Equation of the line passing through the point of (-20, 4) and perpendicular to the line [(2x + 5y) = 10] will be [2y = (5x + 108)].
As per the question statement, a line passes through the point of (-20, 4) and is perpendicular to the line [(2x + 5y) = 10].
We are required to determine the equation of the above-mentioned line.
To solve this question, we need to know about the formula to express the point-slope form of a line, which goes as, [(y - y₁) = m(x - x₁)],
where (x₁, y₁) is a point through which the line passes, and "m" is the slope of the line.
Also, we need to know about the mathematical fact that, the product of the slopes of two perpendicular lines equate to (-1), i.e., if (m₁ and m₂) are the slopes of two perpendicular lines, then [(m₁ * m₂) = (-1)].
Converting [(2x + 5y) = 10] into the point-slope form of line, we get,
(2x + 5y) = 10
or, [5y = {(-2x) + 10}]
or, [y = {(-2/5)x + 2}]
Therefore, Slope of the line [(2x + 5y) = 10] is (-2/5).
Hence, slope of the line perpendicular to [(2x + 5y) = 10] is [-1/(-2/5)], i.e.,
Slope of the line perpendicular to [(2x + 5y) = 10] is (5/2).
Now, using [m = (5/2)] and (x₁, y₁) as (-20, 4), equation of the line will be
[(y - 4) = (5/2){x - (-20)}]
or, [(y - 4) = (5/2)(x + 20)]
or, [(y - 4) = (5/2x) + 50]
or, [2(y - 4) = 5x + 100]
or, [(2y - 8) = (5x + 100)]
or, [2y = (5x + 108)]
Equation of a Line: The equation of line is an algebraic form of representation of the set of points, which together form a line in the cartesian coordinate system, as a set of variables x, y to form an algebraic equation, which is referred to as an equation of a line.To learn more about Equation of a Line, click on the link below.
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Russell works at a football concession stand selling drinks for $2 and bags of chips for $3. At one football game, Russell makes a total of $246 and sells a total of 100 drinks and bags of chips.
The number of chips and drinks are 46 chips and 56 drinks respectively.
How to calculate the values?Let the number of drinks be d.
Let the number of chips be c.
From the information, he works at a football concession stand selling drinks for $2 and bags of chips for $3 and he makes a total of $246 and sells a total of 100 drinks and bags of chips.
This will be:
c + d = 100 ........ i
2d + 3c = 246 ........ ii
From equation i, c = 100 - d
Substitute this into equation ii
2d + 3c = 246
2d + 3(100 - d) = 246
2d + 300 - 3d = 246
Collect like terms
2d - 3d = 246 - 300
-d = -54
d = 54
Number of drinks = 54
Since c + d = 100
c + 54 = 100
c = 100 - 54 = 46
Chips = 46
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Complete question
Russell works at a football concession stand selling drinks for $2 and bags of chips for $3. At one football game, Russell makes a total of $246 and sells a total of 100 drinks and bags of chips. Calculate the number of drinks and chips sold.
(CO 5) A company claims that its heaters last more than 5 years. Write the null andalternative hypotheses and note which is the claim.O H: = 5, H: 4 < 5 (claim)wO Hou = 5 (claim), H: 25O Hou = 5, H.: > 5 (claim)O Hou > 5 (claim), H: 35
Given:
The company claims that its heaters last more than 5 years.
Find: null alternative hypotheses.
Sol:
[tex]H_0:\mu=5,H_a|:\mu>5\text{ \lparen claim\rparen}[/tex]What is an equation of a line that passes through the given point and is perpendicular to the given line. (-2, 5) and x = 3
The equation of the line passing from found as y = 5.
What is referred as the slope of line?The slope of the line is a measurement of its steepness and direction. A line's slope is classified as the change in y coordinate with regard to the shift in x coordinate. The net y coordinate change is Δy, whereas the net x coordinate change is Δx. So the transformation in y coordinate in relationship to the shift in x coordinate is written as m.The formula for finding the slope is;
m = Δy/Δx
Where, m is the slope
The given equation of line is;
x = 3 comparing it with standard form of equation;
y = mx + c
As, the equation is a straight line passing parallel to x axis, the slop of line x = 3 is ∞.
Thus, m₁ = ∞.
