Answer:
Step-by-step explanation:
The general form of a quadratic function is given by:f(x) = ax^2 + bx + cwhere a, b, and c are constants.To find the specific equation of a quadratic function with a given vertex and a point on the graph, we can use the vertex form of the quadratic function:f(x) = a(x - h)^2 + kwhere (h, k) is the vertex.Using the given vertex (0, 3), we have:f(x) = a(x - 0)^2 + 3Simplifying, we get:f(x) = ax^2 + 3Now we can use the given point (2, 7) to find the value of a.Substituting x = 2 and y = 7 into the equation above, we get:7 = a(2)^2 + 3Simplifying, we get:7 = 4a + 34a = 4a = 1Therefore, the general form of the quadratic function is:f(x) = x^2 + 3
What are the factors of 42 to find it’s prime numbers and how do I put it in a factor tree
Answer:
See below
Step-by-step explanation:
Starting with 42, there would be two branches of 2 and 21 connected to 42. Since 2 is prime, there are no more branches. Since 21 is composite, then two more branches are drawn of 3 and 7 connected to 21. Since 3 and 7 are prime, there are no more branches.
Therefore, the prime factorization of 42 is 2*3*7, and its factors would be 1,2,3,6,7,14,21,42.
Please please help me please please help please please
Step-by-step explanation:
come on ! find yourself 2 points on each of the two lines, and then draw them.
the first point for every line is for me always the point with x = 0 (the y-axis intercept).
so, the first line has a point (0, -1)
because y = -1/5 × 0 - 1 = -1
and the second line has (0, -6)
because y = 4/5 × 0 - 6 = -6
for the second point I select an x value that eliminates the fractions and allows me to deal with integers.
and that is in both cases x = 5.
so, the second point of the first line is then (5, -2)
because y = -1/5 × 5 - 1 = -1 - 1 = -2
and the second point of the second line is (5, -2)
because y = 4/5 × 5 - 6 = 4 - 6 = -2
and so, I have accidentally already found the solution of this system of 2 equations, as the solution is the crossing point between both lines (= the point they both contain).
and that is a we can see, (5, -2) ...
HELPPP!! I'LL MARK U
The area of the figure is ______ square units.
Answer:
8 units
Step-by-step explanation:
Area of square:
length * width
2 * 3
= 6 units
Area of triangle:
1/2 * base * height
1/2 * 2 * 2
= 2 units
Area of entire shape:
6 + 2
= 8 units
So, the area of the shape is 8 units.
If this answer helped you, please leave a thanks!
Have a GREAT day!!!
An individual is baking 3 batches of cookies. They used 1.8 oz. of vanilla in one batch of the cookies, 1.25 oz. of vanilla in the second batch and .95 oz. in the third batch. Convert these decimals into fractions, and then put them in ascending order.
Answer:
19/20 , 1 1/4 , 1 4/5
Step-by-step explanation:
1.8 = 1 4/5 (fraction)
1.8 converts to 18/10. This can be simplified twice, firstly by making it 9/5 since both 18 and 10 are divisible by two, but can be simplified further to 1 4/5
1.25 = 1 1/4 (fraction)
1.25 converts to 125/100. This can be simplified to 5/4 or 1 1/4
0.95 = 19/20 (fraction)
0.95 converts to 95/100. This can be simplified to 19/20
Ascending Order (smallest to largest)
smallest - 19/20
middle - 1 1/4
largest - 1 4/5
I believe this is the right answer, but haven't done fractions in a while so may want to double check to make sure
A ladder of length (2x+6) feet is positioned x feet from a wall. If the ladder reaches a height of (2x+4) feet along the wall. Find the longest leg.
A. 10ft
B. 24ft
C. 26ft
D. 13cm
Using the Pythagoras theorem, the longest leg has the length of 24 feet.
Given that,
A ladder of length (2x+6) feet is positioned x feet from a wall.
