Mathematics College
Answers
Answer 1
The equation of the trigonometric function graphed is A) f(x) = 3 sin (x) - 2.
Given a graph of the trigonometric function.
We have to find the equation of the trigonometric function.
For x = π/2, y = 1
Also, when x = 3π/2, y = -5
A) If the function is,
f(x) = 3 sin (x) - 2,
When x = π/2
f(x) = 3 sin (π/2) - 2
= 3(1) - 2
= 1
When x = 5π/2
f(x) = 3 sin (5π/2) - 2
= 3 (-1) - 2
= -5
Hence the correct option is A.
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Related Questions
Graph the line with y-intercept 4 and slope 2.
Answers
Answer is in the file atttached.
of x. i) Let f: R-R be defined by f(x) = mx + c, x = R. If f(0) = 5 and f(1) = 6, find the values. of m and c. Also, find the function f(x).
Answers
The values of m and c are m = 1 and c = 5.
The function f(x) is given by: f(x) = x + 5
How to solve the function
To find the values of m and c in the function f(x) = mx + c, we can use the given information that f(0) = 5 and f(1) = 6.
Let's substitute x = 0 into the function:
f(0) = m(0) + c = 0 + c = c
We know that f(0) = 5, so c = 5.
Now let's substitute x = 1 into the function:
f(1) = m(1) + c = m + c = m + 5 = 6
Subtracting 5 from both sides, we have:
m + 5 - 5 = 6 - 5
m = 1
Therefore, the values of m and c are m = 1 and c = 5.
The function f(x) is given by:
f(x) = mx + c
f(x) = 1x + 5
f(x) = x + 5
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Define the variables
Answers
a. The variables are x and y which represents 2 shots and 3 shots respectively.
b. The system of equations are;
x + y = 11
2x + 3y = 29
What are the variables to this problem?
a. Let's define the variables to write the system of equations:
Let x be the number of two-point shots Noah made.
Let y be the number of three-point shots Noah made.
b. We can write a system of equations that model this problem.
Equation 1: x + y = 11
This equation represents the total number of shots Noah made, which is 11.
Equation 2: 2x + 3y = 29
This equation represents the total number of points Noah scored, which is 29. Since each two-point shot is worth 2 points and each three-point shot is worth 3 points, we can multiply the number of two-point shots (x) by 2 and the number of three-point shots (y) by 3 and sum them up to get the total score of 29.
The system of equations that can be used to determine the number of two-point shots Noah made and the number of three-point shots he made is:
x + y = 11
2x + 3y = 29
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50 Points! Multiple choice geometry question. Photo attached. Thank you!
Answers
Applying the angle of intersecting secants theorem, the measure of arc LN in the circle is: 56°.
How to Find the Arc Measure Using the Angle of Intersecting Secants Theorem?
Given the circle in the image above where the two secants intersect outside the circle, the angle of intersecting secants theorem states that:
external angle formed = 1/2 * (the measure of arc KP - the measure of arc LN)
Plug in the values:
20 = 1/2 * (96 - m(LN))
2 * 20 = 96 - m(LN)
40 = 96 - m(LN)
m(LN) = 96 - 40
m(LN) = 56°
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100 Points! Geometry question. Photo attached. Please show as much work as possible. Thank you!
Answers
The length of the arc LM is 8.72 cm.
We have,
The length of an arc is the distance that runs through the curved line of the circle making up the arc.
The length of an arc is expressed as;
l = tetha/360 × 2πr
tetha = R
R = 100°
and, radius = 5 units
so, we get,
l = 100/360 × 2 × 3.14 × 5
l = 8.72 cm (1.dp)
therefore the length of the arc LM is 8.72 cm
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33 + 78 + 23 + 21 + 98 + 32 = ???
Answers
Answer:
The sum of 33, 78, 23, 21, 98, and 32 is 325.
A jogger running around a rectangular park takes a shortcut back to his car by running 53 meters from one corner to the opposite corner. If the park is 45 meters long, what is the width?
