Answer:
Area of park = 2976 ft²
Length of park = 62 ft
Width of park = ?
Area of park = length ×width
2976 = 62 × width
width = 2976/62
=48 ft
rewrite in standard form (only)
5x+10y=30
8x +2y=12
-12x+3y=27
-24x-12y=60
Answer:
Below in bold.
Step-by-step explanation:
Standard form is Ax + By = C
where A, B and C are integers and A must be positive.
So the first 2 are already in standard form but the last 2 can be converted to standard form by multiplying each term by -1:
-12x+3y=27
= -1*-12x + -1*3y = -1*27
12x - 3y = -27 is the answer.
The last one is:
24x + 12y = -60.
Please help I need the answer
The maximum value of P = x + 6y subject to the constraints is 9
How to determine the maximum value?The objective function is given as:
P = x + 6y
The constraints are given as:
2x + 4y ≤ 10
x + 9y ≤ 12
x≥0 y≥0
Rewrite 2x + 4y ≤ 10 and x + 9y ≤ 12 as equations
2x + 4y = 10
x + 9y = 12
Divide 2x + 4y = 10 through by 2
x + 2y = 5
Subtract x + 2y = 5 from x + 9y = 12
x - x + 9y - 2y = 12 - 5
Evaluate the difference
7y = 7
Divide by 7
y = 1
Substitute y = 1 in x + 2y = 5
x + 2(1) = 5
Solve for x
x = 3
So, we have
(x, y) = (3, 1)
Substitute (x, y) = (3, 1) in P = x + 6y
P = 3 + 6 * 1
Evaluate
P = 9
Hence, the maximum value of P = x + 6y subject to the constraints is 9
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factor the gratest common factor: -5k^2+20k-30
Answer:
±5
Step-by-step explanation:
-5k²+20k-30
if u look at the equation ±5 are the greatest common factors so we ±5(±k²±4k±6)
Gregory can mow the family's lawn in 3 hours, and jennifer can mow it in 4 hours. if they team up to mow the lawn together, how long will it take to finish mowing the lawn?
It takes 1 hour 43 minutes to finish mowing the lawn.
The rate of work done by Gregory and Jennifer finish mowing the lawn in
1 hour 43 minutes.
According to the question
Gregory can mow the family's lawn in 3 hours, she mows at a rate of 1/3 of the lawn per hour(1/3 lawn/hour)
Jennifer can mow it in 4 hours, which means her rate is 1/4 lawn/hour.
Together , their rates are 1/3 + 1/4.
This equals 7/12 lawns/hr.
We want to know how many hours they have to mow in order to mow 1 lawn.
This can be represented by the equation : [tex]\frac{7}{12} \times x = 1[/tex]
To solve for x, we would divide both sides by 7/12.
This leaves us with x = 12/7 which is 1.714.
Convert 1.714 to minutes by multiplying 60.
This gives you a final answer of about 1 hour 43 minutes.
Hence, It takes 1 hour 43 minutes to finish mowing the lawn.
The rate of work done by Gregory and Jennifer finish mowing the lawn in
1 hour 43 minutes.
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I need this answer now please!!
Last option, (-2,6) where the lines intercept / cross over each other.
Hope this helps!
Find dy/dx when r=2 2cos(theta) , then find slope of tengent line at point(4, 2pi)
The slope of tangent line at point(4, 2pi) is undefined.
For given question,
We have been given a polar equation r = 2 + 2cos(θ)
We need find dy/dx as well as the slope of tangent line at point(4, 2π).
We know that, for polar equation we use,
x = r cos(θ) and y = r sin(θ)
plug the given value of r into these equations we get:
⇒ x = r cos(θ)
⇒ x = (2 + 2cos(θ) ) × cos(θ)
⇒ x = 2(cos(θ) + cos²(θ))
⇒ x = 2cos(θ) + 2cos²(θ)
Similarly,
⇒ y = r sin(θ)
⇒ y = (2 + 2cos(θ) ) × sin(θ)
⇒ y = 2(sin(θ) + sin(θ)cos(θ))
⇒ y = 2sin(θ) + 2sin(θ)cos(θ)
Now we find derivative of x and y with respect to theta.
