Select the two values of x that are roots of this equation.
+ 33-3=0
A. x.-345
-3-√21
2
c. x = -3+727
D.
-3- v3
2
Answers
Answer:
A and B
[tex] {x}^{2} + 3x - 3 = 0 \\ x = \frac{ - b± \sqrt{ {b}^{2} - 4ac} }{2a} \\ x = \frac{ - 3± \sqrt{21} }{2} [/tex]
Related Questions
Maya wants to determine the area of a circle. She uses a compass and ruler to draw a circle that has a radius of r. She then inscribes a regular octagon within the circle, as shown above. The octagon is divided into 8 congruent triangles, and each of the 8 interior angles measure 45°.
She then labels the height and base of one of the triangles within the circle. She labels the height h, and the base, b.
She then makes three claims about her work.
Determine whether each claim Maya makes is correct. Select True or False for each claim.
Answers
Answer:
1st one is true, 2nd is true and 3rd is false
Step-by-step explanation:
pioneers are buying mules to trek across the country. each of the 5 wagons require e mules to pull them. write the equation to express the relationship between the total mules d they need to and all the wagons. x=1y
Answers
Answer:
d = 5e
Step-by-step explanation:
Number of wagons = 5
Number of miles per wagon = e
Total number of mules = d
Hence, relationship between total mules d needed will be ;
Total mules = number of wagons * Numbe rof mules per wagon
d = 5e
A. G(X) > -6
B. All real numbers
C. G(X) < 0
D. G(X) < 10
Answers
Answer:
can't explain how but i'm confident the answer is:
A. G(X) > -6
Solve the system of equations using substitution or graphing.
y= -x2 + 4x + 5
y= x + 1
OA) (-1,0) and (6,7)
OB) (-1,0) and (4,5)
C) (1, 2) and (4,5)
D) (1, 2) and (6,7)
Answers
Which numbers are rational?
Select each number that is correct.
23.429
10
13
151
8/7
-4.93
Answers
Answer:
All of them.
Step-by-step explanation:
Rational numbers are defined as the numbers that can be expressed as the ratio of two integers(a/b) where b must be a non-zero number. The rational numbers display a terminating characteristic and they also contain repeating, as well as, recurring digits. All the given numbers are rational as they can be written in the form of p/q.
23.429 = It can be written as a fraction. So, it is a rational number.
10 = 10 is a whole number and it can be written in the form of a/b i.e. 10/1. So, it is a rational number.
13 = 13 also can be written in ration form as 13/1. Therefore, it is also a rational number.
151 = It can be written as 151/1. Hence, it is a rational number.
8/7 = It is already mentioned in the form of a/b. So, it is a rational number.
-4.93 = since it is an integer, it will surely be a rational number.
Cab 1 charges $1 per kilometer. Cab 2 charges $0.50 per kilometer and a $4 base charge. Solve for the value of k(kilometers ) that the 2 cab companies would cost the same.
Answers
Answer:
k=8
Step-by-step explanation:
Cab 1 : 1/km
Cab2: 0.5 /km with Base charge =4
x=0.5 x+4
x-0.5x=4
0.5x=4
4/0.5=x
x=8
Assume x=k
k=8
If cose < 0 and cote > 0, then the terminal point determined by e is in:
A. quadrant 4.
B. quadrant 1.
C. quadrant 3.
D. quadrant 2.
Answers
If not let me know please and sorry if it is wrong:)
If cos < 0 and cot > 0, then the terminal point is determined by
C. quadrant 3.
What are reference angles according to quadrats?We have I, II, III, IV quadrants.In quadrant I the referece angle Ф is Ф.
In quadrant II the referece angle Ф is (π - Ф).
In quadrant III the referece angle Ф is (π + Ф).
In quadrant IV the referece angle Ф is (2π - Ф).
We know, cos is -ve on III and IV quadrants, and cot = 1/tan is +ve on I and III quadrant.
Therefore, The combined condition cos < 0 and cot > 0 satisfies on the II quadrant.