Answers
Answer:
28 meters Aprox
Step-by-step explanation:
To find the width of the rectangular park, we can use the Pythagorean theorem. The diagonal running from one corner to the opposite corner forms a right triangle with the length and width of the park.
Given:
Length of the park (L) = 45 meters
Diagonal distance (d) = 53 meters
Using the Pythagorean theorem:
d² = L² + W²
(53 meters)² = (45 meters)² + W²
2809 = 2025 + W²
W² = 2809 - 2025
W² = 784
Taking the square root of both sides:
W ≈ √784
W ≈ 28
Therefore, the width of the rectangular park is approximately 28 meters.
What’s the factor of the expression?
Answers
The answer to this question: B
PLEASE HELP AND SHOW WORK
Answers
The amount of fabric required is 400.551 ft².
We have,
CB= 8 feet
CF= 13 feet
AM = 8 feet
Using Pythagoras
AC² = AM² + CM²
AC = √64+16 = √80 = 4√5 feet
Now, the formula for Triangular prism is
= (Sum of three sides of triangle face)l + base area
= (4√5 + 4√5 + 8)13 + 8 x 8
= 104√5 + 104 + 64
= 104√5 + 168
= 232.551 + 168
= 400.551 ft²
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100 Points! Geometry question. Photo attached. Please show as much work as possible. Thank you!
Answers
The surface area of each solid is listed below:
Case A: A = 584.988 ft²
Case B: A = 320π in²
How to determine the surface area of a solid
In this problem we must determine the surface area of each of two solids, that is, the sum of the areas of all faces, whose area formulas are introduced below:
Square
A = l²
Where l is the side length.
Triangle
A = 0.5 · w · h
Where:
w - Widthh - Height
Circle
A = π · r²
Where r is the radius.
Lateral side of a cylinder
A = 2π · r · h
Where h is the height of the cylinder.
Now we proceed to determine the surface area of each solid:
Case A:
A = (14 ft)² + 4 · 0.5 · (14 ft) · √[(7 ft)² + (12 ft)²]
A = 584.988 ft²
Case B:
A = 2π · (8 in)² + 2π · (8 in) · (12 in)
A = 320π in²
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50 Points! Multiple choice geometry question. Photo attached. Thank you!
Answers
Area of a polygon formula: = 2(1+[tex]\sqrt{2}[/tex]) side²
To find one side: 96 ÷ 8 = 12
implement formula
≈695.29351
A rectangular room is tiled with tiles 1
2
inches long and 1
2
inches wide. If the room is L tiles long and W tiles
wide, find the room’s area, in square inches.
Answers
The room’s area, in square inches is,
⇒ A = 144LW square inches.
We have to given that,
A rectangular room is tiled with tiles 12 inches long and 12 inches wide.
And, The room is L tiles long and W tiles wide.
Hence, Lenght of L tiles,
= 12L
And, Length of W tiles,
= 12W
Since, We know that,
Area of rectangle is,
⇒ A = Length x width
Substitute given values, we get;
⇒ A = 12L x 12W
⇒ A = 144LW square inches.
Therefore, The room’s area, in square inches is,
⇒ A = 144LW square inches.
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Circle the error in the problem and rewrite what the correct step should be
Answers
The error in the problem is given by the equation in step(3). and the value is given by g ( x ) = 2x² + 4x - 4
Given data ,
Let the equation be represented as g ( x )
Now , the value of g ( x ) is
g ( x ) = 2 ( x + 1 )² - 6
On simplifying the equation , we get
From the distributive law of multiplication , we get
g ( x ) = 2 ( x + 1 ) ( x + 1 ) - 6
g ( x ) = 2 ( x² + 2x + 1 ) - 6
On further simplification , we get
g ( x ) = 2x² + 4x + 2 - 6
g ( x ) = 2x² + 4x - 4
Therefore, the value of g ( x ) is g ( x ) = 2x² + 4x - 4
Hence , the equation is g ( x ) = 2x² + 4x - 4
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PLEASE HELP ME ANSWER QUESTIONS 7, 8, 9 AND 10. I REALLY, REALLY NEED THEM
Answers
The area under the curve y = x² + 5x + 4 and the x-axis is [tex]1\frac{2}{3}[/tex] square units.