Now, let the slops of the line passing from (-2, 5) is m₂,
The, as both line are perpendicular.
Thus,
m₁ x m₂ = -1
m₂ = -1/∞
m₂ = 0
The equation of line is found by
y - y₁ = m₂(x - x₁)
Put the values;
y - 5 = 0(x + 2)
y = 5
Therefore,the equation of the line passing from found as y = 5.
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Write the system of equations as a matrix equation AX=B, with A as the coefficient matrix of the system.x+2y=−112x+6y=−30
The matrix equation is given to be:
[tex]AX=B[/tex]where A is the coefficient matrix of the system.
To get the value of X, we need to multiply both sides of the equation by the inverse of A, since:
[tex]A\cdot A^{-1}=1[/tex]Therefore, we have:
[tex]X=A^{-1}\cdot B[/tex]he TLAST OPTION is correct.
if explain this question to me give those crown thingy points
it two pages
please help 20points
Answer:
1.) 12 yards (the one you selected is correct)
2.) 1.1 with the bar over the decimal (the one you selected is correct)
Step-by-step explanation:
1.) It looks like Aaron dropped back 5 yards from the line of scrimmage and threw to the 7 yard line for a total of 12 yards.
2.) If you enter 10 divided by 9 into your calculator you will get back 1.11111111111111 that keeps repeating for how ever many digits your calculator can show. We write this as 1.1 with the bar over the decimal.
the length of a rectangle is four times it's width. if the perimeter is at most 106 centimeters, what is the greatest possible value for the width?
Lenght of a rectangle: L
Widht of the rectangle: W
Perimeter of the rectangle: P
length of a rectangle is four times it's width: L = 4W
Perimeter is at most 106: P <= 106
Perimeter is 2L + 2W: P = 2L + 2W
P <= 106
if we use the value of P = 2L + 2W, we can write:
2L + 2W <= 106
Since L = 4W, then we can write this equation:
2L + 2W <= 106
2(4W) + 2W <= 106
8W + 2W <= 106
10W <= 106
W <= 106/10 = 10.6
W <= 10.6
Therefore, the greatest possible value for the width is 10.6
Answer:
10.6
A phone keeps track of the number of steps taken and the distance traveled. based on the information in the table, is there a proportional relationship between the two qualities?
there is no proportional relationship between the two qualities
Explanation:For two quantities to be proportional, it must follow the formula:
y = kx
where k = proiportionality constant
k = y/x
if y = 950, x = 1
inserting in the equation:
950= 1k
k = 950
The equation becomes: y = 950 × x
We check for other values. if k is the same, it is proportional
when y = 2852, x = 3
2852 = k × 3
k = 2852/3 = 950.67
when y = 5.1, x = 4845
4845 = k × 5.1
k = 4845/5.1 = 950
From the above, the value of k which is different is for the 2nd value.
Since they are not all the same, we say there is no proportional relationship between the two qualities
Use the sinking fund formula shown to the right to determine the monthly payment needed to accumulate 270,000 with 5% interest or combine did monthly for 28 years The monthly invested payment is 
Using the sinking fund formula, the monthly payment needed to accumulate 270,000 with 5% interest or combine did monthly for 28 years, the monthly invested payment is 369.65.
What is sinking fund formula?A sinking fund, also referred to as a sinking fund, is defined by its name. Fundamentally speaking, it is built to sink. Although there are some similarities between a sinking fund and a reserve fund, their purposes differ significantly. Unlike reserve funds, which typically serve no particular purpose, sinking funds have a designated purpose.
Simply put, a reserve fund is a company's method of saving its surplus funds. There are numerous uses for reserve funds. They can be applied to a variety of costs, including those related to emergency situations, asset purchases, business expansions, and capital expenditures.
Sinking fund (A) = P × [tex]\frac{(1+r/n)^{tn}-1}{r/n}[/tex]
Where
A – Money accumulated
P – Periodic contribution,
r – Interest rate
t – Number of years
n – Number of payments per year
So, periodic contribution P = A / (((1 + r / n) ^ (t * n) – 1) / (r / n))
Here given that,
A – 270,000
r – 5%
t – 28 years
n – 12
P – To find
Substituting the values we get
P = [tex]270000/(((1+0.05/12)^{\left(28\times 12\right)}-1)/(0.05/12))[/tex]
P = 369.649667
P = 369.65
Therefore, the monthly payment needed to accumulate 270,000 with 5% interest or combine did monthly for 28 years, the monthly invested payment is 369.65.
