text{Therefore, our equation looks like this:}\)
\(y = 1500 * 1.09^t\)
Answer:
y = 1.09^t * 1500
Step-by-step explanation:
After each year, the balance(y) is multiplied by 1635/1500 or 1.09.
From this information, we know that y = 1.09^t * 1500
At a sale, the price of a washing machine
was reduced by 12% to $440. What was the original price of the washing machine?
Answer:
$500
Step-by-step explanation:
100-12=88
88/100=440/x
88x=100(440)
88x=44000
/88. /88
x=500
hopes this helps
What is the solution of 3x 4y 12?.
(0,3) , (4,0) are two solution of equation 3x + 4y = 12.
An equation is a mathematical statement that asserts the equality of two expressions. It typically consists of two parts, separated by an equal sign (=), with the expressions on either side representing the same value.
Given Linear equation in two variables:
3x + 4y = 12 ----( 1 )
Substitute x = 0 , in equation ( 1 ) ,
3 × 0 + 4y = 12
=> 4y = 12
=> y = 12/4
y = 3
Therefore ,
( x , y ) = ( 0 , 3 )
Substitute y = 0 in equation ( 1 ) ,
3x + 4 × 0 = 12
=> 3x = 12
=> x = 12/3
x = 4
Therefore,
( x , y ) = ( 4 , 0 )
Required two solutions are ( 0 , 3 ) , ( 4 , 0 )
Therefore, (0,3) , (4,0) are two solution of equation 3x + 4y = 12.
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Evaluate the following limits. lim n -> ∞ sum i = 1 to n ((i ^ 2)/(n ^ 2)) * (1/n) (Picture of equation for clarification)
Given:
Required:
To find the limit value of the given function.
Explanation:
\(\begin{gathered} =\lim_{n\to\infty}[\frac{1^2}{n^3}+\frac{2^2}{n^3}+........+\frac{n^2}{n^3}] \\ =\lim_{n\to\infty}\frac{1^2+2^2+3^2+.........+n^2}{n^3} \\ =\operatorname{\lim}_{n\to\infty}\frac{\sum_^n^2}{n^3} \\ =\operatorname{\lim}_{n\to\infty}\frac{1}{n^3}\times\frac{n(n+1)(2n+1)}{6} \\ =\operatorname{\lim}_{n\to\infty}\frac{n^3(1+\frac{1}{n})(2+\frac{1}{n})}{6n^3} \end{gathered}\)Cancel out the same terms from the numerator and denominator.
\(=\lim_{n\to\infty}\frac{(1+\frac{1}{n})(2+\frac{1}{n})}{6}\)Now apply the limit.
\(\begin{gathered} =\frac{(1+\frac{1}{\hat{\infty}})(2+\frac{1}{\infty})}{6} \\ =\frac{(1+0)(2+0)}{6} \\ =\frac{2}{6} \\ =\frac{1}{3} \end{gathered}\)Final Answer:
The limit value of the given function is
\(\frac{1{}}{3}\)\(\frac{1{}}{3}\)A local charity sponsors a 5K race to raise money. It receives $45 per race entry and $17,900 in donations, but it must spend $10 per race entry to cover the cost of the race.
Write and solve an inequality to determine the number of race entries the charity needs to raise at least $55,000.
Answer: Let x be the number of race entries. In order to raise at least $55,000, we must have 45x + 17,900 ≥ 55,000 −45x ≥ −37,100 x ≤ -37,100/45 x ≤ 824.44 Therefore, the charity needs 824 or more race entries to raise at least $55,000.
subtract 8/9 - (-2/3)
Answer:
D.) 14/9
Step-by-step explanation:
Remove parenthesis and add
8/9 + 2/3
Get LCD of 9
8/9 + 6/9 = 14/9
Pieceswise defined functions
f(x) = {x, if x < 0
x^2, if x >= 0
This function is defined by two pieces: the formula x for x < 0, and the formula x^2 for x >= 0. The "jump" or change in formula occurs at x = 0.
A) From the given graph we see that, step function has 4 pieces. B) The step function is composed of 3 intervals: (0, 1), [1, 2), [2, 3), and [3, ∞). C) Point is not included in a function, it is indicated by an open circle.
What is a piecewise function?A function that is defined by various equations or formulae on various intervals or portions of its domain is known as a piecewise function. To put it another way, a piecewise function is a function made up of several functions that have been "stitched" together.
A piecewise function is defined on a particular interval or collection of intervals for each piece. A "jump" or change in the formula used to describe the function is commonly indicated by vertical lines that separate the intervals when different parts of the function are described.
A) From the given graph we see that, step function has 4 pieces.
B) The step function is composed of 3 intervals: (0, 1), [1, 2), [2, 3), and [3, ∞).
C) When a point is not included in a function, it is indicated by an open circle; when a point is included in a function, it is indicated by a closed circle.