Height of the ladder = (2x + 6) feet
Distance of ladder from the wall = x feet
Height of the wall that the ladder is placed = (2x + 4) feet
These three lengths form s right triangle where (2x + 6) feet is the hypotenuse.
Longest leg is (2x + 4) feet
Using the Pythagoras theorem,
(2x + 6)² = (2x + 4)² + x²
4x² + 24x + 36 = 4x² + 16x + 16 + x²
4x² + 24x + 36 = 5x² + 16x + 16
x² - 8x - 20 = 0
(x - 10) (x + 2) = 0
x = 10 or x = -2
x = 2 is not possible.
So x = 10
Longest leg = 2x + 4 = 20 + 4 = 24 feet
Hence the length of the longest leg is 24 feet.
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In ΔUVW, u = 76 inches, w = 71 inches and ∠W=69°. Find all possible values of ∠U, to the nearest degree.
The value of the angle U from the calculation is 88 degrees.
How do you solve a triangle?The sine rule can be applied in a variety of situations, such as determining a triangle's unknown side lengths or angles. The sine rule can be used to locate the missing side or angle if you know the lengths of two sides and the measure of an angle (not necessarily the included angle).
By the use of the sine rule;
u/Sin U = w/Sin W
Thus;
76/Sin U = 71/Sin 69
Sin U = 76Sin 69/71
U = Sin-1 (76Sin 69/71)
U = 88 degrees
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2(2x - 4) = 3(x + 4)
Answer:
24
Step-by-step explanation:
i dont know if its correct
Please help! Due soon!
Answer:
a/..the first is 3/8
b/ 84/280
Answer:
a) 3/8
b) 3/10
Step-by-step explanation:
multiply the numerators and the denominators and then simplify.
a) is just 3*1 divided by 4*2, no simplification possible
b) is 4*21 divided by 7*40 is 84/280 and simplifies to 3/10 (divide by 28)
Plz help me it history plzz help me fast
Answer:
I got F but im not 100% sure.
Step-by-step explanation:
Mike bought 3 iPad minis and one car charger. Altogether he spent $1020.95. The charger cost $24.59. How much did each iPad mini cost?
Answer:
332.12
Step-by-step explanation:(1020.95-24.95)/3
What is the surface area of this shape?
Answer:
88 square cm
Step-by-step explanation:
Surface area of combined solids:Surface area of down rectangular prism:
l = 6cm ; w = 3 cm & h = 2 cm
\(\sf \boxed{Total \ surface \ area \ of \ rectangular \ prism = 2*(lw + wh+hl)}\)
= 2*(6*3 + 3*2 + 2*6)
= 2* (18 + 6 + 12)
= 2 * 36
= 72 cm²
Lateral surface area of the top rectangular prism:
l = 3 cm
w = 1 cm
h = 4 - 2 = 2 cm
LSA = 2h( l + w)
= 2*2 *( 3 + 1)
= 4 * 4
= 16 cm²
Surface area of the shape = 72 + 16
= 88 cm²
Answer:
a = 88 cm2
Step-by-step explanation:
\(a=(4)(3)+2(4)(1)+2(5)(2)+2(3)(2)+(1)(3)+6(3)+5(3)=12+8+20+12+3+18+15\)
\(a=88cm^{2}\)
Hope this helps
If the mean of a symmetrical distribution is 245, which of the following valuescould be the median of the distribution?O A. 245B. 275C. 215D. 305
In a symmetric distribution, the left side of the distribution mirrors the right side. Therefore, because of being 'identical' on both sides, the frequencies are symmetrically spread across the distribution.
One implication of such symmetry is that the mean, mode, and median are at the same point. Then, if the mean is 245, the median has to be 245 too.
The answer is option A, 245We have 55 independent normal observations all with mean 100. The first 50 observations have variance 76.4, and the last five have variance 127. (a) Calculate the probability that the first observation X1 is between 98 and 103. (b) Calculate the probability that the average X¯ = 1 55 P55 i=1 Xi is between 98 and 103.