[tex]\Rightarrow \frac{dx}{d\theta} =-2sin(\theta)+2(-2cos(\theta)sin(\theta))\\\\\Rightarrow \frac{dx}{d\theta} =-2sin(\theta)-2sin(2\theta)[/tex] .............(1)
Similarly,
[tex]\Rightarrow \frac{dy}{d\theta}=2cos(\theta)+2(cos^2(\theta)-sin^2(\theta))\\\\\Rightarrow \frac{dy}{d\theta}=2cos(\theta)+2(cos(2\theta))[/tex] ..............(2)
Now we find dy/dx
⇒ dy/dx = (dy/dθ) / (dx/dθ)
From (1) and (2),
[tex]\Rightarrow \frac{dy}{dx} =\frac{2cos(\theta)+2cos(2\theta)}{-2sin(\theta)-2sin(2\theta)} \\\\\Rightarrow \frac{dy}{dx} =\frac{2(cos(\theta)+cos(2\theta))}{-2(sin(\theta)+sin(2\theta))}\\\\\Rightarrow \frac{dy}{dx} =-\frac{cos(\theta)+cos(2\theta)}{sin(\theta)+sin(2\theta)}[/tex]
We know that The slope of tangent line is given by dy/dx.
So, the slope is: [tex]m =-\frac{cos(\theta)+cos(2\theta)}{sin(\theta)+sin(2\theta)}[/tex]
Now we need to find the slope of tangent line at point(4, 2pi)
Substitute θ = 2π in above slope formula.
[tex]\Rightarrow m =-\frac{cos(2\pi)+cos(2\times 2\pi)}{sin(2\pi)+sin(2\times 2\pi)}\\\\\Rightarrow m=-\frac{1+cos(4\pi)}{0+sin(4\pi)}\\\\\Rightarrow m=-\frac{1+cos(4\pi)}{sin(4\pi)}[/tex]
⇒ m = ∞
The slope of tangent line at point(4, 2pi) is not defined.
This means, the tangent line must be parallel to Y-axis.
Therefore, the slope of tangent line at point(4, 2pi) is undefined.
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Find the value of x.
50°
(5x + 30)%
21⁰
Select all the correct answers. If the measure of angle 0 is 5(pi)/4, which statements are true?
The Measure of the reference angle is 45
cos(0)= √ 2/2
tan(0)=1
sin(0)=√ 2/2
the measure of the referance angle is 30
the measure of the referance angle is 60
Finding the equivalent angle of [tex]\theta[/tex], the correct statements are given as follows:
The Measure of the reference angle is 45.[tex]\cos{\theta} = \frac{\sqrt{2}{2}}[/tex].[tex]\tan{\theta} = 1[/tex][tex]\sin{\theta} = \frac{\sqrt{2}{2}}[/tex].What are equivalent angles?Each angle on the second, third and fourth quadrants will have an equivalent on the first quadrant.
In this problem, the given angle is as follows:
[tex]\theta = \frac{5\pi}{4}[/tex]
It is on the third quadrant, as it is between pi and 1.5 pi, hence the equivalent on the first quadrant, also known as the reference angle, is given by:
[tex]\frac{5\pi}{4} - \pi = \frac{5\pi}{4} - \frac{4\pi}{4} = \frac{\pi}{4}[/tex]
The angle of 45º has equal sine and cosine, and tangent of 1, hence the correct statements are:
The Measure of the reference angle is 45.[tex]\cos{\theta} = \frac{\sqrt{2}{2}}[/tex].[tex]\tan{\theta} = 1[/tex][tex]\sin{\theta} = \frac{\sqrt{2}{2}}[/tex].More can be learned about equivalent angles at https://brainly.com/question/24787111
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Answer:
The measure of the reference angle is 45 degrees
tan(theta) = 1
Step-by-step explanation:
How do you expressed the difference in the measures of center as a multiple of the measure of variation in a box plot when the IQ ours are different
In the circle below, if AD is a diameter, and the length of chord BC = 36, find the length of the segment BP.
Answer:
b. 18
Step-by-step explanation:
The perpendicular bisector of a chord is a diameter of the circle. Conversely, if the diameter is perpendicular to a chord, it also bisects it.
Segment lengthsBC = BP +PC
BC = 2×BP . . . . . . . BP = PC
BP = BC/2 = 36/2 = 18 . . . . . . . divide by 2; substitute given values
The length of segment BP is 18 units.