learn more about quadrants here :
https://brainly.com/question/7196312
#SPJ7
I NEED HELP PLEASEeeee
Answers
Answer:
All false jhgffyyhvfftuhvgfy
if it is correct i will mark as brainlist or i will report
Answers
Answer:
The number of non-positive integral values of [tex]k[/tex] are contained in the following set:
[tex]S_{k} = \{-1, 0\}[/tex]
Step-by-step explanation:
Let be the following second order polynomial:
[tex]x^{2}-(k + 1)\cdot x + (k^{2}+k -8) = 0[/tex], [tex]k \le 0[/tex] (1)
Whose roots can be found by the Quadratic Formula:
[tex]x_{1,2} =\frac{k + 1\pm \sqrt{k^{2}+2\cdot k +1 - 4\cdot k^{2}-4\cdot k +32 }}{2}[/tex]
[tex]x_{1,2} = \frac{k+1}{2} \pm \frac{\sqrt{33-2\cdot k -3\cdot k^{2}}}{2}[/tex]
Based on the statement, we have the following system of inequations:
[tex]\frac{k+1}{2} + \frac{\sqrt{33 - 2\cdot k -3\cdot k^{2}}}{2} > 2[/tex] (2)
[tex]\frac{k+1}{2} - \frac{\sqrt{33 - 2\cdot k -3\cdot k^{2}}}{2} < 2[/tex] (3)
By (2) we have:
[tex]k + 1 + \sqrt{33-2\cdot k -3\cdot k^{2}} > 4[/tex]
[tex]\sqrt{33 -2\cdot k - 3\cdot k^{2}} > 4 - (k + 1)[/tex]
[tex]33 - 2\cdot k -3\cdot k^{2} > [4 - (k+ 1)]^{2}[/tex]
[tex]33 - 2\cdot k -3\cdot k^{2} > 16 -8\cdot (k+1)+(k+1)^{2}[/tex]
[tex]33 - 2\cdot k - 3\cdot k^{2} > 16-8\cdot k -8 + k^{2}+2\cdot k + 1[/tex]
[tex]33 - 2\cdot k -3\cdot k^{2} > 9 -6\cdot k + k^{2}[/tex]
[tex]0 > 4\cdot k^{2}-4\cdot k -24[/tex]
[tex]4\cdot k^{2}-4\cdot k -24< 0[/tex]
[tex]4\cdot (k^{2}-k-6) < 0[/tex]
[tex]k^{2}-k - 6 < 0[/tex]
[tex](k -3)\cdot (k+2) < 0[/tex]
The solution is:
[tex]k \in (-2, 3)[/tex]
Likewise, we get the following expression from (3):
[tex]k^{2}-k - 6 > 0[/tex]
[tex](k -3)\cdot (k + 2) > 0[/tex]
The solution is:
[tex]k \in (-\infty, -2)\,\cup\,(3, +\infty)[/tex]
The number of non-positive integral values of [tex]k[/tex] are contained in the following set:
[tex]S_{k} = \{-1, 0\}[/tex]
18. If an apprentice can do a piece of work in 24 days, and the apprentice and
instructor together can do it in 6 days, how long would it take the instructor to do
the work alone?
18. If an apprentice can do a piece of work in 24 days, and the apprentice and
instructor together can do it in 6 days, how long would it take the instructor to do
the work alone?
Answers
Answer:
the number of days when instructor do the work alone is 8 days
Step-by-step explanation:
Given that
The apprentice can do the work in 24 days
And, the apprentice and instructor together can do it in 6 days
We need to find out the number of days when instructor do the work alone
So,
[tex]= \frac{1}{6} - \frac{1}{24} \\\\= \frac{4 - 1}{24} \\\\= \frac{3}{24} \\\\= \frac{1}{8} \\\\= 8[/tex]
hence, the number of days when instructor do the work alone is 8 days
Factor the polynomial
x^3-3x^2+x
Answers
Answer:
Solution given:
x³-3x²+x
taking common
x(x²-3x+1)
is a required answer.
how many 1/8 cups are in 4/4
Answers
Answer:8
is the answer
A theater sells adult tickets for $11 and child tickets for $6. At one show, the theater sold 180 tickets and received $1740.
How many adult tickets were sold? Enter the answer in the box.
Answers
A = adult, C = child
Total tickets = 180
Total cost = $1740
A + C = 180
11A + 6C = 1740
Use any method
I will use elimination
(A + C = 180) * 6
6A + 6C = 1080
11A + 6C = 1740
Subtract both sides
-5A = -660, A = 132
Solution: 132 adult tickets
How do i make a form with a formule
look at the picture bellow
can somebody tell me HOW to do it?
thanks!
Answers
You have an equation and a table with the x value given.
Replace x in the formula with the x value in the table and solve for y.
y = x^2 + 1
y = (-3)^2 + 1 = 9+1 = 10
y = (-2)^2 +1 = 4+1 = 5
y = (-1)^2 +1 = 1+1 = 2
y = (0)^2 + 1 = 0+1 = 1
y = (1)^2 +1 = 1+1 = 2
y = (2)^2 +1 = 4+1 = 5
y = (3)^2 +1 = 9+1 = 10
Rewrite the expression using exponents.
7 • 4 • 4 • 4
(Type whole numbers.)