Answer:
0.2241 ; 0.9437
Step-by-step explanation:
Number of independent normal observations = 55
Mean(m) = 100
Variance of first 50 = 76.4
Variance of last five = 127
Probability that first observation is between 98 and 103
Zscore = x - m / sqrt(v)
For x = 103
Zscore = (103 - 100) /sqrt(76.4) = 0.34
For x = 98
Zscore = (98 - 100) / sqrt(76.4) = - 0.23
P(Z < - 0.23) = 0.4090
P(Z < 0.34) = 0.6331
0.6331 - 0.4090 = 0.2241
B) 1/n²Σ[(X1.V1) + (X2. V2)]
1/55²[(50*76.4) + (5*127)]
1/55² [3820 + 635]
1/55² [4455]
4455/3025
= 1.4727
Hence, variance of entire sample = 1.4727
X = 98 and 103
Zscore = x - m / sqrt(v)
For x = 103
Zscore = (103 - 100) /sqrt(1.4727) = 2.47
For x = 98
Zscore = (98 - 100) / sqrt(1.4727) = - 1.65
P(Z < - 1.65) = 0.0495
P(Z < 2.47) = 0.9932
0.9932 - 0.0495 = 0.9437
Find a formula for the nth term in this
arithmetic sequence:
a1 = 9, a2 = 13, a3 = 17, a4 = 21, ...
an =?n+
Answer: an=4n+5
Step-by-step explanation:
a1 = 9, a2 = 13, a3 = 17, a4 = 21, ...
A formula for the nth term of the arithmetic sequence:
\(a_n=a_1+d(n-1)\)
where: a₁ - is the first term of the arithmetic sequence
d - is the difference between the terms of the arithmetic sequence
d=a₂-a₁=a₃-a₂=a₄-a₃= ...
d=13-9=17-13=31-17= ...
d=4
n - is the number of the arithmetic sequence term
\(a_n=9+4(n-1)\\\\a_n=9+4n-4\\\\a_n=4n+5\)
Use algebraic methods to find as many intersection points of the following curves as possible. Use graphical methods to identify the remaining intersection points. R = 6 sin theta and r = 6 cos theta the intersection point(s) is/are_______
(Type an ordered pair. Type exact answer for each coordinate, using phi as needed. Type the coordinate for theta in radians between 0 and phi. Use a comma to separate answers as needed)
The intersection points are (6, 6) and (-6, -6).
What is Intersection points?
The point at which two lines or curves intersect is referred to as the point of intersection. The point at which two curves intersect is crucial because it is the point at which the two curves take on the same value.
The given curves are the polar equations of two circles with radii 6. To find their intersection points, we can set the two equations equal to each other and solve for Ф.
6 sin(Ф) = 6 cos(Ф)
Dividing both sides by 6 and rearranging terms, we get:
tan(Ф) = 1
This equation has infinitely many solutions, but we are only interested in those that lie in the interval [0, π/2].
Ф = π/4 satisfies this condition and corresponds to the point (6, 6) in Cartesian coordinates.
Since the two curves are circles, they are symmetrical about the origin. Therefore, we can deduce that the other intersection point is (-6, -6).
Therefore, the intersection points are (6, 6) and (-6, -6).
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a translation of T2, –7(x, y) is applied to ΔABC, what are the coordinates of B'?
If a translation of T (2, -7) is applied to the triangle ABC as shown in the figure attached hereby for reference, and B (1, 5) gets repositioned to B', then the current coordinates of B' are (3, -2).
As per the question statement, a translation of T (2, -7) is applied to the triangle ABC as shown in the figure attached hereby for reference, and B (1, 5) gets repositioned to B'.
We are required to calculate the coordinates of B'.
