Answer:
Third choice.
The right correspondence is [tex]\angle CDB \cong \angle ECD[/tex]
Step-by-step explanation:
The third choice is not true, that is
[tex]\angle CDB[/tex] NOT corresponds to [tex]\angle ECD[/tex]
If [tex]\triangle CBD \sim \triangle CDE[/tex], then corresponding sides are proportional, and corresponding angles are congruent. The corresponding angle of [tex]\angle CDB[/tex] is
[tex]\angle CDB \cong \angle ECD[/tex]
Therefore, the third option shows a wrong correspondence, that's the right choice in this case, because it doesn't express a valid correspondence.
Between which X-values and y-values does the cluster in this scatter plot Lie 30 POINTS
The green circle shows the cluster. This is where most of the data tends to stay. The smallest x-value is 4 (shown by the vertical pink line) and the largest x-value is 6 (shown by the vertical blue line). As for the y-value: the smallest is shown by the horizontal pink line at 6 and the largest is 9 shown by the horizontal blue line. This means the answer is C.
Hope this helped :)
What are the vertex and x-intercepts of the graph of the function below?
y=x^2-6x-7
A. Vertex: (3, -16); Intercepts: x= -1, 7
B. Vertex: (3, -2); Intercepts: x= 1, -7
C. Vertex: (3, -2); Intercepts: x= -1, 7
D. Vertex: (3, -16); Intercepts: x= 1, -7
Answer: 3,-16 x=-1,7
Step-by-step explanation:
Please help! The figure is a rhombus, and I am trying to find the measure of angle ADB
Answer:
86 - 9x
Step-by-step explanation:
In a rhombus, adjacent angles are supplementary. So:
∠ADE + ∠EDC + ∠DCE + ∠ECB = 180
Also, the diagonals of a rhombus are perpendicular. Since the sum of a triangle's angles add up to 180:
∠EDC + 90 + ∠DCE = 180
∠EDC + ∠DCE = 90
Substituting:
∠ADE + 90 + ∠ECB = 180
∠ADE + ∠ECB = 90
∠ADE + 9x + 4 = 90
∠ADE = 86 - 9x
∠ADB is the same as ∠ADE, so the answer is 86 - 9x.
Angle ∠ADB is 41°.
RhombusIt is a polygon that has four sides and four corners. The sum of the internal angle is 360 degrees. In Rhombus opposite sides are parallel and all sides are equal. And its diagonals intersect at the right-angle.
Given
A rhombus ABCD,
∠DCA = 13x - 16
∠ACB = 9x + 4
To findThe measure of ∠ADB.
How to get the measure of ∠ADB?We know that the angle ∠DCA and ∠ACB are equal.
13x - 16 = 9x + 4
13x - 9x = 4 + 16
4x = 20
x = 5
So the angle ∠DCA and ∠ACB will be
∠DCA = 13x - 16 = 64 - 16 = 49
∠ACB = 9x + 4 = 45 + 4 = 49
The sum of the internal angle is 360 degrees
∠ABC + ∠BCD + ∠CDA + ∠DAB = 360
∠CDA + ∠BCD + ∠CDA + ∠BCD = 360
∠ABC + ∠BCD = 180
∠CDA + 98 = 180
∠CDA = 82
So we know
2 x ∠ADB = ∠CDA
2 x ∠ADB = 82
∠ADB = 41
Thus, Angle ∠ADB is 41°.
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10 points for correct answer
Answer:
[tex]y=\frac{1}{52}x^2[/tex]
Step-by-step explanation:
The focus of the parabola is (0,13)
and the directrix is y=-13.
The equation of this parabola is given by:
[tex]x^2=4py[/tex]
The vertex of this parabola is at the origin.
The value of p is the distance from the vertex to the focus.
p=13-0=13
The equation of the parabola is
[tex]x^2=4(13)y[/tex]
[tex]x^2=52y[/tex]
Or
[tex]y=\frac{1}{52}x^2[/tex]
which of the following is a zero from the function f(x)=(x+3)(x-7)(x+5)? X=-7, X=-3, X=3, X=5
Answer:
x = - 3
Step-by-step explanation:
To find the zeros set f(x) = 0, that is
(x + 3)(x - 7)(x + 5) = 0
Equate each factor to zero and solve for x
x + 3 = 0 ⇒ x = - 3
x - 7 = 0 ⇒ x = 7
x + 5 = 0 ⇒ x = - 5
Which is the graph of the equation
(X-1)^2/ 3^2 + y^/ 4^2 = 1 ?