Answers
Answer: 7×4³
Step-by-step explanation:
Answer:
7 x 4³
Step-by-step explanation:
using exponents to my understanding,
the answer vis supposed to be;
7 x 4³
Which equation is true?
Answers
Answer:
The third option
Step-by-step explanation:
[tex]\frac{-56}{8} = -7[/tex]
A sample of experienced typists revealed that their mean typing speed is 87 words per minute and the median typing speed is 73 words per minute. The standard deviation of typing speed is 16.9 words per minute. What is the Pearson coefficient of skewness
Answers
Answer:
The Pearson coefficient of skewness is of 0.8284.
Step-by-step explanation:
Pearson skewness:
The skewness of a data set is given by the subtraction of the mean by the median, divided by the standard deviation.
In this question:
The mean is of 87, the median is of 73 and the standard deviation is of 16.9. So
(87-73)/16.9 = 0.8284.
The Pearson coefficient of skewness is of 0.8284.
Direct Variation
The distance D that a spring is stretching by a hanging object varies directly as the weight W of the object. If a 9-kg object stretches a spring 54 cm. Find the distance when the weight is 2-kg. Round your answer to the nearest whole centimeter.
a. 65 cm
b. 12 cm
c. 0 cm
d. 6 cm
Please select the best answer from the choices provided
Answers
Answer:
B. 12
Step-by-step explanation:
I calculated it logically
Can anyone help me ASAP please
Answers
Help on this pls ?????????
Answers
Answer:
8u =32 this is the equation
Answer and Step-by-step explanation:
8u = 32 is the answer.
This is because there are eight U's, and it is equal to 32.
#teamtrees #PAW (Plant And Water)
What is 787,452 rounded to the nearest ten thousand?
Answers
Answer:
790000
Step-by-step explanation:
Answer:
790,000
Step-by-step explanation:
What is the value of x?
Answers
Answer:
Hello! answer: x = 15
Step-by-step explanation:
Here is a visual i created of what the complementary angle would look like!
Express ( 3/2x-2)^2
as a trinomial in simplest form.
Answers
Answer:
9/4x^2 - 6x +4
Step-by-step explanation:
( 3/2x-2)^2
(3/2x-2)(3/2x-2)
9/4x^2 - 3x - 3x +4
9/4x^2 - 6x +4
3/2 x 2 = 6/2 = 3
Step-by-step explanation:
( 3/2x-2)² = 9/4 x²- 6x +4
Write the equation in either slope-intercept or point-slope form for the
line that goes through (1,1) and (3,-5). *
Answers
Answer:
y = mx + b
m = (-5-1)/(3-1)
m = -3
1=(-3)1 + b
b= 4
y= -3x + 4
Resuelve el siguiente ejercicios de porcentaje:
¿32 representa el 64% de qué número?
Answers
Answer:
50
Step-by-step explanation:
32/0.64 = 50
please help me do this question
Answers
Answer:
2/10
Step-by-step explanation:
Im pretty sure its 2/10
have a great day:)
Which of the following statements best describes the difference between net income and gross profit? a. Gross profit considers operating expenses while net income does not. b. Net income considers operating expenses while gross profit does not. c. Gross profit deducts taxes while net income does not. d. Net income deducts taxes while gross profit does not. Please select the best answer from the choices provided A B C D
Answers
Answer:
its b
Step-by-step explanation:
edg 20/21
Find an equation of the line that passes through the point (2, 4) and is perpendicular to the line 4x + 9y - 2 = 0 (let x be the independent variable and y be the dependent variable.
Answers
Answer:
y = 9/4x -1/2
Step-by-step explanation:
4x + 9y -2=0
solve for y: 4x-2=-9y
(4x-2)/-9 =
y =4/-9x-2/9
perpendicular means reciprocal of slope. So 4/-9 changesz to 9/4
For the point plug in y and x:
9/4*2+b=4
b = -0.5
I attached graph as proof
Evaluate the following complex expression. (4+ i) 2= + i (-4 i)(3 i)= i 3(9- i)= - i (5+2 i)(3-7 i)= - i (8+5 i)+2(3 i-4)= i (4+6 i)-(-4- i)= + i
Answers
Answer:
Operations on Complex Numbers (page 2 of 3) ... Simplify (2 – i)(3 + 4i). (2 – i)(3 + 4i) = (2)(3) + (2)(4i) + (–i)(3) + (–i)(4i). = 6 + 8i – 3i – 4i2 = 6 + 5i – 4(–1) ... exact same techniques for simplifying complex-number expressions as you do for polynomial ... Suppose you have the following exercise:
Step-by-step explanation:
HELPPP
PLLS
DUE RN
WILL
GIVE BRAINLIST
X
X
X
X
Answers
Answer:
33% of the people preferred onions
can i get brainliest now lol