To find the area under the curve y = x² + 5x + 4 and the x-axis, we need to integrate the given function over a specific interval.
We need to find the definite integral of the function over a suitable interval.
Let's find the definite integral of the function from its roots (where the curve intersects the x-axis).
First, let's find the roots of the function by setting y = 0:
x² + 5x + 4 = 0
Factoring the quadratic equation:
(x + 1)(x + 4) = 0
Setting each factor equal to zero:
x + 1 = 0 => x = -1
x + 4 = 0 => x = -4
The roots of the function are x = -1 and x = -4.
To find the area under the curve, we integrate the function from x = -4 to x = -1:
∫[x=-4 to -1] (x² + 5x + 4) dx
Integrating the function:
∫[x=-4 to -1] (x² + 5x + 4) dx = [1/3x³ + (5/2)x² + 4x] from -4 to -1
Substituting the limits:
[1/3(-1)³ + (5/2)(-1)² + 4(-1)] - [1/3(-4)³ + (5/2)(-4)² + 4(-4)]
Simplifying:
[-1/3 + 5/2 - 4] - [-64/3 + 40/2 - 16]
[tex]1\frac{2}{3}[/tex]
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Simplifying a product involving square roots using distributi…
Answers
The simplified expression in the context of this problem is given as follows:
[tex]5\sqrt{5}(\sqrt{10} - 3) = 25\sqrt{2} - 15\sqrt{5}[/tex]
How to simplify the expression?
The expression in the context of this problem is given as follows:
[tex]5\sqrt{5}(\sqrt{10} - 3)[/tex]
Applying the distributive property, we multiply the outer term by each of the inner terms, hence:
[tex]5\sqrt{50} - 15\sqrt{5}[/tex]
The number 50 can be written as follows:
50 = 2 x 25.
Hence the square root is simplified as follows:
[tex]\sqrt{50} = \sqrt{2 \times 25} = 5\sqrt{2}[/tex]
Hence the simplified expression is given as follows:
[tex]25\sqrt{2} - 15\sqrt{5}[/tex]
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Here, S.P. = . 1,61, 680 D%= 6%. M.P. = ?
Answers
The marked price (M.P.) is 1,72,000 when the selling price is 1,61,680 with discount of 6%.
To find the marked price (M.P.), we can use the formula:
M.P. = S.P. / (1 - D%)
Given:
S.P. = 1,61,680
D% = 6%
First, we need to convert the discount percentage to decimal form by dividing it by 100:
D% = 6/100 = 0.06
Now, we can substitute the values into the formula:
M.P. = 1,61,680 / (1 - 0.06)
M.P. = 1,61,680 / 0.94
M.P. = 1,72,000
Therefore, the marked price (M.P.) is approximately 1,72,000.
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Which expression is equal to x-9/x-4 + x^2-x+5/x-4
Answers
Answer: The expression can be simplified by combining the fractions with a common denominator:
(x - 9)/(x - 4) + (x^2 - x + 5)/(x - 4)
To add these fractions, we need to find a common denominator, which in this case is (x - 4). Therefore, we can rewrite each fraction with the common denominator:
[(x - 9) + (x^2 - x + 5)] / (x - 4)
Simplifying the numerator:
(x - 9 + x^2 - x + 5) / (x - 4)
Combining like terms:
(x^2 - 2x - 4) / (x - 4)
Hence, the simplified expression is (x^2 - 2x - 4) / (x - 4).
What is the equation for this line?
Answers
y=2/3x-4 is the equation of the line where 2/3 is the slope.
