Seo-jun has 20 nickels and 12 quarters in his pocket.
let
x = number of nickels coins
y = number of quarters coins
He has a total of 32 coins in his pocket. Therefore,
Total coins:x + y = 32The total coins is worth $4. Therefore,
Total worth of coins:0.05x + 0.25y = 4Therefore,
x + y = 32
0.05x + 0.25y = 4
0.05x + 0.05y = 1.6
0.05x + 0.25y = 4
0.2y = 2.4
y = 2.4 / 0.2
y = 12
x = 32 - 12
x = 20
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Which number line shows the solutions to n > -2?
++++
+
-6-5-4-3-2-1 0 1 2 3 4 5 6
←++++
H
-6-5-4-3 -2 -1 0 1 2 3 4 5 6
+++
++++++
-6-5-4-3-2-1 0 1 2 3 4 5 6
+++++
-6-5-4-3-2-1 0 1 2
3 14 5 6
Done -
2
what is the measure of ∅?
A. 2.5 π radians
B. 2.5 radians
C. 4 radians
D. 5 radians
Answer:
C. 4 radians
Step-by-step explanation:
\(20=\frac{\pi (Ctrl.Angle)(5)}{180}\)
Ctrl Angle = ∅
∅ = \(\frac{(20)(180)}{5\pi } =\frac{3600}{5\pi } =\frac{720}{\pi }\)
in radians:
∅ = \(\frac{720}{180} =4\)
Hope this helps
Find the area of region 1 of the composite figure:
Answer:
A₁ = 950 mm²
Step-by-step explanation:
region 1 is a trapezium with area (A₁ ) calculated as
A₁ = \(\frac{1}{2}\) h (b₁ + b₂)
where h is the perpendicular height between bases and b₁, b₂ the bases
here h = 38 , b₁ = 30 and b₂ = 20 , then
A₁ = \(\frac{1}{2}\) × 38 × (30 + 20) = 19 × 50 = 950 mm²
(1 ÷ 2 3 ⁄ 4 ) + (1 ÷ 3 1 ⁄ 2 ) = _____.
Answer:
50/77
Step-by-step explanation:
(1÷2 3/4)+(1÷3 1/2)
2 3/4 is same as 11/44
1/2 is same as 7/2
so to divide fraction you have to flip the second number and multiply
so 1 times 4/11=4/11
and 1 times 2/7=2/7
4/11 +2/7=28/77+22/77=50/77
Which issue is least likely arise in machine learning (ml) and artificial intelligence (ai)?
The issue of too many proficient business-savvy programmers is least likely to arise in machine learning(ml) and artificial intelligence(ai).
What is machine learning?
The process by which computers learn to recognize patterns, or the capacity to continuously learn from and make predictions based on data, then make adjustments without being specifically programmed to do so, is known as machine learning (ML), a subcategory of artificial intelligence.
The operation of machine learning is quite complicated and varies according to the task at hand and the algorithm employed to do it. However, at its foundation, a machine learning model is a computer that analyzes data to spot patterns before using those realizations to better fulfill the work that has been given to it. Machine learning can automate any task that depends on a set of data points or rules, even the more difficult ones.
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I need help on this equation i know the answer is (4,6) i dont know were to put the points in the graph i also need help explaing hw i got the answer because i am not sure how
Answer:
Step-by-step explanation:
The region R is bounded by y = ln x, x = 1 and y = 2. Use the Shell method to set up integrals for the volume of the solid of revolution obtained by revolving the region R (a) around the Y-axis. (b) around the line x = -1. (c) around the X-axis. (d) around the line y = 4.
(a) Around the Y-Axis:The shell method states that the volume of a solid of revolution obtained by rotating a plane region about a line is equal to the sum of the volumes of all the cylindrical shells whose heights are equal to the height of the plane region and whose diameters lie along the rotating line.
