Answers
Answer:
a)
[tex]x=-1\\x=-\frac{3}{4}[/tex]
b)
[tex]x=\frac{11}{6}[/tex]
Step-by-step explanation:
[tex]Formula: x=\frac{-b\frac{+}{}\sqrt{b^2-4ac} }{2a}[/tex]
[tex]a)-4x^2+7x-3=0[/tex]
a= -4
b= 7
c= -3
[tex]x=\frac{-(7)\frac{+}{}\sqrt{(7)^2-4(-4)(-3)} }{2(-4)}[/tex]
[tex]x=\frac{-7\frac{+}{}\sqrt{49-48} }{-8}[/tex]
[tex]x=\frac{-7\frac{+}{}\sqrt{1} }{-8}[/tex]
[tex]x=\frac{7\frac{+}{}1 }{-8}[/tex]
------------------------------
[tex]x=\frac{7+1 }{-8}=\frac{8}{-8}=-1[/tex]
or
[tex]x=\frac{7-1 }{-8}=\frac{6}{-8}=-\frac{3}{4}[/tex]
------------------------------
[tex]b)36x^2-132x+121=0[/tex]
a= 36
b= -132
c= 121
[tex]x=\frac{-b\frac{+}{}\sqrt{b^2-4ac} }{2a}[/tex]
[tex]x=\frac{-(-132)\frac{+}{}\sqrt{(-132)^2-4(36)(121)} }{2(36)}[/tex]
[tex]x=\frac{132\frac{+}{}\sqrt{17424-17424} }{72}[/tex]
[tex]x=\frac{132\frac{+}{}\sqrt{0} }{72}[/tex]
[tex]x=\frac{132\frac{+}{}0 }{72}[/tex]
------------------------------------------------
[tex]x=\frac{132}{72}[/tex]
[tex]x=\frac{132/6}{72/6}=\frac{22}{12}=\frac{11}{6}[/tex]
Related Questions
find x and y i will give brainliest
Answers
Answer: N= 135, M=45.
Step-by-step explanation:The formula to find the degree inside of a shape is: (n-2)180. This is an octagon, so it has 8 sides, plug this in for n.
8-2 * 180
1080 divide by 8 to get the value of n
n=135
The formula for an angle outside of the shape is:
360/n n is still eight, so plug this in for n
360/8
m=45
Answer:
n = 135 degrees ( ° ) ,
m = 45 degrees ( ° )
Step-by-step explanation:
* Sorry I didn't answer this before *
1. In this figure we can see that this visual is a representation of an octagon, provided it's 8 sides.
2. Knowing this, let us split this figure into triangle 180 degrees each ⇒ compute the total interior angles in degrees.
3. If you were to draw lines from one vertex to any other non-adjacent vertices, it would be that 6 triangles are formed.
4. One triangle ⇒ 180 degrees ( ° ) so that this octagon ⇒ 180° * number of triangles, or ⇒ 180 * 6 = 1080°
5. Knowing that this shape is a regular polygon, all angles are congruent such that if x represents one interior angle ⇒ 8x = 1080, ⇒ x = 135°. As n acts as one of the interior angles in this figure ⇒ n = 135 degrees ( ° )
6. Now through supplementary angles, the interior angle adjacent to angle m would form a linear pair, adding to 180°.
7. This would mean that m + interior angle = 180, and as all interior angles were found to be 135 degrees ⇒ m + 132 = 180 ⇒ m = 45 degrees ( ° )
Help pleaseee
Help right know
Answers
Answer:
28
Good luck
Step-by-step explanation:
Answer:
Down below
Step-by-step explanation:
B=7
H=4
7*4= 28
ANSWER: 28
10 teams are in the Olympic bobsled finals. How many different ways can the teams win the medals?
In the Olympics, you get a gold medal for 1st, silver for 2nd and bronze for 3rd.
