How many and what type of solutions does 5x2−2x+6 have?
1 rational solution
2 rational solutions
2 irrational solutions
2 nonreal solutions
Answer:
2 nonreal solutions
Step-by-step explanation:
given a quadratic equation in standard form
ax² + bx + c = 0 (a ≠ 0 )
then the nature of the roots are determined by the discriminant
b² - 4ac
• if b² - 4ac > 0 then 2 real and irrational solutions
• if b² - 4ac > 0 and a perfect square then 2 real and rational solutions
• if b² - 4ac = 0 then 2 real and equal solutions
• if b² - 4ac < 0 then no real solutions
5x² - 2x + 6 = 0 ← in standard form
with a = 5 , b = - 2 , c = 6
b² - 4ac
= (- 2)² - (4 × 5 × 6)
= 4 - 120
= - 116
since b² - 4ac < 0
then there are 2 nonreal solutions to the equation
What is the solution to the system of linear equations 6x 7y 594x 5y 41?
The solution of the system of linear equations is 6x + 7y = 594x + 5y = 41 is x = 4, y = 5.
A system of linear equations is a set of two or more equations with the same variables. To solve a system of linear equations, we can use different methods like substitution, elimination, or matrices.
To solve the system of linear equations:
6x + 7y = 59
4x + 5y = 41
One method is to use substitution. To use substitution, we can solve one of the equations for one of the variables and then substitute it into the other equation.
Solve the first equation for x:
6x + 7y = 59
x = (59 - 7y) / 6
Substitute this expression for x into the second equation:
4((59 - 7y) / 6) + 5y = 41
118/3 - 14y/3 + 5y = 41
y/3 = 5/3
Solve the equation for y:
y = 5
Now use the value of y to find x in the first equation
x = (59 - 7(5))/6
= (59 - 35)/6
= 4
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Solve the system of equations 2x + 2y = 6 and 2y - x = 12 using any method.
Answer:
Step-by-step explanation:
2x + 2y = 6
-2x + 4y = 24
6y = 30
y = 5
10 - x = 12
-x = 2
x = -2
(-2, 5)
The first 300 natural numbers are written in an ascending order of sequence. Now all the numbers at the odd places of this sequence are removed and, thus a new sequence is formed. From this new sequence, all the numbers at odd places are removed once again. This process continues till only one number remains at the end. What is this number?
The final number remaining in this sequence is the number 2.
We start with the first 300 natural numbers written in ascending order. We remove the numbers at odd places, which means we remove all the numbers at positions 1, 3, 5, and so on.
After the first removal, we are left with the numbers at even positions: 2, 4, 6, and so on.
Now, we repeat the process and remove the numbers at odd positions again. We remove numbers at positions 1, 3, 5, and so on from the remaining sequence.
After the second removal, we are left with the numbers at even positions again: 4, 8, 12, and so on.
We can observe that in each removal, the sequence reduces to half its size, and we are left with the numbers at even positions.
Continuing this process, we will eventually reach a point where we have only one number left.
Since we start with 300 numbers, after the first removal, we have 150 numbers. After the second removal, we have 75 numbers. After the third removal, we have 38 numbers. After the fourth removal, we have 19 numbers. After the fifth removal, we have 10 numbers. After the sixth removal, we have 5 numbers. After the seventh removal, we have 3 numbers. After the eighth removal, we have 2 numbers. Finally, after the ninth and last removal, we are left with a single number.
Therefore, the final number remaining in this sequence is the number 2.
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X(u,v)=(sqrt(1-u^2)cos(v), sqrt(1-u^2)sin(v), u), -1
Show that this is a coordinate patch and find the map of X.
X(u, v) = (sqrt(1-u^2)cos(v), sqrt(1-u^2)sin(v), u) is indeed a coordinate patch, satisfying both conditions.
To show that X(u, v) = (sqrt(1-u^2)cos(v), sqrt(1-u^2)sin(v), u) is a coordinate patch, we need to verify two conditions:
X is a differentiable map.
The Jacobian matrix of X has rank 2 everywhere on the domain.
Let's analyze each condition:
X is a differentiable map:
The components of X are composed of elementary functions (square root, cosine, sine, and linear functions), which are all differentiable. Therefore, X is a differentiable map.