To solve this question, we need to know what Translation (a, b) to (x, y) and (-a, -b) to (x, y) means. Translation (a, b) to (x, y) means the abscissa "x" is to be shifted to the right by "a" units while the ordinate "y" is to be shifted to the right by "b" units, i.e., after translation, the new coordinates become [(a + x), (b + x)]. On the other hand, Translation (-a, -b) to (x, y) means the abscissa "x" is to be shifted to the left by "a" units while the ordinate "y" is to be shifted to the left by "b" units, i.e., after translation, the new coordinates become [(a - x), (b - x)].
Here, as per the above mentioned concept, a translation of T (2, -7) if applied to the point B (1, 5), the new point B' will be at \([(1+2), (5+(-7)]=[3, (-2)]\).
Translation: In Coordinate Geometry, a translation is a repositioning of a point or a figure from one location to another location without changing its size, shape or orientation.Coordinates: The coordinates of a point are a pair of numbers that define its exact location on a two-dimensional coordinate plane by using the horizontal and vertical distances from the two reference axesTo learn more about Translation, click on the link below.
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Answer: D (3,-12)
Step-by-step explanation:
If f(x)= 2(3 to the power of x) +1 what is the value of f(2)
Answer:
19
Step-by-step explanation:
f(x)= 2(3^x) + 1
f(2)= 2(3^2) + 1
= 2(9) + 1
= 18 + 1
= 19
Erin planted t tomato plants. Leo planted 5 fewer tomato plants than Erin. Filipe planted 10 fewer tomato plants than Erin. Drag and drop the expressions into the boxes to write an expression that represents the total number of tomato plants Erin, Leo, and Filipe planted in all.
Here are the possible expressions that go into this:
t
5
10
t+5
t+10
t+15
t-10
t-5
t+t-5+t-15
Hope this helps! :D
Answer:
t+t-5+t-15
Step-by-step explanation:
I didn't have it in a quiz, I just tried it out from the question given.
good luck!
-11 + 4(3+1) + 3(5-9) + 7(6-8) + 25
Answer:
4
Step-by-step explanation:
-11 + 4(3+1) + 3(5-9) + 7(6-8) + 25
-11+4*4+3*-4+7*-2+25
-11+16+-12+-14+25
4
Are they congruent? Yes or Not Enough Information b) If so, justification:
Answer:
Yes, these triangles are congruent by Angle-Side-Angle.
Suppose that the probability that a customer plans to make a purchase is 0.32. Suppose that the probability of responding to an advertisement given that the customer plans to make a purchase is 0.63 and that the probability of responding to an advertisement given that a person does not plan to make a purchase is 0.16. Given that a person responds to the advertisement, what is the probability that they plan to make a purchase?
Answer:
0.6495
Step-by-step explanation:
This is question based on conditional probability
The probability that a customer plans to make a purchase = 0.32.
The probability that a customer plans not to make a purchase = 1 - 0.32
= 0.68
The probability of responding to an advertisement given that the customer plans to make a purchase = 0.63
The probability of responding to an advertisement given that a person does not plan to make a purchase = 0.16.
Given that a person responds to the advertisement, what is the probability that they plan to make a purchase is calculated as:
0.32 × 0.63/(0.32 × 0.63) + (0.16 × 0.68)
= 0.2016/ 0.2016 + 0.1088
= 0.2016/0.3104
= 0.6494845361
Approximately = 0.6495
help please graphing
Answer:
red: y = 5green: y = -2x +1blue: y = 2x -1yellow: y = -1/2x -1Step-by-step explanation:
You want the equations for the lines shown on the graph.
Slope-intercept formThe slope-intercept form of the equation for a line is ...
y = mx + b
where m is the slope, and b is the y-intercept.
SlopeThe slope of a line is the ratio of its "rise" to its "run". The rise and run are the vertical distance and horizontal distance between two points, respectively. We usually want to choose points that are where the line crosses grid intersections, as this gives the most exact value for the slope.
