To compare fractions using equivalent fractions, we need to find a common denominator, convert each fraction to an equivalent fraction with that denominator, and then compare the numerators directly.
To compare fractions 3/4 and 7/12 using equivalent fractions, we need to find a common denominator for both fractions. A common denominator is a number that is divisible by all the denominators of the fractions being compared. In this case, the least common denominator (LCD) for 4 and 12 is 12.
To convert 3/4 to an equivalent fraction with a denominator of 12, we need to multiply both the numerator and denominator by 3. This gives us the equivalent fraction of 9/12.
To convert 7/12 to an equivalent fraction with a denominator of 12, we need to multiply both the numerator and denominator by 1. This gives us the equivalent fraction of 7/12.
Now that both fractions have the same denominator, we can compare them directly. We can see that 9/12 is greater than 7/12 since 9 is greater than 7. Therefore, 3/4 is greater than 7/12.
This method allows us to compare fractions with different denominators and make accurate comparisons based on the relative size of the numerators.
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3. Suzy borrowed R2 400 from a bank for a period of two year and six months at a simple annual interest rate of 4.7% How much must she repay at the end of the period?
The amount Suzy must repay at the end of the period is R2 682.
What is simple interest?Simple interest is a method of calculating the interest charge. Simple interest can be calculated as the product of principal amount, rate and time period.
Simple Interest = (Principal × Rate × Time) / 100
In this case, we have:
P = R2 400
r = 0.047 (since the annual interest rate is 4.7%)
t = 2.5 years (since the period is two years and six months)
Substituting these values into the formula, we get:
I = 2400 * 0.047 * 2.5
I = 282
Therefore, the interest is R282.
The total amount to be repaid is the sum of the principal and the interest, which is:
2400 + 282 = R2 682
Therefore, by the simple interest the answer will be R2 682.
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F. Find the domain and the range of the following functions. Write your answers in set builder form. 1) \( f(x)=4 x^{2}-2 x+1 \) 2) \( g(x)=2 x-1 \), where \( x \neq 2 \) 3) \( h(x)=2 x-\sqrt{x+1} \)
The domain and range of the functions in set builder form are:
1) Domain: \(\{x|x\in\mathbb{R}\}\), Range: \(\{y|y\in\mathbb{R}\}\)
2) Domain: \(\{x|x\in\mathbb{R}, x\neq2\}\), Range: \(\{y|y\in\mathbb{R}\}\)
3) Domain: \(\{x|x\in\mathbb{R}, x\geq-1\}\), Range: \(\{y|y\in\mathbb{R}\}\)
The domain and range of a function are the possible values of x and y, respectively, for which the function is defined. We can find the domain and range of the given functions using set builder form, which is a way of describing a set of numbers using an expression.
The function \(f(x)=4x^{2}-2x+1\) is a polynomial function, and the domain of a polynomial function is all real numbers. Therefore, the domain of this function is \(x\in\mathbb{R}\), or in set builder form, \(\{x|x\in\mathbb{R}\}\). The range of this function is also all real numbers, so the range is \(y\in\mathbb{R}\), or in set builder form, \(\{y|y\in\mathbb{R}\}\).
The function \(g(x)=2x-1\) is also a polynomial function, so the domain is all real numbers except for x=2, since the function is undefined at that point. Therefore, the domain of this function is \(x\in\mathbb{R}, x\neq2\), or in set builder form, \(\{x|x\in\mathbb{R}, x\neq2\}\). The range of this function is also all real numbers, so the range is \(y\in\mathbb{R}\), or in set builder form, \(\{y|y\in\mathbb{R}\}\).
The function \(h(x)=2x-\sqrt{x+1}\) is a radical function, and the domain of a radical function is the set of values for which the expression under the radical is greater than or equal to zero. Therefore, the domain of this function is \(x\in\mathbb{R}, x\geq-1\), or in set builder form, \(\{x|x\in\mathbb{R}, x\geq-1\}\). The range of this function is also all real numbers, so the range is \(y\in\mathbb{R}\), or in set builder form, \(\{y|y\in\mathbb{R}\}\).