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pls help i dont get it
Create an In-Out table with your findings. Make a table with the number of bagels she has when she gets home as the In and the number she had to start with as the Out.
How does the solution to Marcella’s Bagels depend on the number of bagels she has when she gets home?Try several numbers for the number she has when she arrives home to explore this expansion, such as 3, 4, 5, or even 0. You should presume that, other from this number, everything in the problem is the same as it was in the original problem.
Create an In-Out table with your findings. Make a table with the number of bagels she has when she gets home as the In and the number she had to start with as the Out. Once you've added numerous entries to the table, search for a connection between the Out and the In before attempting to identify a rule that can explain this connection.
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Use a law of exponents to write (-3mn^5)^4 as a product of powers
The exponent is 81[tex]m^{} 4[/tex] [tex]n^{20}[/tex]
An exponent is a quantity representing the power to which a given number or expression is to be raised, usually expressed as a raised symbol beside the number or expression.
Here we have to determine the sign for exponential or radical expression
(-3m[tex]n^{5}[/tex])^4
Simplify using the exponent rule with the same exponent [tex](ab)^{n}[/tex] = [tex]a^{n}[/tex] . [tex]b^{n}[/tex]
Similarly
(-3m[tex]n^{5}[/tex])^4
= [tex](-3)^{4}[/tex] . [tex]m^{4}[/tex]. [tex](n^{5} )^{4}[/tex]
Now using the exponent power rule [tex](a^{n} )^{m}[/tex] = [tex]a^{nm}[/tex]. We get
= 81 . [tex]m^{4}[/tex].[tex]n^{20}[/tex]
Therefore the exponent as a product of power is 81[tex]m^{4} n^{20}[/tex].
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CONFUSED ON THIS PLEASE HELP!! QUESTION DOWN BELOW!
many thanks!!!
Answer:
(a) ∠e +∠d = 180° is false
Step-by-step explanation:
You want to know which angle expression is not true.
Angle SolutionWe can figure the measures of all of the unknown angles, then check the given expressions.
Angles 'a' and 130° are corresponding angles, so congruent:
a = 130°
Angles 'a' and 'e' are vertical angles, so congruent:
e = a = 130°
Angle 'd' and 62° are vertical angles, so congruent:
d = 62°
Angles 'b' and 'd' are corresponding angles, so congruent:
b = d = 62°
Angles 'f' and 62° are corresponding angles, so congruent:
f = 62°
Angles 'c' and 130° are a linear pair, so supplementary:
c + 130° = 180°
c = 50° . . . . . . subtract 130°
Statement check(a) ∠e +∠d = 180° ⇒ 130° +62° = 180° . . . . false
(b) ∠d +∠b = 124° ⇒ 62° +62° = 124° . . . . true
(c) ∠a +∠c = 180° ⇒ 130° +50° = 180° . . . . true
(d) ∠ 180° -∠f = 118° ⇒ 180° -62° = 118° . . . . true
Four times the difference of some number and 3 amounts to the quotient of 144 and 12.
Written as an equation
The equation that can be derived is [tex]4(x-3)=12[/tex]
Given
Four times the difference of some number and 3 amounts to the quotient of 144 and 12.
Let us say some number is x
Quotient of 144 and 12,
Quotient = [tex]\frac{144}{12}[/tex]
Quotient = 12
Four times the difference of x and 3 is as follows
[tex]4(x-3)[/tex]
Writing this in the form of an equation we get
[tex]4(x-3)=12[/tex]
Hence the equation is obtained, also solving the equation for x
[tex]4x-12=12[/tex]
[tex]4x = 24[/tex]
[tex]x=\frac{24}{4}[/tex]
[tex]x=6[/tex]
Hence the equation for given conditions is obtained.
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Petrolyn motor oil is a combination of natural oil and synthetic oil. It contains 7 liters of natural oil for every 4 liters of synthetic oil. In order to make 671 liters of Petrolyn oil, how many liters of synthetic oil are needed?