Red line: There is no rise for any value of run. The slope is ...
m = rise/run = 0/1 = 0
Green line: The green line crosses the y-axis at y = 1, and crosses the next grid intersection to the right at (1, -1). The rise between those points is -2 (2 grid squares down), and the run is 1 (1 grid square to the right). The slope is ...
m = -2/1 = -2
Blue line: The blue line crosses the y-axis at y = -1, and crosses the next grid intersection to the right at (1, 1). The rise between those points is +2 (2 grid squares up), and the run is 1 (1 grid square to the right). The slope is ...
m = 2/1 = 2
Yellow line: The yellow line crosses the y-axis at y = -1, and crosses the next grid intersection to the right at (2, -2). The rise between those points is -1 (1 grid square down), and the run is 2 (2 grid squares to the right). The slope is ...
m = -1/2
Y-Intercept.
The y-intercept is the value of y where the line crosses the y-axis. In the slope-intercept form equation (y=mx+b), this is the value of 'b'. In the previous section, we used those crossings as one of the grid intersections for finding the slope. They are ...
Red: +5Green: +1Blue: -1Yellow: -1EquationsUsing the slope and y-intercept for each line, we can now write the equations:
Red: y = 0x +5 ⇒ y = 5Green: y = -2x +1Blue: y = 2x -1Yellow: y = -1/2x -1__
Additional comment
The slope-intercept form of the equation is not the only possible way to write an equation for a line. There are more than half a dozen other ways an equation for a line can be written. Each will have its use.
Other forms include ...
ax +by = c . . . . . . . standard form
ax +by -c = 0 . . . . . general form
x/a +y/b = 1 . . . . . . . intercept form
y -k = m(x -h) . . . . . point-slope form
Intercept forms don't work well when one of the intercepts is missing. For the red line, the x-intercept is missing. Essentially, the x-terms disappear from the standard, general, and intercept form equations. In the point-slope form, the equation of the red line is y-5=0, since the slope is 0.
Cylinder M and cylinder N are similar. The radius of cylinder N is equal to its height, and the ratio of the height of cylinder N to the height of cylinder M is 5: 3. The surface area of cylinder N is 256 square feet greater than the surface area of cylinder M. Find the surface area of each cylinder.
The surface area of cylinder M is approximately 131.95 square feet and the surface area of cylinder N is approximately 319.77 square feet.
What is a cylinder?
A cylinder is a three-dimensional geometric shape that consists of two congruent parallel bases in the shape of circles or ellipses, and a curved surface that connects the bases. The height of a cylinder is the perpendicular distance between the bases. A cylinder is a type of prism, and it can be classified as either a right cylinder or an oblique cylinder depending on whether or not its axis is perpendicular to its bases. Right cylinders have circular bases and their axis is perpendicular to the bases, while oblique cylinders have elliptical bases and their axis is not perpendicular to the bases.
Now,
Let the radius of cylinder M be r and its height be h. Then, the radius and height of cylinder N are both 2r, since the radius is equal to the height.
Since the cylinders are similar, their dimensions are proportional, which means:
(height of N) / (height of M) = 5/3
(radius of N) / (radius of M) = (2r) / r = 2
Using the formula for the surface area of a cylinder, we can write:
Surface area of cylinder M: 2πr² + 2πrh
Surface area of cylinder N: 2π(2r)² + 2π(2r)(5/3)h
We are told that the surface area of cylinder N is 256 square feet greater than the surface area of cylinder M. So we can set up the equation:
2π(2r)² + 2π(2r)(5/3)h = 2πr² + 2πrh + 256
Simplifying and solving for h, we get:
4r² + 20rh/3 = r² + rh + 128
3r² - rh - 128 = 0
(3r + 32)(r - 4) = 0
Since the height of the cylinder cannot be negative, we take the positive solution r = 4. Then, the height of cylinder M is (3/5)(4) = 12/5, and the height of cylinder N is 2(4) = 8.
Using the formulas for surface area, we can find the surface areas of both cylinders:
Surface area of cylinder M: 2π(4)² + 2π(4)(12/5) = 131.95 square feet
Surface area of cylinder N: 2π(2(4))² + 2π(2(4))(8) = 319.77 square feet
Therefore, the surface area of cylinder M is approximately 131.95 square feet and the surface area of cylinder N is approximately 319.77 square feet.