We must integrate the surface area of each cylindrical shell to find its volume, with surface area = 2πrh and height equal to the thickness of the shell. The thickness of the shell is dy in this case, and the radius of each cylindrical shell is x. Therefore, the volume of the solid of revolution about the line x = -1 is V = π(5 - 2 ln x). (c) Around the X-Axis:The washer method is used to find the volume of the solid of revolution around the X-axis, which states that the volume of a solid of revolution is equal to the difference between the volumes of two cylinders.
When rotating around the X-axis, the cylindrical shell's radius is x, while its height is the thickness of the shell, which is dx.The volume of the solid of revolution around the X-axis is given by V
= ∫(x = 1 to x = e^2) π[(ln x)^2 - 0] dx
= π ∫(x = 1 to x = e^2) (ln x)^2 dx.We integrate by parts to solve the integral, using u
= (ln x)^2 and dv
= dx to obtain V
= π[(ln x)^2 x - 2 ∫(x = 1 to x = e^2) ln x dx].Using u-substitution with u
= ln x and du
= dx/x, the integral reduces to V
= π[(ln x)^2 x - 2x(ln x - 1)] from x
= 1 to x
= e^2.
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Given f(x) = ax + b/x,
f(1) = 1, and f(2)= 5, find constants a and b
Answer:
a = 3, b = - 2
Step-by-step explanation:
Given f(1) = 1 and f(2) = 5, that is
substitute x = 1 and equate to 1, substitute x = 2 and equate to 5
a + b = 1 → (1)
2a + \(\frac{b}{2}\) = 5 → (2)
Multiplying (1) by - 2 and adding to (2) will eliminate a
- 2a - 2b = - 2 → (3)
Add (2) and (3) term by term to eliminate a
0 - \(\frac{3}{2}\) b = 3
- \(\frac{3}{2}\) b = 3 ( multiply both sides by - \(\frac{2}{3}\) )
b = - 2
Substitute b = - 2 into (1)
a - 2 = 1 ( add 2 to both sides )
a = 3
Then a = 3 and b = - 2
What is the function rule for this table? 10 POINTS! BRAINLIEST to correct answer!
need some help with the question in the image
Cheers
\(a) \: \: 1000 \times \frac{1}{100} = 10 \\ \)
\(b) \: \: 44 \times \frac{25}{100} = 11 \\ \)
\(c) \: \: 50 \times \frac{30}{100} = 15 \\ \)
Have a great day ♡♡♡♡♡WILL GIVE BRAINLIEST
questions 35-45 odd
please show work
Answer:
35. Domain is -∞,∞ Range is y=0.
Step-by-step explanation:
No solution.
find 9 f(x) dx 0 if f(x) = 7 for x < 7 x for x ≥ 7 .
The function is 130/2.
A relation between a collection of inputs and outputs is known as a function. A function is, to put it simply, a relationship between inputs in which each input is connected to precisely one output. Each function has a range, codomain, and domain. The usual way to refer to a function is as f(x), where x is the input. A function in mathematics from a set X to a set Y allocates exactly one element of Y to each element of X.
According to question,
\(\int\limits^9_0 {f(x)} \, dx \\ \int\limits^7_0 {f(x)} \, dx+\int\limits^9_7 {f(x)} \, dx\\ \int\limits^7_0 {7} \, dx + \int\limits^9_7 {x} \, dx\\ (7x)^{7} _{0} + (\frac{x^{2} }{2})^{9} _{7}\)
7x7 - 7x0 + 81/4 - 49/4
49 + 32/2
130/2
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Tyra spends a total of $33 for three T-shirts. Each T-shirt costs the same amount of money.
Which bar model could be used to show this situation?
3
Х
Х
O
Х
33
3
O
Х
33
33
о
Х
3
Х
Х
Х
33
Answer:
number 4/the last option
Step-by-step explanation:
this is because each individual Tshirt = X. and we already know that we have 33$ to spend
For the given composite function, identify the inner function, u = g(x), and the outer function, y = f(u). (Use non-identity functions for f(x) and g(x).) y = 1 + 8x (F(u), g(x)) = Rectangular Snip Find the derivative dy/dx?