In conclusion, the domain and range of the functions in set builder form are:
1) Domain: \(\{x|x\in\mathbb{R}\}\), Range: \(\{y|y\in\mathbb{R}\}\)
2) Domain: \(\{x|x\in\mathbb{R}, x\neq2\}\), Range: \(\{y|y\in\mathbb{R}\}\)
3) Domain: \(\{x|x\in\mathbb{R}, x\geq-1\}\), Range: \(\{y|y\in\mathbb{R}\}\)
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What is the simplified form of [tex]\sqrt{400x ^{100}[/tex]
Answer:
[tex]20x^{50}[/tex]
Step-by-step explanation:
This is because you are simplifying the radical by breaking the radicand up into a product of known factors, assuming positive real numbers.
There is your answer!
A tabletop in the shape of a trapezoid has an area of 6,731 square centimeters. Its longer base measures 127 centimeters, and the shorter base is 85 centimeters. What is the height?
Answer:
[tex]\boxed{The \ height \ of \ the \ tabletop \ is \ 63.5 \ centimeters}[/tex]
Step-by-step explanation:
We are given that,
Length of the base = 127 centimeters
Width of the base = 85 centimeters
Area of the trapezoid shaped base = 6,731 square centimeters.
Since, we know,
[tex]\bold{Area \ of \ a\ trapezoid}=\frac{Length +Width}{2}\times Height[/tex]
So, we get,
[tex]6731=\frac{127+85}{2}\times Height[/tex]
i.e. [tex]6731=\frac{212}{2}\times Height[/tex]
i.e. [tex]6731=106\times Height[/tex]
i.e. [tex]Height=\frac{6731}{106}[/tex]
i.e. Height = 63.5 centimeters
Hence, the height of the tabletop is 63.5 centimeters.
20% tip, 8% tax sales. Total $23. 04, what is the pretax?
For a 20% tip, 8% tax sales. Total $23. 04, we can say that The pre-tax cost is $19.20.
Let x be the pre-tax cost of the sales. Then we can set up the equation:
x + 0.20x + 0.08x = 23.04
Simplifying and solving for x, we get:
1.28x = 23.04
x = 23.04 / 1.28
x = 18
Therefore, the pre-tax cost of the sales is $18. However, we need to add the 20% tip and 8% tax to this amount to get the total cost of $23.04. The tip is $3.60 (0.20 * 18) and the tax is $1.44 (0.08 * 18), which when added to $18 gives us a total cost of $23.04.
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Help asap will give briniest
The frequency of each interval is:
81-100: 2
61-80: 2
1-20: 1
21-40: 1
41-60: 2
What is frequency interval?
Frequency refers to the number of times a particular value or event occurs within a given dataset or sample. In statistics, frequency is used to describe the distribution of values in a dataset, and it is often represented as a frequency table or histogram.
Frequency is often used in conjunction with other statistical measures such as mean, median, and mode to describe the central tendency and variability of a dataset. By analyzing the frequency of values within a dataset, we can identify patterns and trends, and make inferences about the population from which the sample was drawn.
According to the question:
Using the given intervals, we can count the frequency of each interval as follows
81-100: 2 (81, 97)
61-80: 2 (65, 44)
1-20: 1 (2)
21-40: 1 (24)
41-60: 2 (25, 38)
Total: 8
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Mary wins £400.
She gives 50% to her mother.
Mary gives 20% to her sister.
She keeps the rest.
Work out how much each person receives.
Answer:
Mother: £200, Sister: £80, Mary: £120
Step-by-step explanation:
Mary has a total of £400 to start off with.
In order to calculate the amount she gives to her mother, we must multiply 400 by .5 (the decimal equivalent of 50%), which leaves us with £200 to her mother.
Do the same with her sister; multiply 400 by .2 (the decimal equivalent of 20%), which leaves us with £80.
To figure out what she is left with, £400 - 200 - 80 = £120. Mary is left with £120.
Mary will have £120 with her, her mother will have £200 and her sister will have £80.
What is percentage?Percentages are fractions with 100 as the denominator. It is the relation between part and whole where the value of whole is always taken as 100.