For every 4 liters of synthetic oil, there are 7 liters of natural oil. 671 liters of Petrolyn oil. 244 liters of synthetic oil is needed and 427 liters of natural oil is needed.
Given that,
Petrolyn motor oil is a blend of synthetic and natural oil. For every 4 liters of synthetic oil, there are 7 liters of natural oil. 671 liters of Petrolyn oil are needed to produce it.
We have to find how much synthetic oil, in liters, is required.
According to the given values;
The ratio of natural to synthetic oil
= 7:4
If 671 liters have to be made then,
By adding 7+4=11
So, 7/11 of 671 liters will be = 427 liters of natural oil
and, 4/11 of 671 liters will be = 244 liters of synthetic oil
Therefore,244 liters of synthetic oil is needed and 427 liters of natural oil is needed.
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A number is divided by 3, and then 4 is added to the quotient. The result is 8. Find the number
Answer: 4/3 or 1.33
Step-by-step explanation:
Rounding in the calculation of monthly interest rates is discouraged. Such rounding can lead to answers different from those presented here. For long-term loans, the differences may be pronounced.
Several years ago Bill got a home mortgage of $116,000 with a term of 30 years at an APR of 9%. Use the Monthly Payments for Long-Term Loans Rule of Thumb to estimate his monthly payment.
$
Compare this estimate with what the monthly payment formula gives. (Round your answer to the nearest integer.)
The actual monthly payment is about $
greater than the estimated payment.
Bill's projected monthly payment under the Monthly Payments for Long-Term Loans using the Rule of Thumb is $870.00.
Bill's exact monthly payment using the Monthly Payments calculation is $933.36.
The real monthly payment is approximately $63.36 more than the predicted cost.
Simple procedures may be used to calculate the Monthly Payments for Long-Term Loans Rule of Thumb.
To begin, divide the annual percentage rate (APR) by 12 to obtain the monthly percentage rate (MPR).
Second, calculate the MPR on the principal amount. The product is the estimated monthly payment, which is similar to the real monthly payment and was computed using a financial calculator below.
Estimated Monthly Payment:
Home Mortgage = $116,000
Term of loan = 30 years
APR = 9%
Monthly interest rate = 0.0075 (0.09/12)
Estimated monthly payment based on the Monthly Payments for Long-Term Loans Rule of Thumb
($116,000 x 0.0075) = $870
Actual Monthly Payment Formula:
N (# of periods) = 360 months (30 x 12)
I/Y (Interest per year) = 9%
PV (Present Value) = $116,000
FV (Future Value) = $0
The outcome is given as:
PMT = $-933.36
Sum of all periodic payments = $-336,010.40
Total Interest = $220,010.40
Actual monthly payment = $933.36
Estimated monthly payment 870.00
Difference = $63.36
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You are on an academic committee tasked to evaluate state employment math test questions. The following question has come to the attention of the committee:
"Each of the four digits 3, 4, 5, and 8 is placed in one of the boxes to form a fraction. The numerator and the denominator are two-digit whole numbers. What is the smallest value of all the common fractions that can be formed? Express your answer as a reduced fraction."
There are 4 boxes arranged in a square with 2 boxes side-by-side directly on top of the other 2 boxes. There is a horizontal line representing a fraction bar separating the top 2 boxes from the bottom 2 boxes.
Some committee members contend this is not a valid question.
Solve the problem. (If there is no solution, enter NO SOLUTION.)
Explain the solution to prove (or disprove) the question's validity.
The question is valid because to make the fraction as small as possible, you make the numerator as small as possible and make the denominator as large as possible.The question is valid because to make the fraction as small as possible, you make the numerator as large as possible and make the denominator as small as possible. The question is valid because to make the fraction as small as possible, you make both the numerator and the denominator as small as possible.The question is valid because to make the fraction as small as possible, you make both the numerator and the denominator as large as possible.The question is not valid because there is no solution.
Answer:
no solution that's my answer
The valid solution to the problem is: The smallest value of all the common fractions that can be formed using the digits 3, 4, 5, and 8 is 34/85.The smallest value of all the common fractions that can be formed using the digits 3, 4, 5, and 8 is 34/85.
Let's solve the problem step by step to determine the smallest value of all the common fractions that can be formed using the digits 3, 4, 5, and 8. We'll express the answer as a reduced fraction.