Answer:
the answer is C
Step-by-step explanation:
The equation shows the third equation
What is Equation?Equations are mathematical statements containing two algebraic expressions on both sides of an 'equal to (=)' sign. It shows the relationship of equality between the expression written on the left side with the expression written on the right side. In every equation in math, we have, L.H.S = R.H.S (left hand side = right hand side). 6.9
Parts of an Equation
There are different parts of an equation which include coefficients, variables, operators, constants, terms, expressions, and an equal to sign. When we write an equation, it is mandatory to have an "=" sign, and terms on both sides. Both sides should be equal to each other. An equation doesn't need to have multiple terms on either of the sides, having variables, and operators. An equation can be formed without these as well, for example, 5 + 10 = 15. This is an arithmetic equation with no variables. As opposed to this, an equation with variables is an algebraic equation.
As, per the given equation
(X-1)^2/ 3^2 + y^/ 4^2 = 1
The graph which is well defined from this equation is graph (C).
As, shown below.
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How many possible 7 digit phone numbers can be created from the digits 0 through 9 if numbers cannot be repeated and the first number cannot equal 0?
A.181,440
B.544,320
C.604,800
D.10,000,000
Please select the best answer from the choices provided
A
B
C
D
The correct answer is C. 604,800.
To calculate this, we can use the formula for permutations:
P(n, k) = n! / (n-k)!
In this case, we have 9 digits (0-9), and we want to create a 7-digit phone number. Since the first digit cannot be 0, we have 9 choices for the first digit, and 9 remaining choices for each subsequent digit (since numbers cannot be repeated).
So, the total number of possible phone numbers is:
P(9, 7) = 9! / (9-7)! = 9 × 8 × 7 × 6 × 5 × 4 × 3 = 604,800
Therefore, the correct answer is C. 604,800.
what is the exact solutions of x^2-5x-1=0
For this case we must find the solutions of the following quadratic equation:
[tex]x ^ 2-5x-1 = 0[/tex]
We solve by means of
[tex]x = \frac {-b \pm \sqrt {b ^ 2-4 (a) (c)}} {2a}[/tex]
Where:
[tex]a = 1\\b = -5\\c = -1[/tex]
Substituting:
[tex]x = \frac {- (- 5) \pm \sqrt {(- 5) ^ 2-4 (1) (- 1)}} {2 (1)}\\x = \frac {5 \pm \sqrt {25 + 4}} {2}\\x = \frac {5\pm \sqrt {29}} {2}[/tex]
Finally, the roots are:
[tex]x_ {1} = \frac {5+ \sqrt {29}} {2}\\x_ {2} = \frac {5- \sqrt {29}} {2}[/tex]
Answer:
[tex]x_ {1} = \frac {5+ \sqrt {29}} {2}\\x_ {2} = \frac {5- \sqrt {29}} {2}[/tex]
A trinket factory can produce 3,000 trinkets per day. The warehouse has a capacity of 50,000 trinkets. Currently, there are 8,000 trinkets in the warehouse. Assume that no trinkets are going to be shipped out of the warehouse for a while.
1) Write an equation for the number of trinkets T in the warehouse after D days.
2) How many days will it take to fill the warehouse?
An equation for the number of trinkets in the warehouse after x days:
8,000 + 3,000x = 50,000
How many days will it take to fill the warehouse?
8,000 + 3,000x = 50,000
3,000x = 42,000
x = 14
Answer:
Per day production = 3000
The capacity of the warehouse = 50000
Current count of trinkets = 8000
Part 1:
Assuming that no trinkets are going to be shipped out,
The equation for the number of trinkets T in the warehouse after D days:
[tex]T=8000+3000D[/tex]
Part B:
We will put T=50000 in above equation.
[tex]50000=8000+3000D[/tex]
=> [tex]3000D=50000-8000[/tex]
=> [tex]3000D=42000[/tex]
D = 14
Hence, it will take 14 days to fill the warehouse.
standard form of the equation x^2 + 4y^2 = 4.
Answer:
This equation in standard for would be x^2/4 + y^2 = 1
Step-by-step explanation:
Which graph represents the function f(x) 2x-1/x-1 f(x) 2x-1/x-1
Answer:
See attached file
Step-by-step explanation:
ILL GIVE BRAINLIEST PLS HELP ME
When a system of equations appears on a graph, what are the characteristics of a system with one solution? No solution? Infinite solutions?