The derivative of the composite function y = 1 + 8x is 8
For the given composite function y = 1 + 8x, we can identify the inner function (g(x)) and the outer function (f(u)) as follows:
1. Inner function, g(x): In this case, the inner function is simply g(x) = 8x.
2. Outer function, f(u):
Since the composite function is y = 1 + 8x, we can rewrite it as y = 1 + u, where u = 8x.
Therefore, the outer function is f(u) = 1 + u.
Now, let's find the derivative dy/dx using the chain rule:
dy/dx = dy/du * du/dx
First, find the derivatives of the outer and inner functions:
1. df/du: The derivative of f(u) = 1 + u with respect to u is df/du = 1.
2. dg/dx: The derivative of g(x) = 8x with respect to x is dg/dx = 8.
Now, apply the chain rule:
dy/dx = (dy/du) * (du/dx) = (1) * (8) = 8
So, the derivative dy/dx of the given composite function y = 1 + 8x is 8.
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Use the method of symmetry to find the extreme value of each quadratic function and the value of x for which it occurs.
f(x)=(x-3)(x+8
a) x-intercepts are _________
b) midpoint of the x-intercepts is ___________
c) the extreme value is _______________
d) f(_) = ______________
Answer:
See belowStep-by-step explanation:
The x-intercepts are the points with y- coordinate of 0
(x - 3)(x + 8) = 0x - 3 = 0 or x + 8 = 0x = 3 or x = - 8a) x-intercepts are
3 and - 8b) midpoint of x-intercepts is
(3 - 8)/2 = - 5/2 = - 2.5c) The extheme value has x- coordinate of - 2.5 and y- coordinate
(-2.5 - 3)(- 2.5 + 8) = (-5.5)(5.5) = - 30.25d) f(- 2.5) = - 30.25
Answer:
\(\sf a) \quad x = -8 \:\:and \:\:x = 3\)
\(\sf b) \quad \left(-\dfrac{5}{2},0\right)\)
\(\sf c) \quad \left(-\dfrac{5}{2},-\dfrac{121}{4}\right)\)
\(\sf d) \quad f(x)=\left(x+\dfrac{5}{2}\right)^2-\dfrac{121}{4}\)
Step-by-step explanation:
Part (a)
The x-intercepts are the x-values when the curve crosses the x-axis, so when the function is equal to zero:
\(\implies f(x)=0\)
\(\implies (x-3)(x+8)=0\)
Therefore:
\((x-3)=0 \implies x=3\)
\((x+8)=0 \implies x=-8\)
Therefore, the x-intercepts are x = -8 and x = 3
Part (b)
\(\textsf{Midpoint}=\left(\dfrac{x_2+x_1}{2},\dfrac{y_2+y_1}{2}\right)\quad \textsf{where}\:(x_1,y_1)\:\textsf{and}\:(x_2,y_2)\:\textsf{are the endpoints}}\right)\)
\(\sf \implies Midpoint=\left(\dfrac{-8+3}{2},\dfrac{0+0}{2}\right)=\left(-\dfrac{5}{2},0\right)\)
Therefore, the midpoint of the x-intercepts is (-5/2, 0)
Part (c)
The extreme value is the vertex. The vertex is:
the minimum point if the parabola opens upwardsthe maximum point if the parabola open downwardsThe x-coordinate of the vertex is the x-value of the midpoint of the x-intercepts. Therefore, the x-value of the extreme value is x = -5/2.
To find the y-coordinate, substitute this into the given equation:
\(\implies \sf y=\left(-\dfrac{5}{2}-3\right)\left(-\dfrac{5}{2}+8\right)=-\dfrac{121}{4}\)
Therefore, the extreme value is:
\(\sf \left(-\dfrac{5}{2},-\dfrac{121}{4}\right)\)
Part (d)
The function in vertex form is:
\(\sf f(x)=\left(x+\dfrac{5}{2}\right)^2-\dfrac{121}{4}\)
\(\begin{aligned}\implies \sf f\left(-\dfrac{5}{2}\right)& = \sf \left(-\dfrac{5}{2}+\dfrac{5}{2}\right)^2-\dfrac{121}{4}\\\\ & = \sf 0 -\dfrac{121}{4}\\\\ & = \sf -\dfrac{121}{4} \end{aligned}\)
Which is true about the angle relationships in the
rectangle? Check all that apply.