If a writer writes 5,000 words per day to their novel, spending at least 6 hours to do so, and their goal is 120,000, how many days and hours total would it take to achieve their goal? The best explanation and answer gets Brainliest!
Answer:
6 days
Step-by-step explanation:
if they are writing at 5,000 words per 6 hours, we divide 120,000 by 5,000 and then multiply by 6: 120,000/5,000 = 24, 24*6 = 144 total hours
There are 24 hours in a day: 144/24 = 6
A graph titled Population of Old Town has Time (years after 2000) on the x-axis, and number of people on the y-axis. A line goes through points (4, 7,000) and (6, 6,500). What is the slope for this scenario? -500 -250
The slope of the scenario is calculated as: -250.
How to Find the Slope Value?Slope (m) = change in y / change in x = (y2 - y1)/((x2 - x1).
Given the points:
(4, 7,000) = (x1, y1)
(6, 6,500) = (x2, y2)
Plug in the values
Slope (m) = (6,500 - 7,000) / (6 - 4)
Slope (m) = (-500) / (2)
Slope (m) = -250
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A person spends 1/5 of his salary on rent, 3/7 on food, 1/3 on other expenses and saves the rest. If she earns $21,000 per month, how much does she save per year?
Answer:
$9600 saving / year
Step-by-step explanation:
1/5 of $21000 = 21000 / 5 = $4200 / month on rent
3/7 of $21000 = (21000 / 7) x 3 = $9000 / month on food (shocking right :) food is expensive)
1/3 of $21000 = 21000 / 3 = $7000 on other expenses / month
total savings/month = salary/month - rent/month - food/month - other expenses/month
total savings/month = 21000 - 4200 - 9000 - 7000
total savings/month = $800
BUT the question asks for savings per year. therefore, we must multiply the savings per month by total months per year (12)
800 x 12 = $9600
the person's total savings per year, with a salary of $21000 per month, is equal to $9600 per year
hich is the best approximation for the solution of the system of equations?
y = A system of equations. y equals negative StartFraction 2 over 5 EndFraction x plus 1. y equals 3 x minus 2.x + 1
y = 3x – 2
the solution of the system of linear equations is:
x = 6/11
y = -4/11
How to solve the system of equations?
Here we have the system of equations:
y = (-5/2)*x + 1y = 3x - 2To solve the system, we can see that y is already isolated in both sides, then we get:
(-5/2)*x + 1 = 3x - 2
Now we can solve this for x:
(-5/2)*x + 1 = 3x - 2
2 + 1 = 3x + (5/2)*x
3 = (6/2)*x + (5/2)*x
3 = (11/2)*x
(2/11)*3 = x
6/11 = x
To get the value of y, we evaluate any of the lines in x = 6/11
y = 3*(6/11) - 2 = 18/11 - 2 = 18/11 - 22/11 = -4/11
Then the solution of the system of linear equations is:
x = 6/11
y = -4/11
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Jeremy likes to paint. he estimates the number of paintings he completes using the function p of w equals one third times w plus four, where w is the number of weeks he spends painting. the function j(y) represents how many weeks per year he spends painting. which composite function would represent how many paintings jeremy completes in a year? p of j of y equals j times the quantity one third times w plus four j of p of w equals one third times j of y plus four p of j of y equals one third times j of y plus four j of p of w equals j times the quantity one third times w plus four
composite function J[P(W)=J(1/3w+4) represent paintings Jeremy completes in a year .
this equation means number of paintings= weeks(rate)
The function P takes a number of weeks as an argument and returns the number of paintings.
The function J takes some argument (unspecified) and returns a number of weeks per year.
The composite function that will give the number of paintings per year will be P(weeks per year) = P(J(y)).
P(J(y)) = 1/3·J(y) +4 .
Looking at the units of the input and output of each of the functions is called "units analysis."
What is Unit analysis?Unit analysis means using the rules of multiplying and reducing fractions to solve problems involving different units.
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Answer:
P[J(y)] = 1/3 (Jy) + 4
Answered the quiz and it's correct.