Given that, Mary won £400.
She gave 50% to her mother, 20% to her sister and rest she kept with herself,
So,
The amount her mother got =
50% of £400 = 1/2 × 400 = 200
Therefore, her mother got £200.
The amount her sister got =
20% of £400 = 1/5 × 400 = 80
Therefore, her sister got £80.
The amount Mary have = 400 - (200+80) = 400 - 280 = £120
Hence Mary will have £120 with her.
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Natalie and johnathan are asked to write an expression equivalent to 2(2x + 2y
The expression equivalent to 2(2x + 2y) are,
⇒ 4 (x + y)
Or, (4x + 4y)
What is an expression?An expression which is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division is called an mathematical expression.
Given that;
The expression is,
⇒ 2 (2x + 2y)
Since, Natalie and Johnathan are asked to write an expression equivalent to 2(2x + 2y).
Hence, We get;
⇒ 2 (2x + 2y)
Take 2 as common;
⇒ 2 × 2 (x + y)
⇒ 4 (x + y)
⇒ 4x + 4y
Thus, The expression equivalent to 2(2x + 2y) are,
⇒ 4 (x + y)
Or, (4x + 4y)
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2
A geometric sequence is shown below.
Which function describes this sequence?
5, 11, 29, 83, ...
These values match the given sequence, so the function that describes the sequence is:
an = 5(2.2 + 0.8182n)ⁿ⁻¹
What is the meaning of the word "function"?According to one definition, a function is a relationship between a number of inputs where each input has exactly one output.
To find the function that describes the given geometric sequence, we need to find the common ratio r. We can do this by dividing any term in the sequence by the previous term:
11/5 = 2.2
29/11 = 2.63636...
83/29 = 2.86206...
We can see that the common ratio is increasing, which suggests that the sequence is not a perfect geometric sequence. However, the differences between the ratios are getting smaller, so we can approximate the sequence as a geometric sequence with a changing common ratio.
Let's use the first two terms of the sequence to find an initial approximation for the common ratio:
r ≈ 11/5 = 2.2
Then, we can write the nth term of the sequence as:
an = 5(2.2)ⁿ⁻¹
However, we noticed that the common ratio is increasing, so we need to adjust our formula to account for this. Let's try a formula where the common ratio is a linear function of n:
an = 5(2.2 + 0.8182n)ⁿ⁻¹
Plugging in n = 1, 2, 3, and 4, we get:
a1 = 5(2.2 + 0.8182(1))⁰ = 5
a2 = 5(2.2 + 0.8182(2))¹ ≈ 11
a3 = 5(2.2 + 0.8182(3))² ≈ 29
a4 = 5(2.2 + 0.8182(4))³ ≈ 83
These values match the given sequence, so the function that describes the sequence is:
an = 5(2.2 + 0.8182n)ⁿ⁻¹
where n is the index of the term in the sequence.
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pls asap i need this
The simplest form of the given expression x will be 42.
What is polynomials?Using variables and coefficients, polynomials are algebraic expressions. The term "indeterminates" is sometimes used to describe variables. The terms Poly and Nominal, which together signify "many" and "terms," make up the word polynomial.
When exponents, constants, and variables are combined using mathematical operations like addition, subtraction, multiplication, and division, the result is a polynomial (No division operation by a variable). The expression is categorized as a monomial, binomial, or trinomial based on the number of terms it contains.
Here we assume that no of suitcases be x
So, 7/24 = x/144
24x = 1008
x = 42.
Hence the simplest form of the given expression x will be 42.
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 If triangle ABC ~ triangle AVW, find the values of x
The value of x that satisfies the proportion is x = 7.5.
Since triangle ABC ~ triangle AVW, we know that their corresponding sides are proportional. In other words:
AB/AV = BC/VW = AC/AW
We are given that AB = 8, BC = 5, AC = 7, AV = 12, and VW = x. We need to find the value of x that satisfies the proportion above.