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a single card is drawn at random from a standard 52-card deck work out the full in their simplest form. P(heart)
P(not heart)
Answer:
Total Number of possible outcomes = 52
Getting a jack from a deck of 52 cards for a certain event (A) = 4
The Probability (A) = 4/ 52
= 1 / 13 = 0.07
Step-by-step explanation:
this isn't my answer but hope it helps.
can’t find the answer anywhere, pls help
Answer:
Answer is
11
I'm just now learning
11 is the answer dear friend
Helppppppppppppppppppp
Answer:
Step-by-step explanation: Second one but I'm not sure so wait till someone else answers if they don't then just guess or pick the second one but if it's wrong I'm extremely sorry .!
Answer:
option forth is mistake:
<DEB and <CBE are not corresponding angle. they are co interior angle.
what is the distance between 1/3 and 1/2
Answer:
1
Step-by-step explanation:
help fast please.........................
The type of angle in which angle 3 and angle 6 are, is that they are alternate interior angles ( option C)
What are angles on parallel lines?Angles in parallel lines are angles that are created when two parallel lines are intersected by another line called a transversal.
Since line c and line b are parallel to each other and line a is the transversal that cut through both of them the angle on line a and line b will have the following characteristics;
They can be;
supplementary
alternate exterior
alternate interior
vertically opposite
and corresponding
The property between angle 3 and angle 6 is that they are alternate interior to each other.
Therefore angle 3 and angle 6 are alternate interior angles.
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1. What is the slope of the line through the points (-4, 2) and (—16,-6) PLEASE HELP
Answer:
2/3
(-4, 2) and (-16, -6)
slope = m = (y2 - y1) / (x2 - x1) = (-6 - 2) / (-16 - -4) = -8 / -12 = 2 / 3 = 0.667
I hope you got it right :)
(a) Show that if λ is an eigenvalue of A, then λ is an eigenvalue of \(A^{T}\). Show with an example that the eigenvectors of A and \(A^{T}\) are not the same.
(b) Show that if λ is an eigenvalue of A, and A is invertible, then λ^-1 is an eigenvalue of A^-1.
If λ is an eigenvalue of A, then λ is an eigenvalue of \(A^T\). Show with an example that the eigenvectors of A and \(A^T\) are not the same.
What are eigenvalues and eigenvectors?The equation Av = λv, where v is a non-zero vector, is satisfied by an eigenvector v and an eigenvalue given a square matrix A. In other words, the eigenvector v is multiplied by the matrix A to produce a scalar multiple of v. Due to their role in illuminating the behaviour of linear transformations and differential equation systems, eigenvectors play a crucial role in many branches of mathematics and science. When the eigenvector v is multiplied by A, the eigenvalue indicates how much it is scaled.
The eigenvalue and eigenvector states that, let v be a non-zero eigenvector of A corresponding to the eigenvalue λ.
Then, we have:
Av = λv
Taking transpose on both sides we have:
\(v^T A^T = \lambda v^T\)
The above equations thus relates transpose of vector and transpose of A to λ.
Now, consider a matrix:
\(\left[\begin{array}{cc}1&2\\3&4\\\end{array}\right]\)
Now, the eigen values of this matrix are λ1 = -0.37 and λ2 = 5.37.
The eigenvectors are:
\(v1 = [-0.8246, 0.5658]^T\\v2 = [-0.4159, -0.9094]^T\)
Now, for transpose of A:
\(A^T=\left[\begin{array}{cc}1&3\\2&4\\\end{array}\right]\)
The eigen vectors are:
\(u1 = [-0.7071, -0.7071]^T\\u2 = [0.8944, -0.4472]^T\)
Hence, we see that, if λ is an eigenvalue of A, then λ is an eigenvalue of \(A^T\). Show with an example that the eigenvectors of A and \(A^T\) are not the same.
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