Jacobian matrix:
The Jacobian matrix of X is given by:
J = [ ∂x/∂u ∂x/∂v ]
[ ∂y/∂u ∂y/∂v ]
[ ∂z/∂u ∂z/∂v ]
Taking the partial derivatives, we have:
∂x/∂u = (-u/sqrt(1-u^2))cos(v)
∂x/∂v = -sqrt(1-u^2)sin(v)
∂y/∂u = (-u/sqrt(1-u^2))sin(v)
∂y/∂v = sqrt(1-u^2)cos(v)
∂z/∂u = 1
∂z/∂v = 0
The Jacobian matrix becomes:
J = [ (-u/sqrt(1-u^2))cos(v) -sqrt(1-u^2)sin(v) ]
[ (-u/sqrt(1-u^2))sin(v) sqrt(1-u^2)cos(v) ]
[ 1 0 ]
To determine the rank of the Jacobian matrix, we can perform row operations to simplify it:
R2 = R2 + R1(sin(v)/cos(v))
R1 = R1(cos(v))
After simplification, we have:
J = [ -u 0 ]
[ -u 0 ]
[ 1 0 ]
The rank of the Jacobian matrix is 2, which implies that it has full rank everywhere on the domain.
Therefore, X(u, v) = (sqrt(1-u^2)cos(v), sqrt(1-u^2)sin(v), u) is indeed a coordinate patch, satisfying both conditions.
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a basketball player claims to make 47% of her shots from the field. we want to simulate the player taking sets of 10 shots, assuming that her claim is true. a total of 25 repetitions of a simulation were performed. the number of makes in each set of 10 simulated shots was recorded on the dotplot as shown below. suppose this player attempts 10 shots in a game and makes only 3 of them. does this provide convincing evidence that she is less than a 47% shooter?
Since the probability is 33% which is less than 47% as claimed by the basketball player, it can be concluded that there is convincing evidence that she is less than a 47% shooter.
It is given to us that -
A basketball player claims to make 47% of her shots from the field
The player takes sets of 10 shots
Assuming that her claim is true, a total of 25 repetitions of a simulation were performed
The number of makes in each set of 10 simulated shots was recorded on the dot plot
We have to suppose this player attempts 10 shots in a game and makes only 3 of them.
For the simulation of the player taking sets of 10 shots, we have to determine if we have enough convincing evidence that she is less than a 47% shooter.
From the given information, the approximate probability of finding out that a 47% shooter makes only 3 of the 10 attempted shots can be determined as -
P (x = 3) = 3/10 = 0.33 = 33%
Since the probability is 33% which is less than 47% as claimed by the basketball player, it can be concluded that there is convincing evidence that she is less than a 47% shooter.
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If f x = 7x
2 − 4x − 10, then f −3 =?
Answer:
f(x)=xy3 -4xy2 -7x+10
Step-by-step explanation:
the xy3 and xy2 means x to the 3rd power and x to the second power
9 - 36 + 5c + 4a
Plzz help
Answer:
37
Step-by-step explanation:
Make has 12 guavas he want to share his guavas with her 3 younger sister equally. how many guavas does each dame have
Pls. Help find these answers?!
Answer:
12
Step-by-step explanation:
Answer:
1) 12 boxes
2) 3, 6, 12
3) 12
4) 110 degrees
Step-by-step explanation:
1) Count the rectangles. Multiply the length of the rectangle in boxes to the width of rectangle in boxes.
Length: 4 boxes
Width: 3 boxes
4 x 3 = 12
12 boxes
2)
10% of 30 is 0.1 times 30.
0.1 x 30 = 30/10 = 3
20% of 30 is 0.2 times 20.
0.2 x 30 = 30/5 = 6
40% of 30 is 0.4 times 20.
0.4 x 30 = 30/2.5 = 12
3) Count the cubes. Reminder there are 2 boxes you cannot see.
Top Layer: 2
Middle Layer: 4
Back Bottom Layer: 4
Front Bottom Layer: 2
2 + 4 + 4 + 2 = 12
4) I cannot see the semicircle clearly, but I do know that a circle is 360 degrees. A semicircle, half of a circle, is 180 degrees.