BEA and Z CED are vertical angles and equal
76º.
ZABE and Z CBE are complementary angles.
BEC and Z CED are vertical angles.
BEA and AED are supplementary angles
whose sum is 180°
BEC and AED are adjacent angles.
Answer:
∠BEA = ∠CED = 104° (vertical angles)
∠ABE and ∠CBE are complimentary angles, i.e. ∠ABE + ∠CBE = 90°
∠BEA and ∠AED are supplementary angles. 104 + 76 = 180
Step-by-step explanation:
Vertical angles are opposite angles formed by the intersection of two lines. Vertical angles are congruent to each other.
Complementary angles are angle whose sum add up to 90° while supplementary angles are angles whose sum add up to 180°
Two angles are adjacent if they are placed side by side and share the same vertex.
∠BEA = ∠CED = 104° (vertical angles)
∠ABE and ∠CBE are complimentary angles, i.e. ∠ABE + ∠CBE = 90°
∠BEC and ∠CED are not vertical angles
∠BEA and ∠AED are supplementary angles. 104 + 76 = 180
∠BEA and ∠AED are not adjacent angles
Answers: A B D
Step-by-step explanation:
I did the quiz
Carla earned b bonus points. Shannon earned 24 more points than carla. Choose the expression that shows how many bonus points Shannon earned
Answer:6777
Step-by-step explanation: 1+6776=6777
How to graph y=-1/4x-5
Step-by-step explanation:
Graph y=1/4x+5
y=14x+5�=14�+5
Rewrite in slope-intercept form.
y=14x+5�=14�+5
Use the slope-intercept form to find the slope and y-intercept.
Slope: 1414
y-intercept: (0,5)(0,5)
Any line can be graphed using two points. Select two x� values, and plug them into the equation to find the corresponding y� values.
xy0546��0546
Graph the line using the slope and the y-intercept, or the points.
Slope: 1414
y-intercept: (0,5)(0,5)
xy0546��0546

Which polynomial function has a leading coefficient of 1, roots -2 and 7 with multiplicity 1, and root 5 with
multiplicity 2?
Of(x) = 2(x + 7)(x + 5)(x - 2)
Of(x) = 2(x-7)(x - 5)(x + 2)
Of(x) = (x + 7)(x + 5)(x + 5)(x - 2)
of(x) = (x-7)(x-5)(x - 5)(x + 2)
Mark this and return
Save and Exit
Next
Sb
Answer:
of(x) = (x-7)(x-5)(x - 5)(x + 2)
Step-by-step explanation:
On the following grid, AB is shown with along with point C. Draw two lines on this grid that pass through C, one of which is parallel to AB and one that is perpendicular to AB . Give the coordinates of one point, other than C, that lies on each line.
Point that lies on parallel line:
Point that lies on perpendicular line:
The points on each linear function are given as follows:
Parallel line: (1,8).Perpendicular line: (2,-1).What is a linear function?The slope-intercept representation of a linear function is given as follows:
y = mx + b
The coefficients of the function and their meaning are described as follows:
m is the slope of the function, representing the change in the output variable y when the input variable x increases by one.b is the y-intercept of the function, which is the initial value of the function, i.e., the numeric value of the function when the input variable x assumes a value of 0.In the context of this problem, the points on segment AB are given as follows:
A(-7,-4), B(5,4).
Hence the slope is:
m = (4 - (-4))/(5 - (-7)) = 8/12 = 2/3.
The coordinates of point C are given as follows:
C(-2,6).
When two lines are parallel, they have the same slope, hence:
y = 2/3x + b
When x = -2, y = 6, hence the intercept b is calculated as follows:
6 = 2/3(-2) + b
b = 6 + 4/3
b = 22/3.
Hence the parallel line is:
y = 2/3x + 22/3.