We have 4 boxes arranged in a square as described:
A B
C D
The fraction can be represented as AB/CD.
To make the fraction as small as possible, we need to arrange the digits in a specific way. We want to minimize the numerator (AB) and maximize the denominator (CD).
For the numerator (AB), we want the smallest two-digit number. The smallest two-digit number that can be formed using the digits 3, 4, 5, and 8 is 34.
For the denominator (CD), we want the largest two-digit number. The largest two-digit number that can be formed using the digits 3, 4, 5, and 8 is 85.
Therefore, the smallest fraction that can be formed is 34/85.
To ensure that this fraction cannot be further reduced, we need to check if 34 and 85 share any common factors greater than 1. If they do not share any common factors other than 1, then the fraction is in its reduced form.
Checking for common factors:
Factors of 34: 1, 2, 17, 34
Factors of 85: 1, 5, 17, 85
The only common factor is 1, which means the fraction 34/85 is already in its reduced form.
Thus, the valid solution to the problem is:
The smallest value of all the common fractions that can be formed using the digits 3, 4, 5, and 8 is 34/85.
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simplify 5x -6y - x + 3y
Step-by-step explanation:
collect like terms
[tex]5x - x - 6y + 3y \\ 4x - 3y [/tex]
Which of the following expression gives a fine in dollars for a book that is n days overdue
The rate is given by
[tex]\text{ \$0.10 per day}[/tex]and since the one-time charge is $0.25, the expression is
[tex]0.25+0.10n[/tex]where n denotes the number of days. Then, the answer is the second option
Evalúe the limit. Show steps
After evaluating the limit we have came to find that the limit of [tex]\lim_{x\rightarrow 1 }\frac{x-2}{x^2-10x + 25}[/tex] as x approaches 1 is −0.0625
What is limit?In mathematics, a limit is the value that a function, sequence, or index approaches as an input or as an index approaches a specific value. Limits are crucial to calculus and mathematical analysis and are necessary for the definitions of continuity, derivatives, and integrals.
The idea of a limit of a sequence is further generalized to include the idea of a limit of a topological network, in addition to sharing a connection with the category theory concepts of limit and direct limit.
A limit of a function is typically expressed in formulas as
[tex]{\displaystyle \lim _{x\to c}f(x)=L,}[/tex]
To find the limit
⇒ [tex]\lim_{x\rightarrow 1 }\frac{x-2}{x^2-10x + 25}[/tex]
Evalúe 2 as x
⇒ [tex]\frac{1-2}{1^2-10(1) + 25}[/tex]
⇒ [tex]\frac{-1}{-9 + 25}[/tex]
⇒ [tex]\frac{-1}{16}[/tex]
⇒−0.0625
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What is [tex]lim_{x-0} (f(f(x))[/tex] closest to?
a. DNE
b. 1
c. 3
d. 5
Answer:
c. 3
Step-by-step explanation:
You want to know the limit of the composite function f(f(x)) as x approaches zero.
LimitThe function f(x) can be evaluated at x=0. The graph shows the value to be ...
f(0) = 2
The function f(x) can also be evaluated at x=2. The graph shows the value to be ...
f(2) ≈ 3
The nearest value to f(f(0)) is 3.
__
Additional comment
For a continuous function, the limit at a point is simply the value at that point. F(x) is continuous in the neighborhoods of the points of interest, so we simply need to find the function value.
In 2008, Chris bought a new boat for $35,000. The boat was worth $19,000 in the year 2011. If Chris knows that the value of the boat depreciated linearly, what was the annual rate of change of the boat's value? Round your answer to the nearest hundredth if necessary.
The annual rate of change of the boat's value is $5334.
Given,
Chris bought a new boat in 2008.
The value of boat in 2008 (Initial value) = $35000
The value of boat in 2011 = $19000
Chris knows that the value of the boat depreciated linearly.
We have to find the annual rate of change of the boat's value, x.
Number of years, n = 2008 to 2011 = 3 years
Here, x be a constant.
So,
Value in 2011 = Initial value - nx
19000 = 35000 - 3x
3x = 35000 - 19000
3x = 16000
x = 16000/3
x = 5333.33
x = 5334
That is,
The annual rate of change of the boat's value is $5334.