Evaluate the expression under the given conditions. cos(2); sin() = − 3 5 , in quadrant iii
The value of a particular trigonometric expression that is cos 2θ under the third quadrant is -119/169
Given:
sin θ = -⁵/₁₃
This can be seen from the trigonometric identity.
cos 2θ = 1 - 2sin²θ
From trigonometric identities, we know that;
cos 2θ = 1 - 2sin²θ
Thus;
cos 2θ = 1 - 2(-⁵/₁₃)²
cos 2θ = 1 - 2(25/169)
cos 2θ = 119/169
since cos θ is negative in the third quadrant, then we have;
cos 2θ = -119/169
so; cos θ is negative in the third quadrant, so ;
cos 2θ = -119/169
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Use the recursive formula to find the first five terms in the arithmetic sequence.
Answer:
is 54, 45, 36, 27, 18
Step-by-step explanation:
Recursive formulas give us two pieces of information:
1. The first term of the sequence
2. The pattern rule to get any term from the term that comes before it
In the formula given,
n is any term number
f(n) is the nth term
This means
f(1) is the first term
f(f-1) is the term before the nth term
To find the first five numbers in this arithmetic sequence, we know the formula has given us these two pieces of information:
1. The first term is 54
2. The rule to get any term from its previous term is -9
So, we know the sequence for this formula is 54, 45, 36, 27, 18 because starting off with 54, then minus 9 from every sum gives us the following equations
54-9=45
45-9=36
36-9=27
27-9=18
In the diagram below, if arc AB measures 62 ° and arc DC measures 102 °, find the measure of < APD.
The measure of angle < APD = 98°. That is option D
Calculation of the missing angleAngle APB = 62°
Angle DPC = 102°
But length AD = BC
Therefore, angle APD = BPC
Also, the angle at a point = 360°
The sum of the angles given = 102 + 62 = 164°
The remaining angle = 360 - 164 = 196°
Therefore angle APD = 196/2 = 98°
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Instructions: Find the length of the arc. Round your answer to the nearest tenth.
Answer:
7
Step-by-step explanation:
The length of the arc can be calculated via a simple proportion:
2 pi r : 360° = x : 45°
Where r is the radius of the circumference and x the length of the arc we want to know. Isolating the x:
x = (2 pi r : 360) * 45 = (2 pi * 9 : 180) * 45 = 18 pi : 360 * 45 = 18pi : 8 = 7
2(x+1)=10 what's x please best example
Answer:
x = 4
Step-by-step explanation:
1.Distribute
2. Subtract 2 from both sides
3. Simplify
4. Divide both sides by same factor
5. Simplify
x = 4
Answer: 4
Step-by-step explanation:
We have to try getting x by itself to solve for it. Since we have two sides that are equal to each other, we can add, subtract, multiply, and divide anything on both sides to try to isolate x.
[tex]2(x+1)=10[/tex]
We can first divide the left side and the right side by 2. This would remove the 2 being multiplied on the outside.
[tex]\frac{2(x+1)}{2}=\frac{10}{2}\\x+1=10\div 2\\x+1=5[/tex]
Now, we have a + 1 on the left side that we need to remove to get x by itself. If we are adding something, we can remove that by subtracting the same thing. Hence, we can subtract 1 from both sides to remove the + 1.
[tex]x+1=5\\x+1-1=5-1\\x+0=4\\x=4[/tex]
After all that simplifying, we get that x equals 4.
An online retail company determined that their cost for each day, x, can be determined by the function C(x) = 2x^2 – 20x + 70 and their revenue by the function R(x) = –x^2 + 5x + 18. How many days will it take for the company to earn a profit?