Another point on the line is found when x = 1, hence:
y = 2/3(1) + 22/3 = 24/3 = 8.
Hence point (1,8).
When two lines are perpendicular, the multiplication of their slopes is of -1, hence:
2/3m = -1
m= -3/2.
Hence:
y = -3/2x + b
When x = -2, y = 6, hence the intercept b is calculated as follows:
6 = -3/2(-2) + b
6 = 3 + b
b = 3.
Hence the perpendicular line is:
y = -3/2x + 2.
Another point is when x = 2, hence:
y = -3/2(2) + 2
y = -1.
Point (2,-1).
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Write three rational numbers between −1 /5 and 1 /2
Answer:
-1/10, 2/10, and 4/10
Step-by-step explanation:
A rational number is a number that is in the form of p/q, where p and q are integers, and q is not equal to 0.
First, what is the lcm of 5 and 2? the lcm is 10, because that is the lowest number than can be divided separately by 5 and 2 and the results would still be a whole number.
We now need to find 3 rational numbers between -2/10 and 5/10. It's easy now that I've explained it, right?
-1/10, 2/10, and 4/10 are between -1/5 and 1/2 and are integers with the given explanation.
Hope this helps.
There is a line that includes the point
(7, 7) and has a slope of -1/10. What is its equation in slope form.
Answer:
y= -1/10x + 77 /10.........
Who am I? Choose the names of the quadrilateral.
I have right angles. My opposite sides are parallel, and all four of my sides are congruent.
Answer:
Square
Step-by-step explanation:
Square and Rhombus has all sides equal and opposite sides parallel.
But only in square angles are right angles.
Answer:
square
Step-by-step explanation:
Are the vectors u=[−105],v=[13−5] and w=[−1125] linearly independent? If they are linearly dependent, find scalars that are not all zero such that the equation below is true. If they are linearly independent, find the only scalars that will make the equation below true. u+v+w=0
The vectors u=[−10 5], v=[13 −5], and w=[−11 25] are linearly dependent. we can find the scalars c1, c2, and c3 that satisfy the equation u+v+w=0.
To find the scalars that satisfy the equation u+v+w=0, we need to determine a nontrivial linear combination of the vectors that equals zero.
To check for linear independence, we construct a matrix A using the given vectors as its columns. If the rank of A is less than the number of columns (in this case, 3), then the vectors are linearly dependent.
A = [u v w] = [[-10 5] [13 -5] [-11 25]]
We can row reduce the matrix A to determine its rank. After row reduction, we find that the rank of A is 2, which is less than 3. Therefore, the vectors u, v, and w are linearly dependent.
To find the scalars that satisfy the equation u+v+w=0, we can write it as a linear combination:
c1u + c2v + c3w = 0
Substituting the values of u, v, and w, we have:
c1[-10 5] + c2[13 -5] + c3[-11 25] = [0 0]
Simplifying, we get the system of equations:
-10c1 + 13c2 - 11c3 = 0
5c1 - 5c2 + 25c3 = 0
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Vibrations of harmonic motion can be represented in a vectorial form. Analyze the values of displacement, velocity, and acceleration if the amplitude, A=2+T, angular velocity, ω=4+U rad/s and time, t=1 s. The values of T and U depend on the respective 5th and 6th digits of your matric number. For example, if your matric number is AD201414, it gives the value of T=1 and U=4.
The values of displacement, velocity, and acceleration are 2.68 m, 2.24 m/s, and -18.07 m/s2 respectively.
We know that the amplitude, A = 2 + T; the angular velocity, ω = 4 + U rad/s; and time, t = 1s. Here, the value of T = 1 and the value of U = 4 (as mentioned in the question).
Harmonic motion is a motion that repeats itself after a certain period of time.
Harmonic motion is caused by the restoring force that is proportional to the displacement from equilibrium.
The three types of harmonic motions are as follows: Free harmonic motion: When an object is set to oscillate, and there is no external force acting on it, the motion is known as free harmonic motion.