One solution
The two (or more) equations would only intersect once
No solution
Lines never intersect
The lines are parallel
Infinite solutions
The lines are the exact same
That’s all the characteristics I know
Multiply the quantity 5 less than 3 times a number by the quantity 2 times the same number added to five. Please show your work.
Answer:
[tex](3x-5)(2x+5)[/tex]
Step-by-step explanation:
Let
x ----> the number
we know that
The algebraic expression of the phrase "Multiply the quantity 5 less than 3 times a number by the quantity 2 times the same number added to five" is equal to
[tex](3x-5)(2x+5)\\ \\6x^{2}+15x-10x-25\\ \\6x^{2}+5x-25[/tex]
Plz help!!
The set of all points in a plane that are equidistant from a given point is called a ______. The given point is called ________.
Answer:
Circle and Center
Step-by-step explanation:
In geometry, the set of points equidistant from a given point in a plane is called a circle. The given point from which all points on the circle are equidistant is known as the center.
Explanation:The definition you're looking for pertains to the geometric concept of a circle. The set of all points in a plane that are equidistant from a particular point is called a circle. Meanwhile, the given point that is equidistant from all other points of the circle is called the center of the circle. So, in a two-dimensional plane, this center point and the constant distance (also known as the radius) from it to any point on the circle define a circle.
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Find the area of the rhombus.
Please need help
Answer:
96cm2
Step-by-step explanation:
Area of rhombus=1÷2×d1×d2
=1÷2×12×16
=96
96cm². The are of the rhombus of the image is 96cm².
The key to solve this exercise is breaking down the rhombus in four equals right triangles, each triangle has the sides 10cm, 8cm and 6cm. We can calculate the area of one right triangle and multiply by 4 in order to get the total area of the rhombus.
The area of a triangle is [tex]A_{t}=\frac{bxh}{2}[/tex] where b is the base and h is the height.
The base of the one right triangle is 8cm and the height is the leg adyacent to the right angle that is 6cm. Calculating the area of the right triangle:
[tex]A_{t}=\frac{8cmx6cm}{2}=\frac{48cm^{2} }{2} =24cm^{2}[/tex]
The total area of the rhombus is [tex]A = 4A_{t}[/tex]
[tex]A = 4x24cm^{2}=96cm^{2}[/tex]
The scores on a test are normally distributed with a mean of 110 and a standard deviation of 22. What is the score that is 3 standard deviations below the mean?
Answer:
Step-by-step explanation:
If the mean is 110, and the standard devaition is 22,
1 standard dev. below the mean is 110-22
2 standard dev below the mean is 110-22-22
3 standard dev below the mean is 110-22-22-22
Hope that helps!
The score that is 3 standard deviations below the mean will be 44.
What is the z-score?The z-score is a statistical evaluation of a value's correlation to the mean of a collection of values, expressed in terms of standard deviation.
The scores on a test are normally distributed with a mean of 110 and a standard deviation of 22.
Then the score that is 3 standard deviations below the mean will be
The first standard deviation below the mean will be
⇒ 110 - 22
⇒ 88
The second standard deviation below the mean will be
⇒ 110 - 22 - 22
⇒ 66
The third standard deviation below the mean will be
⇒ 110 - 22 - 22 - 22
⇒ 44
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F(x)=6x^2-x
Find f(-3)
Answer:
327
Step-by-step explanation:
You will plug in the -3 for x. 6 times -3 equals -18. -18 squared equals 324. 324 minus -3 equals 327.
Answer: [tex]f(-3)=57[/tex]
Step-by-step explanation:
Given the following function:
[tex]f(x)=6x^2-x[/tex]
To find [tex]f(-3)[/tex] you need to substitute the x value [tex]x=-3[/tex] into the function [tex]f(x)[/tex] given.
Therefore, when the input value (value of the variable "x") is -3, then the ouput value is:
[tex]x=-3\\\\f(-3)=6(-3)^2-(-3)[/tex]
Remember the multplication of signs:
[tex](+)(+)=+\\(-)(-)=+\\(-)(+)=-[/tex]
Then:
[tex]f(-3)=57[/tex]
A pet store sells puppies and kittens in the ratio 5 : 4.
If their sales of puppies and kittens combined came to 36, how many puppies did they sell?