Using the first two ratios, we get:
AB/AV = BC/VW
8/12 = 5/x
Multiplying both sides by 12x, we get:
8x = 60
x = 7.5
Now, we can use the third ratio to check our answer:
AB/AV = AC/AW
8/12 = 7/AW
Multiplying both sides by AW, we get:
8AW = 84
AW = 10.5
We can now check that the ratios are all equal:
AB/AV = BC/VW = AC/AW
8/12 = 5/7.5 = 7/10.5
Simplifying each fraction, we get:
2/3 = 2/3 = 2/3
Therefore, the value of x that satisfies the proportion is x = 7.5.
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Prove that the medial triangle of a given triangle ABC
has sides parallel to and half the length of the sides of triangle
ABC.
The medial triangle of a given triangle ABC has sides parallel to and half the length of the sides of triangle ABC.
To prove that the medial triangle of a given triangle ABC has sides parallel to and half the length of the sides of triangle ABC, we can use the following steps:
Draw triangle ABC and label its vertices as A, B, and C.
Find the midpoints of the sides of triangle ABC. Let's call these midpoints D, E, and F.
Draw the medial triangle DEF, connecting the midpoints of the sides of triangle ABC.
We need to prove that the sides of triangle DEF are parallel to the sides of triangle ABC. To do this, we can use the fact that the midpoints of the sides of a triangle divide the sides into two segments of equal length.
Since the midpoints of the sides of triangle ABC are D, E, and F, we know that AD = DB, BE = EC, and CF = FA.
We can also use the fact that if two lines are parallel and the corresponding angles are equal, then the corresponding sides are also parallel.
Since AD = DB and BE = EC, we know that angle ADB = angle BEC and angle BDE = angle CEF.
Therefore, we can conclude that the sides of triangle DEF are parallel to the sides of triangle ABC.
To prove that the sides of triangle DEF are half the length of the sides of triangle ABC, we can use the fact that the midpoints of the sides of a triangle divide the sides into two segments of equal length.
Since the midpoints of the sides of triangle ABC are D, E, and F, we know that AD = DB, BE = EC, and CF = FA.
Therefore, we can conclude that the sides of triangle DEF are half the length of the sides of triangle ABC.
So, the medial triangle of a given triangle ABC has sides parallel to and half the length of the sides of triangle ABC.
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equation be multiplied? What will be the result after completing the multiplication? 7x+3y=-8 4x-y=-13
65x + 17y = -108 is the result of completing the multiplication 7x+3y=-8 4x-y=-13 of two equations together.
To find the result of multiplying these two equations, we need to use the distributive property. The distributive property states that a(b + c) = ab + ac. In this case, we can distribute the 7 and the 4 across the equations:
7(7x + 3y) = 7(-8)
4(4x - y) = 4(-13)
Simplifying these equations gives us:
49x + 21y = -56
16x - 4y = -52
Now, we can combine like terms:
65x + 17y = -108
This is the result of multiplying the two equations together. We can check our work by plugging in values for x and y and seeing if the equation holds true. For example, if x = 1 and y = 2, then the equation becomes:
65(1) + 17(2) = -108
65 + 34 = -108
99 = -108
This is not true, so we know that our answer is correct.
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A cereal company fills boxes with 16 ounces of cereal. The acceptable percent error in filling a box is 2.5%. Find the least and the greatest acceptable weights.
The least acceptable weight is
ounces.
The greatest acceptable weight is
ounces.
Answer:
Least acceptable weight= 15.6 ounces
and Greatest acceptable weight=16.4 ounces
Step-by-step explanation:
A cereal company fills boxes with 16 ounces of cereal.
The acceptable percent error in filling a box is 2.5%.
i.e. the error in decimal is: 2.5/100 x 16 = 25/1000 x 16 = 0.4
Hence,
the least acceptable weight is obtained by subtracting the actual amount with the error.
16-0.4=15.6 ounces.
and the greatest acceptable weight is obtained by adding the error to the actual weight.
16+0.4=16.4 ounces
Hence,
Least acceptable weight= 15.6 ounces
and Greatest acceptable weight=16.4 ounces.
Math question 12 help
Answer:
It's neither of them. The function is neither odd nor even
The regular price of a laptop computer is $865. 0. This week, it is on sale for $812. 00 off. What is the sale price of the computer?