180/18 (The angle of each section)
10
11 Sections
10 x 11 = 110
GIVING BRAINLIEST AND 50 POINTS
Answer:
2x + 2
Step-by-step explanation:
Combine all the like terms:
-5x + 7x -12 + 14 = 2x + 2
Answer:
2x + 2
Step-by-step explanation:
(- 5x - 12) + (14 + 7x) ← remove parenthesis
= - 5x - 12 + 14 + 7x ← collect like terms
= (- 5x + 7x) + (- 12 + 14)
= 2x + 2
Michael buy a baket of mangoe on ale for \$ 4$4 before tax.
The ale tax i 12%.
What i the total price Michael pay for the baket of mangoe?
Total price paid by Michael for the basket of mangoes is $4.48.
For the calculation of total price, price of sales tax will be added with selling price. Forming the equation -
Total price = 4 + 12%×4
Calculating the percentage of sales tax on Right Hand Side of the equation
Total price = 4 + 12×4/100
Solving the percentage part on Right Hand Side of the equation
Total price = 4 + 0.48
Performing addition on Right Hand Side of the equation
Total price = $4.48
Hence, Michael has to pay $4.48 after addition of sales tax for the basket of mangoes.
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Learn more
2. The function ln(x)2 is increasing. If we wish to estimate √ In (2) In(x) dx to within an accuracy of .01 using upper and lower sums for a uniform partition of the interval [1, e], so that S- S < 0.01, into how many subintervals must we partition [1, e]? (You may use the approximation e≈ 2.718.)
To estimate the integral √(ln(2)) ln(x) dx within an accuracy of 0.01 using upper and lower sums for a uniform partition of the interval [1, e], we need to divide the interval into at least n subintervals. The answer is obtained by finding the minimum value of n that satisfies the given accuracy condition.
We start by determining the interval [1, e], where e is approximately 2.718. The function ln(x)^2 is increasing, meaning that its values increase as x increases. To estimate the integral, we use upper and lower sums with a uniform partition. In this case, the width of each subinterval is (e - 1)/n, where n is the number of subintervals.
To find the minimum value of n that ensures the accuracy condition S - S < 0.01, we need to evaluate the difference between the upper sum (S) and the lower sum (S) for the given partition. The upper sum is the sum of the maximum values of the function within each subinterval, while the lower sum is the sum of the minimum values.
Since ln(x)^2 is increasing, the maximum value of ln(x)^2 within each subinterval occurs at the right endpoint. Therefore, the upper sum can be calculated as the sum of ln(e)^2, ln(e - (e - 1)/n)^2, ln(e - 2(e - 1)/n)^2, and so on, up to ln(e - (n - 1)(e - 1)/n)^2.
Similarly, the minimum value of ln(x)^2 within each subinterval occurs at the left endpoint. Therefore, the lower sum can be calculated as the sum of ln(1)^2, ln(1 + (e - 1)/n)^2, ln(1 + 2(e - 1)/n)^2, and so on, up to ln(1 + (n - 1)(e - 1)/n)^2.
We need to find the minimum value of n such that the difference between the upper sum and the lower sum is less than 0.01. This can be done by iteratively increasing the value of n until the condition is satisfied. Once the minimum value of n is determined, we have the required number of subintervals for the given accuracy.
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Please help!!! I will mark Brainliest
Answer:
it would be A
Step-by-step explanation:
Suppose that 18 inches of wire costs 90 cents.
At the same rate, how many inches of wire can be bought for 75 cents?
Answer:
15 inches
Step-by-step explanation:
18/90= price for 18 inches.
To get to 75 cents, we have to make the top equal to 1. We can do this by dividing the numerator and denominator by 18. That leaves us with 1/5.
Now, we can multiply the top and bottom by 15. This is because 5 x 15= 75.
What you do to the bottom of the fraction you also do to the top. This leaves us with the answer: 15/75. That means you can buy 15 inches of wire for 75 cents.
if the length of a rectangle is increased by 30 percentage and the width of the same rectangle is decreased by 30 what is the affect on the area
Answer:
The area will decrease by 9%.
Step-by-step explanation:
The area of a rectange is given by the formula below.
\(\boxed{\text{Area of rectangle}= \text{length}×\text{width}}\)
Let the original length and width of the rectangle be L and W respectively.
Start by finding the original area:
Original dimensions
Length= L= 100%L
Width= W= 100%W
Original area= LW
Let's find the dimensions of the new rectangle in terms of L and W.
New dimensions
Length= (100% +30%)L= 130%L
Width= (100%-30%)W= 70%W
New area
\( = \frac{130}{100} L \times \frac{70}{100} W\)
\( = \frac{91}{100} LW\)
= 91% LW
Comparing the new area with the original area:
100% LW- 91% LW= 9% LW
∴ The area will decrease by 9%.
*Note that percentage is equivalent to dividing a number by 100.
Item 5
Emily drew a scale drawing to represent her bedroom. The drawing is rectangular. The longer sides measure 42.5 centimeters and the shorter sides measure 35.5 centimeters.
Emily decides she wants the drawing to be smaller. She will reduce it by a scale factor of 12.
What will be the measure of the shorter sides?
Select from the drop-down menu to correctly complete the statement.
The measure of the shorter sides will be
Choose...
a.) 17.75
b.) 19.5
c.) 21.25
Answer:
the answer is 17.75
Step-by-step explanation:
Answer:
17.75
Step-by-step explanation:
i took the test
a rhombus has one diagonal with length 12 cm and area of 48 square cm. what is the length of the other diagonal?
OMG HELP ME ASAP DUE SOON WILL GET BRAINLIEST
1) 4 consecutive integer numbers add to 2. what are the numbers
2)three consecutive even integers add to -6 what are these integers?
Step-by-step explanation:
consecutive numbers follow each other thus if the first is x the second will be x+1 e.t.c:
1. x+x+1+x+2+x+3=2
x+x+x+x+1+2+3=2
4x=2-6
4x= -4
x= -1
The numbers are -1, 0, 1 and 2
2.x+x+1+x+2= -6
3x+3=-6
3x= -6-3
3x= -9
x=-3
The numbers are -3,-2 and -1
Find the area. Answer ASAP pls pls
Answer:
This is your answer ☺️
write an integral (in any coordinate system of your choos- ing) representing the volume of the solid that the cylinder, with base r
To find the integral representing the volume of the solid that the cylinder with base r, we can use cylindrical coordinates. The volume of the cylinder is given by the formula V = πr^2h, where r is the radius of the base and h is the height.
Using cylindrical coordinates, the solid can be represented as the region bounded by the planes z=0, z=h, and the cylinder \(x^2+y^2=r^2\). The integral to find the volume of this solid is then given by the triple integral over the region in cylindrical coordinates, i.e., ∭E r dr dθ dz
where E is the region bounded by the planes z=0, z=h, and the cylinder \(x^2+y^2=r^2\), and the limits of integration are r=0 to r=r, θ=0 to 2π, and z=0 to h. In this integral, the integrand is simply r, which represents the infinitesimal volume of the solid element at each point in the region E. Integrating this over the entire region E gives the total volume of the solid.
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y=-2x + 2 make a table of values
Answer:
Step-by-step explanation:
The negative sign in y = -2x + 2 tells us immediately that the y intercept of the graph of this function is (0, 2). If we start at (0, 2) and increase x by multiples of 1, y decreases by 2 in each case (the slope of this line is -2). Thus, we begin a table as follows:
x y = -2x + 2
0 2
1 -2(1) + 2 = 0
2 -2(2) + 2 = -4 + 2 = -2
and so on:
x y = -2x + 2
0 2
1 0
2 -2
3 -4
4 -6
Alright, Since my previous questions have not been answered, here's 50p to whoever solves this
Two times x is 16 more than y. The sum of x and two times y is 18.
find the value of y.
Step-by-step explanation:
We can make 2 equations as follows:
2x = y + 16 and x + 2y = 18
x + 2y = 18 is the same as x = 18 - 2y. Hence, 2(18 - 2y) = 2x = y + 16.
2(18 - 2y) = y + 16
36 - 4y = y + 16
5y = 20
y = 4.
Graph this line using the slope and y-intercept: y= – 7x–3 Click to select points on the graph.
The slope of the line is -7 and the y-intercept is negative 3. The line is drawn below.
How to draw the graph of the function?The collection includes all locations on the surface of the shape (x, f(x)) that make up a function of f's graph. We may alternatively say that the graph of f is the curve of y = f. (x). As a result, the diagram of an equation is a particular instance of the graphs of functions.
A connection between a number of variables results in a linear model when a graph is displayed. The variable will have a degree of one.
The linear equation is given as,
y = mx + c
Where m is the slope of the line and c is the y-intercept of the line.
The equation is given below.
y = -7x - 3
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Is 4 10/5, equivalent to 6?YesNo
The expression 4 10/5 is the same as 4 + 10/5. It has a whole part (4) and a fraction part (10/5).
To find out if this expression is equivalent to 6, we need to simplify the fraction part:
\(\frac{10}{5}=10\div5=2\)We can simplify the fraction part in a whole number (2), so we have that:
\(4\frac{10}{5}=4+\frac{10}{5}=4+2=6\)So the answer is Yes, 4 10/5 is equivalent to 6.
a 6 foot tall man walks at a rate of 10 ft per second away from a light that is 15 ft above the ground. when he is 13 ft from the base of the light, at what rate is the tip of his shadow changing
When a 6-foot tall man walks at a rate of 10 ft per second away from a light that is 15 ft above the ground. when he is 13 ft from the base of the light, the rate at which the tip of his shadow changing is 16.66 ft/s
Given, that the height of a man = is 6 feet
Height of the light = 15 feet
Rate of walk by man, dx/dt = 10 feet per second.
Here, in this question, we have to find out the rate at which the tip of his shadow is moving when the man is 13 feet from the base of the light.
By using the ratio of similar triangles we find that
⇒15/y = 6/(y - x)
⇒15(y - x) = 6y
⇒15y - 15x = 6y
⇒15y - 6y = 15x
⇒9y = 15x
Now dividing both sides 3 we will get
3y = 5x
Differentiating both sides with respect to t, we get
3(dy/dt) = 5(dx/dt)
⇒dy/dt = (5/3)(dx/dt)
⇒dy/dt = (5/3)(10)
⇒dy/dt = 50/3
⇒dy/dt = 16.66 ft/s
Therefore the rate at which the tip of his shadow will change when he is walking at a rate of 10ft/s is 16.66ft/s
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Can anyone help me on this question? Plese asap
In the floor plan of an executive's beach house above, the north and south walls of the living room are parallel. What is the floor area, in square feet, of the bedroom
The floor area of the bedroom is equal to: 3. 225√3 square feet.
How to calculate the area of a triangle?In Mathematics and Geometry, the area of a triangle can be calculated by using the following mathematical equation (formula):
Area of triangle = 1/2 × b × h
Where:
b represent the base area.h represent the height.Since line segment EF is parallel to line segment BC, we can logically deduce that the corresponding angles of triangles AEF and ABC would be congruent (equal). Therefore, we have the following proportional sides;
AE/ AB = A-F/FC
30/(30 + 30) = x/(x + 15)
x = 15
Length AC = x + 15
Length AC = 15 + 15
Length AC = 30 feet.
Now, we can determine the floor area of the bedroom in square feet as follows:
Floor area of the bedroom = Area of triangle ACD
Floor area of the bedroom = √3/4 × 30²
Floor area of the bedroom = √3/4 × 900
Floor area of the bedroom = 225√3 square feet.
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Missing information:
The question is incomplete and the complete question is shown in the attached picture.
The cube root shown has been written as a product where one of the factors is a perfect cube.
a =?
b=?
Answer:
a=3 b=6
Step-by-step explanation:
I just answered that question correctly on Edgeunity.
Answer:
3, 6. just answered it and got it right.
Step-by-step explanation:
what happens if you add a small imperfection to a system that has saddle-node bifurcation?
If you add a small imperfection to a system that has saddle-node bifurcation, the system will experience a phenomenon known as "imperfect bifurcation."
This means that the bifurcation will not occur at a single, well-defined point, but rather over a range of parameter values. This can lead to a change in the dynamics of the system, such as the appearance of new attractors or the disappearance of existing ones. In general, imperfect bifurcation can make the behavior of a system more complex and difficult to predict.
Moreover, the specific effect of the imperfection will depend on its size, location, and nature, and can vary between different types of saddle-node bifurcations, such as fold or transcritical bifurcations. Therefore, the analysis of imperfect bifurcation requires a detailed understanding of the system's dynamics and the effects of perturbations.
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