Damped harmonic motion: When an external force is acting on a system, and that force opposes the system's motion, it is called damped harmonic motion.
Forced harmonic motion: When an external periodic force is applied to a system, it is known as forced harmonic motion.Vectorial formVibrations of harmonic motion can be represented in a vectorial form.
A simple harmonic motion is a projection of uniform circular motion in a straight line.
The displacement, velocity, and acceleration of a particle in simple harmonic motion are all vector quantities, and their magnitudes and directions can be determined using a coordinate system.
Let's now calculate the values of displacement, velocity, and acceleration.
Displacement, s = A sin (ωt)
Here, A = 2 + 1 = 3 (since T = 1)and, ω = 4 + 4 = 8 (since U = 4)
So, s = 3 sin (8 x 1) = 2.68 m (approx)
Velocity, v = Aω cos(ωt)
Here, v = 3 x 8 cos (8 x 1) = 2.24 m/s (approx)
Acceleration, a = -Aω2 sin(ωt)
Here, a = -3 x 82 sin(8 x 1) = -18.07 m/s2 (approx)
Thus, the values of displacement, velocity, and acceleration are 2.68 m, 2.24 m/s, and -18.07 m/s2 respectively.
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From her window 5 m above the ground, Sherri spots a turtle on the ground at a 34° angle of depression.
To the nearest tenth of a meter, how far is the turtle from the base of the Sherri’s building?
7.4 m
4.8 m
4.1 m
3.4 m
Answer:
7.4 m it's because toes are yummy
Cleo sold lemonade at her lemonade stand. On Saturday, she sold 6 pitchers of lemonade. On Sunday, she sold as much lemonade as on Saturday. How many pitchers of lemonade did Cleo sell on Sunday?
Answer:
12 pitchers
Step-by-step explanation:
Saturday, 6 pitchers
Sunday, same number of pitchers with Saturday, = 6 pitchers
Total pitchers = 6 + 6 = 12 pitchers
Answer:
Cleo sold 6 pitchers of lemonade on Sunday.
Step-by-step explanation:
Cleo sold lemonade at her lemonade stand.
She sold 6 pitchers on Saturday.
On Sunday, she sold as many pitchers as Saturday.
This implies that she sold 6 pitchers too.
She sold 6 pitchers on Saturday, and 6 pitchers on Sunday.
evaluate the double integral. d y x2 1 da, d = {(x, y) | 0 ≤ x ≤ 8, 0 ≤ y ≤ x }
This double integral evaluates to a value of 2/3 x
What is double integral?
Double integral is a type of integration which involves the integration of two variables. It is used to calculate the area or volume of a function of two variables. This type of integration is used to solve problems in areas such as physics, engineering, probability and statistics. Double integration can be used to calculate the center of mass of a two-dimensional object, or the moments of inertia of a two-dimensional object. In its most basic form, this type of integration involves the calculation of a limit where two variables are integrated with respect to each other.
To evaluate the double integral, one must use the formula for the area of a two-dimensional region: ∫∫f(x, y)dA = ∫∫f(x, y)dxdy. The limits of integration of the region D must also be taken into account. Thus, the double integral can be evaluated as follows:
∫∫(x^2-1)dA = ∫ 0 to 1
∫ 0 to x (x^2-1)dx dy = 2/3 x
This double integral evaluates to a value of 2/3 x
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Find the values that complete the table at the right for y=-4x
The table of values of the equation y = -4x is
x y
-2 8
-1 4
0 0
1 -4
How to complete the table of values of the equationGiven that
y = -4x
To find the values that complete the table for the given equation y=-4x, we substitute each value of x and evaluate y.
When x = -2, y = -4x = -4(-2) = 8
When x = -1, y = -4x = -4(-1) = 4
When x = 0, y = -4x = -4(0) = 0
When x = 1, y = -4x = -4(1) = -4
So the completed table is:
x y
-2 8
-1 4
0 0
1 -4
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Can someone help with this question?
A cubic function is known as a function whose graph is in the shape of a horizontal S.
The graph that meets these requirements is the graph D.