The sale price of the laptop computer is $53.00. We subtracted the discount amount from the original price.
Discount is a reduction in the price of a product or service that is offered to customers by a seller, usually as an incentive to increase sales or clear out inventory. It is typically expressed as a percentage of the original price.
To calculate the sale price of the laptop computer, we need to subtract the discount amount from the original price.
Discount amount = Regular price - Sale price
Discount amount = $865.00 - $812.00
Discount amount = $53.00
Therefore, the sale price of the laptop computer is $812.00.
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Marco Edwards Question 6 - 3 Points Cob 24, 8:57:21 AM Find the slope of a line perpendicular to the line whose equation is 3x+y=8. oully simplify your answer. Answer: Submit Answer
The slope of a line perpendicular to the line whose equation is 3x+y=8 is 1/3.
The slope of a line perpendicular to the line whose equation is 3x+y=8 can be found by first finding the slope of the given line and then taking the negative reciprocal of that slope.
To find the slope of the given line, we can rearrange the equation to solve for y:
3x+y=8
y=-3x+8
Now we can see that the slope of the given line is -3. To find the slope of a line perpendicular to this one, we take the negative reciprocal of -3, which is 1/3.
Therefore, the slope of a line perpendicular to the line whose equation is 3x+y=8 is 1/3.
Answer: 1/3
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NEEDD HELP ASAP WILL MARK BRAINLIST!! Olivia and Abby are donating part of their allowance to charity. Abby is giving $10
less than twice the amount that Olivia is giving. In total, they are donating $125 to
charity. How much money is Abby giving?
$110
$68
$52
$75
$80
$98
Answer:
80
Step-by-step explanation:
45 x 2 = 90
90 - 10 = 80
80 + 45 = 125
Answer:
$80
Step-by-step explanation:
Perform long division on the following, please show work:
a) 33.143 / 100
b) 175.876 / 0.01
a) 0.33143; b) 17586.76
a) 33.143 / 100
33.143 ÷ 100
= 0.33143
b) 175.876 / 0.01
175.876 ÷ 0.01
= 17586.76
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Determine the coefficient and the degree of each term in the polynomial. 8x^(2)+6x+8
The coefficients of the terms in the polynomial are 8, 6, and 8, and the degrees are 2, 1, and 0
The coefficient of a term in a polynomial is the number that is multiplied by the variable. The degree of a term is the exponent of the variable. In the polynomial 8x^(2)+6x+8, there are three terms:
- The first term is 8x^(2). The coefficient of this term is 8, and the degree is 2.
- The second term is 6x. The coefficient of this term is 6, and the degree is 1.
- The third term is 8. The coefficient of this term is 8, and the degree is 0 (since there is no variable).
Therefore, the coefficients of the terms in the polynomial are 8, 6, and 8, and the degrees are 2, 1, and 0.
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1) Keith decided to look at new and used SUVs. Keith found a used SUV for $20000. A new SUV is $25000, so what percent of the price of a new SUV does Keith pay for a used SUV? Round your answer to the nearest whole number if necessary.
Keith pays about 80% of the price of a new SUV for the used SUV.
To find what percent of the price of a new SUV Keith pays for a used SUV, we need to divide the price of the used SUV by the price of the new SUV and then multiply by 100 to express the answer as a percentage:
used SUV price / new SUV price * 100%
Substituting the given values, we get:
$20,000 / $25,000 * 100% ≈ 80%
So Keith pays about 80% of the price of a new SUV for the used SUV. Rounded to the nearest whole number, this would be 80%.
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1. Ben joins a book club. He pays $12 for each book and $5 for shipping and handling
charges for each order.
a.Name the quantities that change in this problem situation and the quantities that
remain constant. Determine which quantity is independent and which quantity
is dependent.
B. Create a table of values to represent the total cost if Ben orders 1 or 2 books or
spends $41, $65, or $125.
Answer:
A. The quantities that change in this problem situation are the number of books Ben orders and the total cost. The quantities that remain constant are the cost per book ($12) and the shipping and handling charge per order ($5).