We have to find the equation of line which is passing through points (0, -4) and (3, -2).
The slope intercept form of a line is y=mx+b, where m is slope and b is the y intercept.
The slope of line passing through two points (x₁, y₁) and (x₂, y₂) is
m=y₂-y₁/x₂-x₁.
Slope = -2+4/3-0
=2/3
Now let us find the y intercept.
-4=2/3(0)+b
b=-4
The equation of line is y=2/3x-4.
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Find the value of x to
the nearest whole
number.
Answers
Answer: i'm kind of just guessing, but i think x = 13
Step-by-step explanation:
please don't ask me how i don't know
find the volume of cylinder 8in r 2in h
Answers
Answer:
402.12 or just 402
50 Points! Multiple choice geometry question. Photo attached. Thank you!
Answers
This is a simple one.
All you need to do is find the scale factor of the shapes. (How much has it decreased by?)
Wecan find this by doing 15 ÷ 20 (not the other way round because we want to find the scale factor for the bigger rectangle to the smaller)
15 ÷ 20 = 0.75
So to find the area all you need to do is times the area with the scale factor which is 0.75
500 x 0.75 = 375cm²
So the answer is
(A) 375cm²
The answer is b)375m2
2. Consider this dilation.
Pre-image
9 cm
B
Image
3 cm B
(a) Find the scale factor. Show your work. (5 points)
(2- a.) Scale factor= Image length
Pre-image length
Answers
1/3.
Explanation:
The scale factor is the ratio of the image length to the pre-image length.
Scale factor = Image length / Pre-image length
In this case, the image length is 3 cm and the pre-image length is 9 cm.
Scale factor = 3 cm / 9 cm = 1/3
Match the system of equations with the number of solutions.
y = 6z+8
y = 6x-4
y = 3x + 2
y + 3x = -7
4z - 2y = 10
2z-y = 5
4z + y = 8
y=-2z+8
No Solution
Answers
Answer:
Step-by-step explanation:
The system of equations with no solution is:
y + 3x = -7
4z - 2y = 10
The system of equations with exactly one solution is:
y = 6z+8
y = 6x-4
y = 3x + 2
2z-y = 5
y=-2z+8
The system of equations with infinitely many solutions is:
4z + y = 8
Write in exponential form. ln54.60=4
Answers
Step-by-step explanation:
ln 54.60 = 4 e^x both sides
e ^ (ln 54.60) = e^4
54.60 = e^4 Done.
An oven used 7.31 units of electricity over
4 hours.
What is the rate of electricity usage for this
oven in units per hour?
Give your answer to 1 d.p.
Answers
The rate of electricity usage for the oven is 1.8275 units per hour.
What is the rate of electricity usage for the oven?
The electricity consumption represents the amount of electrical energy that has been consumed over a specific time in units of Wh (or kWh),
To get rate of electricity usage for the oven in units per hour, we will divide the total electricity used by the number of hours.
Data:
Electricity used: 7.31 units
Time: 4 hours
Rate of electricity usage = Electricity used / Time
Rate of electricity usage = 7.31 units / 4 hours
Rate of electricity usage = 1.8275 units per hour.
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WILL GIVE BRAINLIEST FOR THE CORRECT ANSWER!!
What scale factor was applied to the first rectangle to get the resulting image?
Enter your answer as a decimal in the box.
Answers
Answer:
2.5
Step-by-step explanation:
the length has increased by 7.5/3 = 2.5.
so the scale factor is 2.5
Which is the equation for the function shown? A parabola that opens upward graphed on a coordinate plane. The vertex is negative 1, negative 2, and the parabola passes through the points negative 3, 2, and 1, 2. A. f(x) = (x − 1)2 + 2 B. f(x) = (x + 1)2 − 2 C. f(x) = (x − 2)2 + 1 D. f(x) = (x + 2)2 − 1
Answers
The equation for the function shown is f(x) = (x + 1)² - 2. Option B
How to determine the equation
From the information given, we have the deductions;
The vertex of the parabola is given as (-1, -2)
Using the form;
f(x) = a(x - h)^2 + k
Such that (h, k) represents the vertex coordinates.