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Given A and B are vertical angles with m /A = 20x + 10 and m/B = 30x - 10.
What is x?
Answer:
to solve for x, you gotta make the two equations equal to each other then you can move the numbers to get the value of x
20x+10=30x-10
20x-30x=-10-10
-10x=-20
x=2
Answer:
x=2
Step-by-step explanation:
if m/A and m/B are equal, to find x, your equation would be 20x+10=30x-10. doing two step equations, you would substract 20x from both sides, making your equation look like 10=10x-10. then you would add 10 from both sides making your equation 20=10x. then you would divide 10x from both sides making x=2.
What is 7 x 10 ^-4 in standard notation?
Answer: 0.007
Step-by-step explanation: 70 x 10^-4= 0.0001
70 x 0.0001
7 x 0.001
0.007
Hope this helps!
The standard notation of 7 x [tex]10^{-4}[/tex] is 0.0007.
The given expression is;
7 x [tex]10^{-4}[/tex]
To write 7 x [tex]10^{-4}[/tex] in standard notation,
When multiplying an integer by a power of ten, the decimal point is moved to the right or left by the number of zeroes in the exponent.
So, for7 x [tex]10^{-4}[/tex],
Move the decimal point 4 places to the left.
Starting with 7, Move the decimal point 1 place to the left to get 0.7.
Move it another 3 places to the left to get 0.0007.
Therefore,
7 x [tex]10^{-4}[/tex] in standard notation is 0.0007.
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given vectors u=(70.707,84.265) and u=(-56.382,20.521) use the dot product to multiply the vectors
Step 1
Given;
[tex]\begin{gathered} u=(70.707,84.265) \\ v=(-56.382,20.521) \end{gathered}[/tex]Required; To find the dot product
Step 2
Find the dot product
[tex]\begin{gathered} \begin{pmatrix}70.707 & 84.265\end{pmatrix}\begin{pmatrix}-56.382 & 20.521\end{pmatrix}= \\ =70.707\left(-56.382\right)+84.265\cdot \:20.521 \\ =-2257.400009 \\ \end{gathered}[/tex]The answer thus is;
[tex]-2257.400009[/tex]cuanto es : Dos veces mas cuatro es igual a seis ?
We are asked to solve for a number such that:
Twice that number plus 4 equals 6
Which can be written in math terms as:
2 x + 4 = 6
Now we proceed to isolate the unknown in steps.
First we subtract 4 from both sides:
2 x + 4 - 4 = 6 + 4
we combine like terms:
2 x = 10
Now we divide both sides by 2 so as to cancel the factor 2 that accompanies "x":
2 x / 2 = 10/ 2
perform the indicated operations:
x = 5
a number is 8 more than 32. find the number.let n = number.
do the sum
[tex]n=40[/tex]the number is 40 because 40 is 8 more than 32
Change 4x + 7y= 14 to slope intercept form
(y=mx+b)
The length of a rectangle is four times its width.
If the area of the rectangle is 144 cm^2 , find its perimeter.
Answer:
Let width of rectangle be x cm.
Width = x cm
Length = 4x cm
Area of rectangle = length x width
4x × x = 144
4x² = 144
x² = 144 ÷ 4 = 36
x = √36 = 6
Width = 6 cm
Length = 6 × 4 = 24cm
Perimeter = 6 + 24 + 6 + 24 = 60 cm
Marie is choosing a bag of apples to make into a pie. She thinks the pie will be tastier if it has more apples. The bag of green apples weighs 4.75, point, 75 pounds. The bag of red apples weighs 4.54, point, 5 pounds.
Which bag of apples should she buy?
red apples or green?
(from khan academy)
Marie should buy the bag with green apples as it has more weight hence it will have more apples eventually making her pie tastier
Comparison: When we compare, we look for similarities among the characteristics of other items or objects. Mathematicians use the concept of comparing and ranking numbers to identify the smaller and larger numbers and to determine whether they should be arranged in ascending or descending order.
Weight of bag with green apples = 4.75 pounds
Weight of bag with red apples = 4.54 pounds
Since the bag with green apples weighs heavier and contains more apples overall, Marie should purchase it because it will make her pie taste better.
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9. FOOD Deandre has 7 apples and each apple
is divided evenly into eighths. How many
apple slices does Deandre have?