Answers
4.9.21
Solve the system of equations.
y=x² + 6x-2
y= - x2 + 4x + 22
Select the correct choice below and, if necessary, fill in box
- the solution(s) are:
- there is no solution
Answers
Answer:
x = -4 or 3
Step-by-step explanation:
[tex]x^{2}[/tex] + 6x - 2 = -[tex]x^{2}[/tex] + 4x + 22
2[tex]x^{2}[/tex] + 2x - 24 = 0
[tex]x^{2}[/tex] + x - 12 = 0
(x + 4)(x - 3)=0
x = -4 or 3
because
Use the proof to answer the question below.
Given: AB || DE and ZA = LC
Prove: M4BC - ADEC
a. SAS
b. AA
c. SSS
d. AAS
Answers
Answer:
if B is AAA then that is correct
Step-by-step explanation:
What is the domain of the function represented by the graph?
the graph of a quadratic function with a maximum value at the point (2,4) and zeros at 0 and 4
A.
x ≥ 0
B.
0 ≤ x ≤ 4
C.
all real numbers
D.
x ≤ 4
Answers
Answer:
All real numbers
Step-by-step explanation:
Answer:
Have a great rest of your day :)
Step-by-step explanation:
Question 5 (1 point)
Answers
Answer:
B. [tex]\frac{d + 13}{d + 4}[/tex]
Hope this Helps :)
will mark brainliest
jeffs water bill includes a base charge of 12$ plus a charge of 1.50$ for each 1000 gallons of water used. jeffs water bill is 28.50$
how many gallons of water did jeff use?
Answers
Answer:
11,000 gallons
Step-by-step explanation:
Jeffs water bill = 28.50
Charge for water used = 28.50 - 12 = 16.50
Therefore number of gallons used = 16.50/1.50 x 1000 = 11,000 gallons
When 3 is subtracted from 1/3 of a number n, the result is less than 6. Which inequality and solution represent this situation?
A: 1/3n - 3 < 6; n < 27
B: 3 - 1/3n < 6; n > -9
C: 1/3n - 3 < 6; n < 9
D: 3 - 1/3n < 6; n < -9
Answers
Answer: A
Step-by-step explanation:
1/3n (variable)
-3 (it says subtracted)
(is less than 6)
(n is less that 27)
What percentage of temperatures are below 55 degrees
Answers
Answer:
D) 20%
Step-by-step explanation:
Answer: The answer is B. 25%
1. A three-dimensional figure that has one vertex and one circular base is known as a:
Answers
Answer:
cone
Step-by-step explanation:
If A = (0,0) and B = (6,3), what is the length of AB?
O A. 6.24 units
O B. 7.73 units
O C. 5.20 units
O D. 6.71 units
Answers
Answer:
D. 6.71 units
Step-by-step explanation:
In order to solve this, we need to use the distance formula, which states that for two points [tex](x_1,y_1)[/tex] and [tex](x_2,y_2)[/tex]:
d = [tex]\sqrt{(y_2-y_1)^2+(x_2-x_1)^2}[/tex]
Here, we have (0, 0) and (6, 3), so:
d = [tex]\sqrt{(y_2-y_1)^2+(x_2-x_1)^2}[/tex]
d = [tex]\sqrt{(3-0)^2+(6-0)^2}=\sqrt{9+36} =\sqrt{45} =3\sqrt{5}[/tex] ≈ 6.71
The answer is thus D.
Answer:
D 6.71 units
Step-by-step explanation:
AB² = (6 - 0)² + (3 - 0)²
AB² = 36 + 9
AB² = 45
AB = 3sqrt(5)
Approximately 6.71
please help
Which two points on the number line are opposites?