4
5
20
22
Answer:
4
Step-by-step explanation:
revenue has to be greater than cost for a profit
revenue minus cost = profit
2x^2 – 20x + 70 - (–x^2 + 5x + 18) =
2x^2 – 20x + 70 + x^2 - 5x - 18 =
3x^2 – 25x + 52 ≤ 0
(x - 4) (3x - 13) ≤ 0
x ≤ 4
x ≤ 13/3
since its multiple choice you can enter one of the answers where the x is to get the answer
if you don't know what the question is and are short on time this may help
again:
revenue has to be greater than cost for a profit
revenue minus cost = profit
cost is 2x^2 – 20x + 70
revenue is –x^2 + 5x + 18
cost is
2(4)^2 – 20(4) + 70 =
32-80+70 =
102-80 =
22
revenue is
–x^2 + 5x + 18
–(4)^2 + 5(4) + 18
-16+20+18
-16+38
22
--------------------------------
cost is
2(5)^2 – 20(5) + 70 =
20
revenue is
–(5)^2 + 5(5) + 18
18
-------------------------------------
cost is
2(20)^2 – 20(20) + 70 =
470
revenue is
–(20)^2 + 5(20) + 18
-282
------------------------------
cost is
2(22)^2 – 20(22) + 70 =
598
revenue is
–(22)^2 + 5(22) + 18
-356
-----------------------------------------
cost is
2(3)^2 – 20(3) + 70 =
28
revenue is
–(3)^2 + 5(3) + 18
24
-------------------------------------
cost is
2(2)^2 – 20(2) + 70 =
38
revenue is
–(2)^2 + 5(2) + 18
24
Classify the following function.
The equation is neither geometric nor arithmetic
How to classify the function?The function is given as
f(x) = 2x^2 + 6x - 9
As a general rule, arithmetic functions or sequences have a common difference while geometric functions or sequences have a common difference
Set x = 0, 1 and 2
f(0) = 2(0)^2 + 6(0) - 9 = -9
f(1) = 2(1)^2 + 6(1) - 9 = -1
f(2) = 2(2)^2 + 6(2) - 9 = 11
Calculate the common difference (d)
d = 11 --1 = -1--9
d = 12 = 8 ---- false equation i.e. no common difference
Calculate the common ratio (r)
r = 11/-1 = -1/-9
d = -11 = 1/9 ---- false equation i.e. no common ratio
The above function is not an arithmetic function.
This is so because it does not have a common difference
Also, the function is not a geometric function.
This is so because it does not have a common ratio
Hence, the true statement about the function is (c) the equation is neither geometric nor arithmetic
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Question 3 of 10
Which of the following must be true for an expression to be a difference of
two squares?
a. all variables are raised to an even power
b. there are only two terms
c. both terms have negative coefficients
OA. a, b, and c
B. a and b
OC. a and c
D. b and c
PLEASE HELP BRAIBLIST ANSWER PLS
Answer:
[tex]m=-3[/tex]
Step-by-step explanation:
Given points:
[tex](5,3),(8,-6)[/tex]
1. Find the slope
The slope of a line between two points equals the change in the points' y-coordinates (rise) over the change in their x-coordinates (run).
The coordinates of point 1 are: [tex]x_1=5,y_1=3[/tex]
The coordinates of point 2 are: [tex]x_2=8,y_2=-6[/tex]
To find the slope, plug the points' x and y-coordinates into the formula and combine to simplify:
[tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]
[tex]m=\frac{-6-3}{8-5}[/tex]
[tex]m=\frac{-9}{3}[/tex]
[tex]m=-3[/tex]
Q11) kelly puts $350 in a savings account. the savings account accrues interest at a flat rate of 1.05% a month. how much will the account be worth in 7 months ?
The account be worth in 7 months is 375.725 .
What is the amount in simple interest?Amount (A) is the total money paid back at the end of the time period for which it was borrowed. The total amount formula in case of simple interest can also be written as: A = P(1 + RT)
Here, A = Total amount after the given time period.
Given that,
P = $350, R = 1.05%, T = 7 month
The simple interest equation uses "t" as years, but is just cycles, using an APR rate.
now, if we never mind "t" as years and just use it as an interest cycle, then we can say the rate is 1.05% and the period is 7 cycles.
A = P(1 + RT)
= 350(1+1.05%×7)
= 350(1+0.0105×7)
= 350(1+0.0735)
= 350×1.0735
A = $375.725
Hence, The account be worth in 7 months is 375.725 .
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Determine the 95% confidence interval for the difference of the sample means. then complete the statements.
Answer:
Confidence Level z*-value
90% 1.645 (by convention)
95% 1.96
98% 2.33
99% 2.58
Step-by-step explanation:
the difference in sample means is 0.1, and the upper end of the confidence interval is 0.1 + 0.1085 = 0.2085 while the lower end is 0.1 – 0.1085 = –0.0085.
Three interior angles of a quadrilateral measure 55°, 117°, and 120°. What is the measure of the fourth interior angle?