I found it by random. You times the ratio by 4 to get 36 puppies and kittens combined.
If the puppies was 5 then 5 x 4 = 20 puppies in their sales.
If the puppies was 4 then 4 x 4 = 16 puppies in their sales.
I couldn't tell if the ratio was in the according order of puppies and then kittens or if that was just saying what the ratio was about.
Let us consider the ratio to be x
So, as per the question's statement, we can write it as;
[tex]5x+4x=36[/tex]
⇒[tex]9x=36[/tex]
We will divide 9 on both the sides, we get;
⇒[tex]x=\frac{36}{9}=4[/tex]
So, for getting the number of puppy sold we have to multiply it with 5, we get;
[tex]5x=5*4=20[/tex]
They have sold 20 puppies.
Hence, the answer is [tex]20[/tex] puppies.
How do you calculate a ratio?
Divide data A by data B to find your ratio. In the example above, 5/10 = 0.5. Multiply by 100 if you want a percentage. If you want your ratio as a percentage, multiply the answer by 100
How to simplify a ratio?Ratios can be fully simplified just like fractions. To simplify a ratio, divide all of the numbers in the ratio by the same number until they cannot be divided any more
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5. What is angel 8 use picture above
Answer:
Angle 8 = Angle 4
Step-by-step explanation:
Answer:
4. ∠3 and ∠5
5. 75°
Step-by-step explanation:
4. Same-side interior angles.
If you look at the figure, the INTERIOR angles are those between the two parallel lines (JL and MP), these are angles #3, #4, #5 and #6. The other angles are exterior angles.
The question asks for same-side... meaning both on the left of NK or on the right side of it. So, the two sets that match this are: 3 with 5 and 4 with 6.
The last option gives you ∠3 and ∠5, so that's your answer.
That makes sense since angles 1 and 2, present in all other choices, are exterior angles.
5. If ∠4 = 75 degrees, what's the value of ∠8?
Since JL and MP are parallel lines crossed by another line (NK), we know that ∠4 and ∠8 will have the same measurement. Those two angles are located on the same position compared to each other and one of the parallel line.
So, since ∠3 = 75°, ∠8 also has to be 75°, same for their opposing angles 2 and 5. While the other angles are complements... so they're 105 degrees angles.
If you exert a force of 10.0 n to lift a box a distance of 0.75 m how much work do you do
A. 0.075 J
B. 7.5 J
C. 10.75 J
D. 75 J
Answer:
The work done is 7.5 Joules.
Step-by-step explanation:
Work Done is the product of the distance covered and the force applied.
[tex]WorkDone=Force\times Distance[/tex],
The force applied is 10.0N.
The distance covered is 0.75m.
This implies that:
[tex]WorkDone=10\times0.75[/tex],
[tex]WorkDone=7.5J[/tex].
The work done is 7.5 Joules.
Find the product. (-7p)^3
For this case we must resolve the following expression:
[tex](-7p) ^ 3[/tex]
So:
[tex](-7p) ^ 3 =\\(-7p) (- 7p) (- 7p) =[/tex]
By law of multiplication of signs we have:
[tex]- * - = +\\+ * - = -[/tex]
Also:
[tex]7 * 7 * 7 = 343\\p * p * p = p ^ 3[/tex]
Finally, we have that the expression is equivalent to:
[tex](-7p) ^ 3 = -343p ^ 3[/tex]
ANswer:
[tex]-343p ^ 3[/tex]
Suppose that you are driving and you come to an intersection where you can only turn in one of three directions....
Hello There!
The "Probability" of turning on the right road is 1/3 also known as a 33.3% chance. This would be unlikely
What can you say about the relationship between M and P? Which letter is the correct answer?
Answer:
Choice C is correct
Step-by-step explanation:
The first step is to re-write the equations in exponential form.
The first equation can be written as;
[tex]\frac{M}{N}=10^{4}[/tex] since the base is 10 and 4 the exponent.
The second equation can be written as;
[tex]\frac{P}{N}=10^{5}[/tex]
The second step is to make N the subject of the formula in both equations.
Solving for N from this equation [tex]\frac{M}{N}=10^{4}[/tex], yields;
[tex]N=\frac{M}{10^{4}}[/tex]
Solving for N from the second equation [tex]\frac{P}{N}=10^{5}[/tex], yields;
[tex]N=\frac{P}{10^{5}}[/tex]
Therefore;
[tex]\frac{M}{10^{4}}=\frac{P}{10^{5} }\\\\P=10M[/tex]
the plot in A - D all show ________ correlation.