D) Because each input (weight) translates into exactly one output (postage cost), this is a function. In other words, no two weights that are different from one another have the same shipping price.
E) Because each piece of this piecewise function can be represented by a linear equation of the form y = mx + b, where m and b are constants, the pieces of this piecewise function are linear.
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Laura bought the apples, bananas, and strawberries shown below to use in a fruit salad. What percent of the fruit is apple?
Answer:
4/12
Step-by-step explanation:
i am not good at this but i will try☺
Answer:
30%
Step-by-step explanation:
To find the percentage of something we decide the amount of things we want to find the percentage off by the total amount of things and then multiply the product by one hundred.
Apple: 4
Total fruit: 12
So,
4/12 = 0.3
The percentage of apples:
30%
Which equation is parallel to the line y=2x - 3 and includes the point (3,
8)?*
Answer: hola
Step-by-step explanation:
Claire flips a coin 4 times. Using the table, what is the probability that the coin will show tails at least once?
2.
Number of Tails
Probability
0
0. 06
1
0. 25
3
0. 25
4
0. 06
?
O 0. 06
O 0. 25
0. 69
O 0. 94
Mark this and return
Save and Exit
Next
Sunmit
The probability that the coin will show tails at least once is 0.56.
To find the probability that the coin will show tails at least once, you can sum the probabilities of getting 1, 3, or 4 tails, as shown in the table:
Probability of 1 tail: 0.25
Probability of 3 tails: 0.25
Probability of 4 tails: 0.06
Now, add these probabilities together:
0.25 + 0.25 + 0.06 = 0.56
So, the probability that the coin will show tails at least once is 0.56.
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Solve the inequality 13 > 3x + 1
I hope it helps you ❤️❤️❤️
A sector of a circle has central angle 120 degrees and arc length 10π
centimeters. What is the radius of the circle
Answer:
the radius = 15 cmStep-by-step explanation:
let r be the radius of the circle.
→ We know that in circle , the length of an arc
and the corresponding central angle are proportional.
180 corresponds to πr
120 corresponds to 10π
Then
\(\frac{\uppi r}{180} =\frac{10\uppi }{120}\)
\(\Longrightarrow r=\frac{180\times 10\pi }{120\pi } =\frac{180}{12} =15\)
the national average.
If the national average for a gallon of gas is $2.59, how much
should you expect to pay for gas in Philadelphia versus
Cleveland?
A. $3.03 / $2.75
B. $1.95 / $2.59
C. $2.34 / $2.75
D. $2.75 / $3.24
Philadelphia Clevland
Overall 92 78
Food 106 106
Housing 56 27
Utilities 130 126
Transportation 117 106
Health 102 113
The correct answer is D. $2.75 / $3.24
To determine how much you should expect to pay for gas in Philadelphia versus Cleveland, we need to compare the transportation expenses in both cities. Based on the given data, the transportation expenses are as follows:
Philadelphia: $117
Cleveland: $106
To calculate the expected gas prices, we need to consider the transportation expenses relative to the national average. The formula to find the expected gas price is:
Expected Gas Price = National Average * (Transportation Expense / National Average)
National Average for gas = $2.59
For Philadelphia:
Expected Gas Price in Philadelphia = $2.59 * ($117 / 92) ≈ $3.30
For Cleveland:
Expected Gas Price in Cleveland = $2.59 * ($106 / 78) ≈ $3.51
Comparing the expected gas prices, we find that:
A. $3.03 / $2.75: This option does not match the expected gas prices in Philadelphia and Cleveland.
B. $1.95 / $2.59: This option does not match the expected gas prices in Philadelphia and Cleveland.
C. $2.34 / $2.75: This option does not match the expected gas prices in Philadelphia and Cleveland.
D. $2.75 / $3.24: This option matches the expected gas prices in Philadelphia and Cleveland.
Therefore, the correct answer is:
D. $2.75 / $3.24
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Given points A(0, 0), B(3, 2), and C(−2, 3), which statement is true?
BC is perpendicular to CA.
AB is perpendicular to AC.
AB is parallel to AC.
AB is longer than BC.
Answer:
AB is parallel to AC
Step-by-step explanation:
the product of the gradients of perpendicular line should be -1
AB=2/3
AC=-3/2
2/3*-3/2=-1
=-1
The correct statement is,
⇒ AB is perpendicular to AC.
What is Equation of line?The equation of line in point-slope form passing through the points
(x₁ , y₁) and (x₂, y₂) with slope m is defined as;
⇒ y - y₁ = m (x - x₁)
Where, m = (y₂ - y₁) / (x₂ - x₁)
We have to given that;
Points are,
A(0, 0), B(3, 2), and C(−2, 3),
Now, We can find slopes as;
AB = (2 - 0) / (3 - 0)
AB = 2/3
AC = (3 - 0)) / (- 2 - 0)
AC = - 3/2
Hence, AB is perpendicular to AC.
Thus, The correct statement is,
⇒ AB is perpendicular to AC.
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