68°
78°
88°
98°
Answer:
68
Step-by-step explanation:
We know the sum of interior angles for a quadrilateral must equal 360, so we can create the following equation
[tex]55+117+120+x=360[/tex]
Simplify
[tex]292+x=360[/tex]
Subtract 292 from both sides
[tex]x=68[/tex]
Answer:
68
Step-by-step explanation:
The sum of the interior angles of a quadrilateral is 360. The sum of the interior angles or a triangle is 180. If you think about a rectangle, you can cut that up into two triangles, so 180 + 180 = 360.
Now subtract out the 3 angles that you know
360-55-117-120 = 68
Help question below study island
Factor the cubic polynomial 6x3 – 11x2 – 12x 5. use the rational root theorem and synthetic division
The factorization of given cubic polynomial 6x³ - 11x² - 12x + 5 is:
6x³ - 11x² - 12x + 5 = (x + 1)(x - [tex]\frac{5}{2}[/tex])(x - [tex]\frac{1}{3}[/tex])
For given question,
We have been given the cubic polynomial 6x³ - 11x² - 12x + 5
We need to factorize given cubic polynomial.
By the rational roots theorem, any rational zero of f(x) is expressible in the form ± [tex]\frac{p}{q}[/tex] for integers p, q with p a divisor of the constant term 5 and q a divisor of the coefficient 6 of the leading term.
Factors of p = 5: 1, 5
Factors of q = 6: 1, 2, 3, 6
That means that the only possible rational zeros are:
±{ [tex]\frac{1}{1} ,\frac{1}{2} ,\frac{1}{3} ,\frac{1}{6} ,\frac{5}{1} ,\frac{5}{2} ,\frac{5}{3} ,\frac{5}{6}[/tex] }
= ±{ [tex]1 ,\frac{1}{2} ,\frac{1}{3} ,\frac{1}{6} ,5 ,\frac{5}{2} ,\frac{5}{3} ,\frac{5}{6}[/tex] }
We need to find the exact zeros of given cubic polynomial.
For x = 1,
6(1)³ - 11(1)² - 12(1) + 5 = -12
This means, x = 1 is not a zero of given cubic polynomial.
For x = -1,
6(-1)³ - 11(-1)² - 12(-1) + 5 = 0
This means, x = -1 is a zero of given cubic polynomial and (x + 1) is a factor.
To factorize given cubic polynomial we use synthetic division.
The synthetic division (6x³ - 11x² - 12x + 5) ÷ (x + 1) is as shown in following image.
⇒ 6x³ - 11x² - 12x + 5 = (x + 1)(6x² - 17x + 5)
The factors of above quadratic polynomial 6x² - 17x + 5 are:
⇒ 6x² - 17x + 5 = (x - [tex]\frac{5}{2}[/tex])(x - [tex]\frac{1}{3}[/tex])
So, the factors of given cubic polynomial are:
⇒ 6x³ - 11x² - 12x + 5 = (x + 1)(x - [tex]\frac{5}{2}[/tex])(x - [tex]\frac{1}{3}[/tex])
Therefore, the factorization of given cubic polynomial 6x³ - 11x² - 12x + 5 is: 6x³ - 11x² - 12x + 5 = (x + 1)(x - [tex]\frac{5}{2}[/tex])(x - [tex]\frac{1}{3}[/tex])
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Kathy needs money for her trip to Europe. If she has $300$ US dollars in the bank but wants to withdraw half of it in British pounds and half of it in euros, how many more euros than pounds will she have
Kathy has 22 more Euros than British pounds.
Linear equation is an algebraic equation that is a representation of the straight line. Linear equations are composed of variables and constants. These equations are of first-order, that is, the highest power of any of the involved variables i.e. 1. It can also be considered as a polynomial of degree 1. Linear equations containing only one variable are called homogeneous equations. The corresponding variable is called the homogeneous variables.
For instance,
x + 2y = 3 is a linear equation in two variables.x + y + z = 8 is in three variables.x + y2 = 1 is not a linear equation because the highest power of y is 2.300 / 2 = 150 dollars.
150 /1.64 = 91.46 British pounds
150 /1.32 =113.64 Euros
113.64 - 91.46 =22.18 ≅ 22
Thus Kathy has 22 more Euros than British pounds.
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