The independent variable is the number of books Ben orders, as this is the variable that Ben has control over and chooses to change. The dependent variable is the total cost, as it depends on the number of books Ben orders.
B.
(imagine this as a chart)
Number of books Total cost
1 $17
2 $29
3 $41
5 $65
10 $125
----------------------------------------------------------------------------------------------------------
To create this table, we used the formula:
Total cost = (Cost per book x Number of books) + Shipping and handling charge
For example, when Ben orders 3 books, the total cost is:
Total cost = ($12 x 3) + $5 = $41
Similarly, when Ben spends $65, the number of books he can order is:
Number of books = (Total cost - Shipping and handling charge) / Cost per book
Number of books = ($65 - $5) / $12 = 5
And so on for the other values in the table.
Answer:
See below
Step-by-step explanation:
Let x be he cost per book and y be the total cost including shipping and handling.
The relevant equation is
y = 12x + 5
A. Variables are number of books ordered(x) and total cost(y)
The constant is the shipping and handling cost
Since the total cost depends on the number of books ordered, the independent variable x = number of books
The total cost y is the dependent variable
--------------------------------------------------------------------------------------
B. Cost of 1 or 2 books can be found by plugging in x = 1 and x =2 into the equations and solving for y
Total Cost of 1 book = 12(1) + 5 = $17
Total cost of 2 books = 12(2) + 5 = 24 + 5 = $29
To compute the number of books that can be ordered for different total cost amounts is obtained by substituting for y and solving for x
For $41:
41 = 12x + 5
41 - 5 = 12x
36 = 12z
x = 36/12 = 3 books
For $65:
65 = 12x + 5
65 - 5 = 12x
60 = 12x
x = 60/12 = 5 books
For $125:
125 = 12x + 5
125 - 5 = 12x
120 = 12x
x = 120/12 = 10 books
Here is the table
Number Total Cost(y)
of books (x)
1 $17
2 $29
3 $41
5 $65
10 $125
what does x equal to? 10x+48=18x+-34
Answer: 41/4 or 10.25 or 10 1/4
Step-by-step explanation:Exact Form:
x
=
41
4
Decimal Form:
x
=
10.25
Mixed Number Form:
x
=
10
1
4
Question 3 For each of the following, explain whether it is always) true or (possibly) false. If true, you must explain why. If false, you must give a concrete counterexample (with numbers).
a). (1.5pts) If the linear system Ax = b has infinitely many solutions, then 6 is a linear combination of the columns of A. b). (1.5pts) If a 3x3 matrix A has rank 2, then Null(A) is a plane through the origin. c). (1.5pts) If {ū, v} is linearly dependent then so is {ü, v, w}.
a) This system has infinitely many solutions, but 6 is not a linear combination of the columns of A, which are [2, 3] and [4, 6].
b) The null space of the matrix, which is the set of all solutions to the homogeneous equation Ax = 0, is a subspace of dimension 3 - 2 = 1, which is a line through the origin.
c) The set {ū, v} is linearly independent, but the set {ü, v, w} is linearly dependent, as w can be written as a linear combination of ū and v (w = ū + v).
a). (1.5pts) This statement is possibly false. It is not always true that if the linear system Ax = b has infinitely many solutions, then 6 is a linear combination of the columns of A. A concrete counterexample would be the linear system:
2x + 3y = 6
4x + 6y = 12
This system has infinitely many solutions, but 6 is not a linear combination of the columns of A, which are [2, 3] and [4, 6].
b). (1.5pts) This statement is always true. If a 3x3 matrix A has rank 2, then Null(A) is a plane through the origin. This is because the rank of a matrix is the number of linearly independent columns in the matrix, and if the rank is 2, then there are 2 linearly independent columns in the matrix. This means that the null space of the matrix, which is the set of all solutions to the homogeneous equation Ax = 0, is a subspace of dimension 3 - 2 = 1, which is a line through the origin.
c). (1.5pts) This statement is possibly false. It is not always true that if {ū, v} is linearly dependent then so is {ü, v, w}. A concrete counterexample would be the vectors ū = [1, 0], v = [0, 1], and w = [1, 1]. The set {ū, v} is linearly independent, but the set {ü, v, w} is linearly dependent, as w can be written as a linear combination of ū and v (w = ū + v).