A. negative
B. No
C. positive
D. prime
I think it's Answer C. but I'm not sure. please help and thank you
Answer:
C. Positive
Step-by-step explanation:
When x and y are both increasing, the slope of the line of best fit is positive, and so is the correlation. Hope this helps!
Answer
positive
Explanation
The answer is positive correlation, since all four of the graphs indicate the increase of all the variables.
It could not be negative correlation, because the line on graph would have more of a downward appearance.
Simplify 1+3+5+7+...199/2+4+6+8+...+200
Answer: Multiply 100 to both the numerator and denominator.
The problem is simplifying a sequence of numeric addition. It involves finding the average of a range of sequential odd and even numbers and dividing the two averages. This simplifies to 100/101.
Explanation:The problem presented is to simplify the sequential addition of odd numbers from 1 to 199, divided by the sequential addition of even numbers from 2 to 200. This is also known as calculating the average or mean of a set of sequential numbers, a concept in statistics.
To solve this, we need to understand that the average of a set of sequential numbers can be found by taking the sum of the first number and the last number, dividing it by two. Therefore, the sum of odd numbers from 1 to 199 can be simplified as (1+199)/2, and the sum of even numbers from 2 to 200 can be simplified as (2+200)/2.
Simplifying these gives us 100 for odd numbers and 101 for even numbers. Therefore, the simplification of the presented sequence is 100/101.
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ivan pays an $8 monthly service fee so he can rent movies for $1.50 each and games for 3.00 each. Last month, Ivan rented 6 movies and 5 games. Which expression and result show the total amount that Ivan spent last month on his movie and game rentals?
I think 24 dollars without the monthly fee
Answer:
Expression: 8 + m(1.5) + g(3)
Result: 32
Step-by-step explanation:
Let m represent the number of movies and g represent the number of games Ivan rent, then total amount he spent is
8 + m(1.5) + g(3)
Since he rented 6 movies and 5 games
→ 8 + 6(1.5) + 5(3)
→ 8 + 9 + 15
→ 32
What is the midpoint of OA
Answer should be A if I'm not wrong.
Answer:
Option A is the correct answer.
Step-by-step explanation:
Given
The coordinates of point A = (2m, 2n)
The diagram is plotted on the graph, where O represents origin.
As we know that O is the origin whose coordinates are (0,0)
The formula for mid-point is:
Mid-point=((x_1+x_2)/2,(y_1+y_2)/2)
So,
The x-coordinate of mid-point of OA=(2m+0)/2
=2m/2
=m
The y-cooridnate of mid-point of OA=(2n+0)/2
=2n/2
=n
So the mid-point of OA is (m,n) ..
The triangles in the image are similar.
Solve for x.
A) 7
B) 6
C) 10
D) 5
ANSWER
A) 7
EXPLANATION
The given triangles are similar
Hence the corresponding sides are in the same proportion.
[tex] \frac{3x + 4}{30} = \frac{30}{36} [/tex]
Simplify the right hand side:
[tex]\frac{3x + 4}{30} = \frac{5}{6}[/tex]
Cross multiply;
6(3x+4)=5×30
Expand
18x+24=180
18x=150-24
18x=126
[tex]x = \frac{126}{18} = 7[/tex]
Given the side lengths below, determine which triangle is not possible.
(A) 4, 5, 6
(B) 4, 3, 6
(C) 3, 4, 5
(D) 3, 3, 6
Answer:
(D) 3, 3, 6
Step-by-step explanation:
The triangle inequality says the sum of the shortest two legs must be longer than the longest. In the case of {3, 3, 6}, the sum is exactly equal to the longest, so the "triangle" will look like a line segment and have zero height and zero area,
Some authors describing the triangle inequality find that to be an acceptable condition. Apparently the author of this question does not.
A normal distribution has mean = 56.3 cm, and
84% of the data fall above 50.2 cm. Find the standard
deviation.
Answer:99.7 percent
Step-by-step explanation:
For a data set with a symmetric distribution , approximately 68.3 percent of the values will fall within one standard deviation from the mean, approximately 95.4 percent will fall within 2 standard deviations from the mean, and approximately 99.7 percent will fall within 3 standard deviations from the mean.