Substitute the vertex coordinates into formula, we get;
f(x) = a(x - (-1))² + (-2)
= a(x + 1)² - 2
Now, substitute the value for a, we get;
2 = a(-3 + 1)² - 2
find the square and collect like terms
4 = a(4)
a = 1
Put value back into the equation
f(x) = 1(x + 1)² - 2
Multiply the value, we get;
f(x) = (x + 1)² - 2
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On an exam students are asked to list 5 historical events in the order in which they occurred. A student randomly orders the events. what is the probability that the
Answers
The probability that the student chooses the correct order is 1/120 or approximately 0.0083, which is equivalent to 0.83%.
How to solve
If the student randomly orders the events, there is only one correct order out of all possible permutations.
Hence, the likelihood of selecting the accurate sequence is equal to 1 over the total count of potential arrangements.
As there are 5 occurrences, the overall count of conceivable sequences is equivalent to 5 factorial (5!), amounting to 120.
Therefore, the probability that the student chooses the correct order is 1/120 or approximately 0.0083, which is equivalent to 0.83%.
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On an exam, students are asked to list 5 historical events in the order in which they occurred. A student randomly orders the events. What is the probability that the student chooses the correct order?
does anyone have answers to Practice: Unit Rates for Ratios with Fractions Level G iready and the quiz? I will give a lot of points and brainliest answer
Answers
What is the rate in cups of flour per cup of water that Sophie uses?
6 c of flour per c of water
Which fraction represents Raul's speed in miles per hour?
What is Raul's speed in miles per hour?
8 over 4/5
10
What is the rate in cups of corn starch per cup of water?
3/8
What is the price per pound of the dried apricots?
$6
What is Ellie's speed in miles per minute?
1/12 mi/min
At that rate, what is the price of 2 tons of gravel?
128
Final answer:
While direct answers to iReady tasks are not provided, guidance for tackling problems involving unit rates and ratios with fractions was presented. The concept to calculate the unit rate involves dividing the first quantity by the second quantity. One should work towards solving these problems independently to reinforce the learning.
Explanation:
I'm sorry, but I cannot provide direct answers to your iReady task; it would not be fair or beneficial to your learning. However, I can guide you in how to tackle problems involving unit rates and ratios with fractions. With a unit rate, you're finding a ratio that compares a quantity to one unit of another quantity. The method typically involves dividing the first quantity by the second one.
For example, if you have a problem that says '6 cookies cost $1.50, what is the unit rate?', you would solve it by dividing 1.50 (the cost) by 6 (the number of cookies) to find the unit cost of a single cookie. This gives you a unit rate of $0.25 per cookie. If your questions on iReady involve complex fractions or operations, follow the same concept but use the relevant operation (multiplication, division, etc.). Practice moving toward solving these problems independently to improve your understanding of the concept.
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Find the equation of the axis of symmetry of the following parabola algebraically. y=−3x^2−42x−159
Answers
The equation of the axis of symmetry is x = -7.
Given is an equation of a parabola, y = -3x² - 42x - 159, we need to find the equation of the axis of the symmetry.
To find the equation of the axis of symmetry of a parabola in the form of y = ax² + bx + c, you can use the formula x = -b / (2a).
In this case, the given equation is y = -3x² - 42x - 159.
Comparing it to the general form, we have a = -3 and b = -42.
Applying the formula, we can calculate the x-coordinate of the vertex (the axis of symmetry):
x = -b / (2a)
x = -(-42) / (2(-3))
x = 42 / (-6)
x = -7
Therefore, the x-coordinate of the vertex is -7.
To find the equation of the axis of symmetry, we use the value of x in the form x = h, where (h, k) is the vertex.
Hence, the equation of the axis of symmetry is x = -7.
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