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{ 4.82/ 7 } 358.9 / 7 Quotient
Answer:
51.2
Step-by-step explanation:
By dividing :0
Mr. Sonny's science class is calculating the average number of blinks per minute. Jan blinks 54 times in 3 minutes. What is her blinking rate, in blinks per minute?
Answer: 18 blinks per minute
Step-by-step explanation: so for this you take 54 and divide it by three
54/3=18
blinks per minute=18
Answer:
18
Step-by-step explanation:
54\3=18
therefore Jan blinks 18 times per minutes
The height of a pole is 27 feet. A snake is curled up at a distance of 20 ft from the foot of
the pole. The snake looks at the top most point of the pole. Find the angle of elevation
made by the snake and the top of the pole. Round to the nearest tenth of a degree.
The angle of elevation is _____ degrees.
Help
The angle οf elevatiοn is 63.4 degrees.
What is angle οf elevatiοn?Angle οf elevatiοn is the angle between the hοrizοntal line οf sight and an οbject abοve the οbserver. It is measured with an angle starting frοm the hοrizοntal line and increasing in the upward directiοn. It is alsο knοwn as the angle οf elevatiοn οr inclinatiοn. The angle οf elevatiοn is used in navigatiοn, astrοnοmy and trigοnοmetry.
Tο find the angle οf elevatiοn, we can use the fοrmula fοr finding angles in a triangle. This fοrmula states that the sum οf all angles in a triangle is 180 degrees. Tο sοlve fοr the angle οf elevatiοn, we need tο begin by first finding the length οf the οppοsite side οf the triangle. This is dοne by subtracting the distance οf the snake frοm the fοοt οf the pοle frοm the height οf the pοle.
Therefοre, the length οf the οppοsite side οf the triangle is 7 feet. Nοw, we can use the tangent fοrmula tο sοlve fοr the angle οf elevatiοn. This fοrmula states that the tangent οf an angle is equal tο the length οf the οppοsite side divided by the length οf the adjacent side.
Let's find the angle of elevation.
tan ∅ = opposite / adjacent
where
∅ = angle of elevation
Therefore,
tan ∅ = 27 / 20
∅ = tan⁻¹ 1.35
∅ = 53.471144633
∅ = 53.5 degrees
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at a local department store shirts were sold for 15 each.
This price was 80% of their regular price. What was the original price?
Therefore, the original price of the shirts was $18.75 each.
A mathematical equation: what does it mean?An equality on both sides of the equal to sign signifies a mathematical equation, which is a relationship between two expressions. Here is an example of an equation: 3y = 16.
If the selling price of the shirts was 80% of their regular price, then we can use the following equation to find the original price:
Original price * 0.8 = Selling price
Let's substitute the given values into the equation:
Original price * 0.8 = 15
To solve for the original price, we need to isolate it on one side of the equation. We can do this by dividing both sides by 0.8:
Original price = 15 ÷ 0.8
Original price = 18.75
Therefore, the original price of the shirts was $18.75 each.
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What is the value of x???
Eddie says a property of trapezoids is that they have 2 pairs of opposite sides that are parallel. Lacy disagrees. She says Eddie's statement describes an attribute of this trapezoid, not a property of all trapezoids. Who is correct? Explain.
Answer: Lacy is correct. Eddie's statement describes an attribute of a specific trapezoid, not a property of all trapezoids.
A trapezoid is defined as a quadrilateral with at least one pair of parallel sides. Therefore, it is true that all trapezoids have at least one pair of parallel sides. However, not all trapezoids have 2 pairs of opposite sides that are parallel.
The trapezoid that Eddie is describing is a special type of trapezoid called an isosceles trapezoid. An isosceles trapezoid has two pairs of opposite sides that are parallel and congruent legs. However, not all trapezoids are isosceles trapezoids.
Therefore, Lacy is correct in stating that Eddie's statement describes an attribute of a specific trapezoid, not a property of all trapezoids.
Step-by-step explanation: