Answer:
see explanation
Step-by-step explanation:
The value of the discriminant determines the nature of the roots
• If b² - 4ac > 0 then roots are real and distinct
• If b² - 4ac = 0 then roots are real and equal
• If b² - 4ac < 0 then roots are not real
Here b² - 4ac = 4 > 0
Hence roots are real and distinct
Find the area of a regular
polygon with 7 sides, an apothem
of 8 meters and a side length of
7.7 meters. Round to the nearest
tenth.
Answer:
215.6 m²
Step-by-step explanation:
The area (A) of a regular polygon is
A = [tex]\frac{1}{2}[/tex] perimeter × apothem
perimeter = 7 × 7.7 = 53.9 m, hence
A = 0.5 × 53.9 × 8 = 215.6 m²
Answer:
215.6 meters squared
Step-by-step explanation:
Explain how to write an equation that represents this scenario
Answer:
1 ticket equals to $2.50. Since x number of tickets are sold, the total amount raised will be $2.50 multiply by x, which is 2.5x. Since y represents the total amount of money raised, 2.5x equals to y
if a polynomial function f(x) has roots 0,4,and 3+ √11,what must also be a root of f(x) 3+i√11
Answer:
3 - [tex]\sqrt{11}[/tex]
Step-by-step explanation:
Radical roots occur in conjugate pairs.
3 + [tex]\sqrt{11}[/tex] is a root then so is 3 - [tex]\sqrt{11}[/tex]
Answer:
[tex]3-\sqrt{11}[/tex]
Step-by-step explanation:
The function [tex]f(x)[/tex] has a grade of 4, becaus it has 4 roots.
Now, if one of its roots is [tex]3+\sqrt{11}[/tex], it means there fourth is [tex]3-\sqrt{11}[/tex], because square roots have two results, one positive and one negative.
So, the function cannot have a positive square root solution and not have a negative root solution.
Therefore, the right answer is [tex]3-\sqrt{11}[/tex].
What are the solutions for x when y is equal to 0 in the following quadratic
function?
y = x ^+ 6x +12
OA) X = 3 or x = 4
OB) x= -3 or x = 4
OC) x= 3 or x = 4
OD) x= -3 or x = 4
O E) no solution
Answer:
The correct answer option is E) No solution.
Step-by-step explanation:
We are given the following quadratic equation which we are to solve for x when the value of y is 0:
[tex]y = x ^2+ 6x +12[/tex]
[tex]x ^2+ 6x +12=0[/tex]
Using the quadratic formula since there are no factors:
[tex]x=\frac{-b \pm \sqrt{b^2-4ac }}{2a}[/tex]
Substituting the values in the formula to get:
[tex]x=\frac{-6 \pm \sqrt{6^2-4(1)(12) }}{2(1)}[/tex]
[tex]x=-3+\sqrt{3}i[/tex] or [tex]x=-3-\sqrt{3}i[/tex]
There are no real number solutions to this quadratic equation.
Does anyone know the solution and answer to this question please ??!
Answer:
C
Step-by-step explanation:
Given the similarity ratio, then the
linear ratio of sides = linear ratio of perimeters.
Hence
ratio of perimeters = [tex]\frac{9}{4}[/tex]
Two students were asked if they liked to read. Is this a good example of a statistical question? Why or why not?
Yes, this is a good statistical question because a variety of answers are given.
Yes, this is a good statistical question because there are not a variety of answers that could be given.
No, this is not a good statistical question because there are not a variety of answers that could be given.
No, this is not a good statistical question because there are a variety of answers that could be given. First gets brainiest
Answer:
Yes, this is a good statistical question because a variety of answers are given.
Step-by-step explanation:
A question can be called a good statistical question because of the variety of the answers it can bring to data. The answers to the same question will be different for different people.
Hence,
Yes, this is a good statistical question because a variety of answers are given ..
Answer:
C
Step-by-step explanation:
Did Unit Test Review B)
What is 70% of 30?
7
15
20
21
Answer:
D. 21
Step-by-step explanation:
Hope I helped!
Your answer is for this question is 21
1.) To find 70% percent of 30 you simply multiply both. To do that you gotta first change the percent into a decimal by moving the point two types to the left.
70 = 70.0
2.) As you can see we change the percent into a decimal.
70% = .70
3.) Now we can multiply 30 by .70 which will give us an answer of 21.
Hope this helps!!!
Please Mark as Brainliest!!!
first operation to solve 2x + 3 = 11
Answer:
subtract 3 from both sides
Step-by-step explanation:
Given
2x + 3 = 11 ( subtract 3 from both sides )
2x = 8 ( divide both sides by 2 )
x = 4
Which graph represents a line with a siope of
and a y-intercept equal to that of the line y= 2x-22
Answers are on the picture.
Please Help Me On This
Answer:
last choice
Step-by-step explanation:
So the y-intercept is -2 and the slope is -2/3
The only choices I'm going to look at is first and last because they go through -2 on y-axis.
Now -2/3 is the slope that means the graph should be going down reading it left to right so the last choice,
complete the table for the given rule. rule: y=2x
Answer:
x | y
-2| -4
-1 | -2
0 |0
1 | 2
2 | 4
Step-by-step explanation:
MARKING BRAINLIEST PLZ HURRY I CAN'T FLUNK!!!! :(
Match the equivalent expressions.
12 − 3y − 2x + x + 2x
3x + 2y − 2x + y + 12
x + 3y + 2x − 3x + 7 + 5
3y + 12
x − 3y + 12
5 + 2y + 7x − 4x + 3y − 17
4y + 3y + 3x − 6y − 10 − 2
3x + y − 12
x + 3y + 12
Answer:
Step-by-step explanation: The most important step to do is to simplify the equations down. We do this by finding common variables.
Common Variables are pairs such as 12x and 32x, and not 12x and 32y or 12 and 32.
1. [tex]12 -3y - 2x + x + 2x = 12 - 3y + x[/tex]
2. [tex]3x + 2y - 2x + y + 12 = 12 + 3y + x[/tex]
3. [tex]x + 3y + 2x - 3x + 7 + 5 = 12 + 3y[/tex]
4. [tex]12+ 3y[/tex] cannot be simplified any further.
5. [tex]12-3y+x[/tex] cannot be simplified any further.
6. [tex]5 + 2y + 7x - 4x + 3y - 17 = -12 + 5y + 3x[/tex]
7. [tex]4y + 3y + 3x - 6y - 10 - 2= -12+3x+y[/tex]
8. [tex]-12 + 3x + y[/tex] cannot be simplified any further.
9. [tex]12+ 3y + x[/tex] cannot be simplified any further.
Now, we start to match the equations.
Equation 1 is the same as Equation 5
Equation 2 is the same as Equation 9
Equation 3 is the same as Equation 4
Equation 6 is the same as none of them.
Equation 7 is the same as Equation 8.
And there you are have it!
50 points please with explanation
Answer:
no it is not a function
Step-by-step explanation:
it has no sequence and in order for a table to be a function it needs a sequence. look at X it goes from 1, 5, 7, then back down to 2 it has no correlation.
Answer:
no its not a function and ill explain why
Step-by-step explanation:
it has no sequenceand in order for a table to be a functionit needs a sequence. look at Xit goes from 1, 5, 7, then back down to 2 it has no correlation.
A circular spa has a 12 foot diameter and a constant depth of 3.5 feet. What is the water
volume of this spa?
volume of a circular spa : v = πr²h
v= 3.14 x 6 x 6 x 3.5 = 395.64
Measure the circular base to get the diameter.Divide the diameter by 2 to get the radius.Calculate the area with the formula: A = πr^2, where r is the radius.Measure the height of the cylinder.Multiply the area by the height to get the Volume.The volume of a cylinder is equal to the product of the area of the circular base and the height of the cylinder. The volume of a cylinder is measured in cubic units.
Calculate the area of the circular baseTo the formula for finding the area of a circle, A = πr2.[6] Just plug the radius you found into the equation. Here's how to do it:
A = π x 12
A = π x 1
A = π
Since π is normally rounded to 3.14, you can say that the area of the circular base is 3.14 in.2
To learn more about the volume of cylinder, refer
https://brainly.com/question/6204273
#SPJ2
The value of one of Kevin's baseball cards was $6.00 when he first got it. The value of this card now is $15.00. What is the percent increase in the value of the card?
Answer: %150
Step-by-step explanation:
Percent increase = New Value - original value/ original value * 100
15 - 6/6 * 100
9/6 * 100
1.5 * 100
150
Jayne is studying urban planning and finds that her town is decreasing in population by 3% each year. The population of her town is changing by a constant rate.True or False?
solve x - 3 = 7
3 - 3 = 7
x - 3 ___ = 7 ____
x ___ = ___
x = ___
Hi,
x - 3 = 7
x = 7 + 3
x = 10
Which of the following is the correct equation for this function?
A. y= (x+4)(x+2)
B. y=x^2+ 3x – 2
C. y+ 2 = – 2(x+3)^2
D. y+ 2 = 2(x+3)^2
The equation which is correct for the given function is:
D. [tex]y+2=2(x+3)^2[/tex]
Step-by-step explanation:By looking at the graph we observe that the graph of the function passes through the point (-4,0) , (-2,0) , (-3,-2)
A)
[tex]y=(x+4)(x+2)[/tex]
when x= -3 we have:
[tex]y=(-3+4)(-3+2)\\\\y=1\times (-1)\\\\y=-1\neq -2[/tex]
Hence, option: A is incorrect.
B)
[tex]y=x^2+3x-2[/tex]
when x= -2 we have:
[tex]y=(-2)^2+3\times (-2)-2\\\\y=4-6-2\\\\y=-4\neq 0[/tex]
Hence, option: B is incorrect.
C)
[tex]y+2=-2(x+3)^2[/tex]
when x= -2 we have:
[tex]y+2=-2(-2+3)^2\\\\y+2=-2[/tex]
[tex]y=-4\neq 0[/tex]
Hence, option: C is incorrect.
D)
[tex]y+2=2(x+3)^2[/tex]
We see that the graph of this equation matches the given graph of the function.
Answer:
D. y + 2 = 2(x+3)^2
Step-by-step explanation:
what is the 17th term in the arithmetic sequence in which a6 is 101 and a9 is 83
Answer:
35
Step-by-step explanation:
We know that the general formula for arithmetic sequence is
a_n=a_0+(n-1)d
Using the general formula, we can make equations for 6th term and 9th term
a_6=a_0+(6-1)d
a_6=a_0+5d
101=a_0+5d Eqn 1
For 9th term
a_9=a_0+(9-1)d
a_9=a_0+8d
83=a_0+5d Eqn 2
Subtracting equation 2 from equation 1
101-83=a_0+5d-(a_0+8d)
18=a_0+5d-a_0-8d
18=-3d
d= -6
Putting d=-6 in Eqn 1, we get:
101=a_0+5(-6)
101=a_0-30
a_0=101+30
a_0=131
Now that we have values of a_0, and d we can find the 17th term
a_17=a_0+(17-1)d
=131+(16)(-6)
=131-96
=35
So the 17th term is 35 ..
Two numbers have a sum of 24, and 7 times the first number minus the second number is equal to 16. What is the smaller number?
Answer:
Step-by-step explanation:
Let the first number = x
Let the second number = y
x + y = 24
7x - y = 16 Add these two equations
8x = 40 Divide by 8
8x/8 = 40/8
x = 5
The smaller number will be 5
================
5 + y = 24
y = 19
==================
Proof
7*5 - 19 = 16
35 - 19 = 16
CAN YOU PLEASE HEP ME WITH THIS ONE THIS IS TIMED PLEASE! Amy has 35 tiles of the same shape and size in a box. The colors of and amounts of the tiles are shown below:
12 red tiles
8 yellow tiles
15 pink tiles
Without looking in the box, Amy takes out a tile at random. She then replaces the tile and takes out another tile from the box. What is the probability that Amy takes out a yellow tile in both draws?
8 over 35 multiplied by 7 over 34 equal 56 over 1190
8 over 35 multiplied by 8 over 35 equal 64 over 1225
8 over 35 plus 7 over 34 equal 517 over 1190
8 over 35 plus 8 over 35 equal 560 over 1225
Answer:
B) 8 over 35 plus 8 over 35 equal 64 over 1225
Step-by-step explanation:
There are 8 yellow tiles out of 35 tiles.
Its not A because she replaces.
Its not C or D because you would only add when it says and
Answer:
8 over 35 multiplied by 8 over 35 equal 64 over 1225
Step-by-step explanation:
I got it right on my test. Give the other person brainliest.
The map below shows the location of 3 houses where you had to do lawn work today. Your truck gets 8 miles per gallon of gasoline, so you chose the shortest route from your house to the jobs and then back home, as shown below. If gas costs $1.52 per gallon, what was the total cost of the gas that you used today?
Answer:
$3.80
Step-by-step explanation:
We are given a graph showing the location of 3 houses where you had to do lawn work today, with the distances from your house.
Given that one truck gets 8 miles per gallon of gasoline and gas costs $1.52 per gallon, we are to find the total cost of the gas used.
Total distance = 7 + 3 + 4 + 6 = 20 miles
Gallons of gas used = 20 / 8 = 2.5
Total cost of gas used = 2.5 * 1.52 = $3.80
Can someone plz give me the answer for this question?
Answer:
see explanation
Step-by-step explanation:
Given
f(x) = [tex]e^{2x}[/tex] - 4
let f(x) = y
y = [tex]e^{2x}[/tex] - 4
Switch x and y and solve for y, that is
x = [tex]e^{2y}[/tex] - 4 ( add 4 to both sides )
x + 4 = [tex]e^{2y}[/tex]
Take the ln of both sides
ln(x + 4) = ln [tex]e^{2y}[/tex] = 2y [tex]ln_{e}[/tex] = 2y
Divide both sides by 2
y = [tex]\frac{ln(x+4)}{2}[/tex], that is
[tex]f^{-1}[/tex] (x) = [tex]\frac{ln(x+4)}{2}[/tex]
What is an imaginary number
Answer:
An imaginary number is a number that does not exist pretty much. It is usually written as "i", and, when squared = -1. However, you cannot root -1 to get a number, so i is the term that is given to be the answer.
Note:
i² = -1
~
2x^2+7x=15 write in standard then factor the left side of the equation.
Answer:
see explanation
Step-by-step explanation:
Given
2x² + 7x = 15 ( subtract 15 from both sides )
2x² + 7x - 15 = 0 ← in standard form
To factorise the left side
Consider the factors of the product of the coefficient of the x² term and the constant term which sum to give the coefficient of the x- term
product = 2 × - 15 = - 30 and sum = + 7
The factors are + 10 and - 3
Use these factors to split the x- term
2x² + 10x - 3x - 15 ( factor the first/second and third/fourth terms )
2x(x + 5) - 3(x + 5) ← factor out (x + 5) from each term
(x + 5)(2x - 3) ← in factored form
According to the Rational Root Theorem, the following are potential roots of f(x) = 6x4 + 5x3 - 33x2 – 12x + 20.
Which is an actual root of f(x)?
a) -5/2
b) -2
c) 1
d) 10/3
Answer:
a) -5/2.
Step-by-step explanation:
Try substituting (-5/2) into f(x):
6(-5/2)^4 + 5(-5/2)^3 - 33(-5/2)^2 - 12(-5/2) + 20
= 234.375 + -78.125 - 206.25 + 30 + 20
= 0.
So it is -5/2.
Answer:
a) [tex]x= -5/2[/tex]
Step-by-step explanation:
We substitute in the function the values given in the options to confirm whether they are roots or not
a) [tex]x= -5/2[/tex]
the function will be:
[tex]f(-\frac{5}{2} )=6(-\frac{5}{2} )^4 + 5(-\frac{5}{2} )^3-33(-\frac{5}{2} )^2-12(-\frac{5}{2})+20[/tex]
simplifying:
[tex]f(-\frac{5}{2} )=6(\frac{625}{16} )-5(\frac{125}{8} )-33(\frac{25}{4} )+30+20[/tex]
[tex]f(-\frac{5}{2} )=234.375-78.125-206.25+50\\f(-\frac{5}{2} )=0\\\\[/tex]
since the function when [tex]x= -5/2[/tex] is equal to zero, this is an actual root of f(x).
camille purchased 4.2 pounds of gummy worms for $1.75 per pound and 3.6 pounds of jelly beans for $2.25 per pound. how much did she spend for the candy? F. $15.45. G. $14.45. H. $15.25. I. $14.35.
Answer:
$15.45 (Answer F)
Step-by-step explanation:
Total expenditure was ($1.75/lb)(4.2 lb) + ($2.25/lb)(3.6 lb) = $15.45
Which set of numbers can represent the side lengths, in centimeters, of a right triangle?
8 12, 15
10, 24, 26
12, 20, 25
15.18 20
HURRY can a triangle can be constructed with angles measuring 115°,55°, and 20°? yes or no
Answer:
no
Step-by-step explanation:
The sum of the angles of a triangle must add to 180 degrees
115+55+20 = 190
This is not equal to 180 so it is not a triangle.
Answer:
No
Step-by-step explanation:
115°,55°, and 20° = 190° degrees and a triangle can only be 180° .
If m∠A = (3x-6)° and m∠B = (x + 9)°, find the m∠D.
A) 32°
B) 39°
C) 41°
D) 49°
E) None of the above
Because line BD goes through the center of the circle Angle A is a right angle which equals 90 degrees.
Set the equation for A to equal 90 and solve for x:
3x-6 = 90
Add 6 to each side:
3x = 96
Divide both sides by 3:
x = 32
Now we have a value for x , use that to solve for angle b:
B = x +9 = 32 + 9 = 41 degrees.
Now we know A and B, we can solve for D.
The three inside angles of a triangle need to equal 180.
D = 180 - 90 - 41 = 49 degrees.
The answer is D) 49
Josh wants to buy 15 pounds of shrimp and 10 pounds of crawdads. He has 4 buckets that can each hold 6 pounds. How many pounds of shrimp and crawdads will not fit in the 4 buckets?
1 pound
Step-by-step explanation:
15+10=25
25÷6=24.1