A number line going from negative 2 to positive 2 in increments of 1. There are 3 equal spaces between each number. Point A is 1 mark to the right of negative 2. Point B is 1 mark to the right of negative 1. Point C is 1 mark to the right of 0. Point D is 2 marks to the right of 1.
points A and B
points B and C
points C and D
points A and D
Answers
Answer:
Its B C
Step-by-step explanation:
on edge2020
The equations 2 x minus 5 y = negative 5, 11 x minus 5 y = 15, 9 x + 5 y = 5, and 14 x + 5 y = negative 5 are shown on the graph below.
On a coordinate plane, there are 4 lines. Green line goes through (2, 1.5) and (0.5, negative 2). Blue line goes through (0, 1) and (0.5, 0). Pink line goes through (negative 1, 2), and (0, negative 1). Orange line goes through (0, 1) and (2, 1.75).
Which system of equations has a solution of approximately (–0.6, 0.8)?
Answers
Answer:
[tex]14x+5y=-5\\2x-5y=-5[/tex]
Step-by-step explanation:
The given equations are
[tex]2x-5y=-5\\11x-5y=15\\9x+5y=5\\14x+5y=-5[/tex]
Let's demontrate that the system
[tex]14x+5y=-5\\2x-5y=-5[/tex]
Has (-0.6, 0.8) as solution, approximately.
If we sum those equations, we have
[tex]16x=-10\\x=\frac{-10}{16} \approx -0.625[/tex]
Then, we use this value to find the other one
[tex]2x-5y=-5\\2(-0.625)-5y=-5\\-5y=-5+1.25\\y=\frac{-3.75}{-5} \approx 0.75[/tex]
As you can see, the answers aproximates to (-0.6, 0.8).
Therefore, the right system is
[tex]14x+5y=-5\\2x-5y=-5[/tex]
Answer:
B
Step-by-step explanation:
1. Consider a sphere with a radius with an 18 inches.
Part A: Determine the surface area of the sphere.
Answers
Answer:
Surface Area = 4071.5
Step-by-step explanation:
A = 4 π [tex]r^2[/tex]
A = 4 ×π×18×18
A = 4071.5
Bravo!
Miss McGrew is making stools for her first graders to use during story time. To make the stools, she covers wooden cubes with carpet.
How much carpet does it take to cover each cube?
Answers
Answer:
9600
Step-by-step explanation:
Khan Academy LOL
P.S plz mark as brainliest and smack that thank you button also rate 5 stars
Answer:
9600 is the correct answer.
Step-by-step explanation:
Find the volume of the cone
Answers
Answer: 18.85 units^3
Step-by-step explanation:
V = 3.14 x r^2 x h/3
Answer:
[tex]≈
18.849 {units}^{3} [/tex]
Step-by-step explanation:
[tex]v = \pi {r}^{2} \frac{h}{ 3} \\ = \pi \times {3}^{2} \times \frac{2}{3} \\ ≈
18.84956
[/tex]
hope this helps
brainliest appreciated
good luck! have a nice day!
PLS HELP NEED TO PASS TEST :)))
What is the volume of the given prism? Round the answer to the nearest tenth of a centimeter. The figure is not drawn to scale.
295.5 cm^3
451.7 cm^3
493.0 cm^3
617.1 cm^3
Answers
Answer:
617.1vm3
Step-by-step explanation:
V =12.4*7.9*6.3 = 617.1cm3
Choose all of the terms that can be used for x in a function.
Answers
Answer:
Eg.y=3x
Step-by-step explanation:
Answer:
Eg.y=3x
Step-by-step explanation:
Please help with this question
Answers
Answer:
10X + 20 +5X +25 = 180
15x=180-45
X= 135/15
X=9
Please mark me brainliest and thank me and rate me. Sis.
Simplify the expression. Write your answer as a power.
(-6.1) 1
(-6.1).(-6.1)2
The simplified expression is
.
Answers
Answer:
(-6.1)^2
Step-by-step explanation:
Look at the attachment
• Over-reliance on oil also increases economic unpredictability. When oil prices drop, as is presently the case, the related
decline in revenue requires cuts in public spending, which hurts growth in the non-oil sector and leads to lower public
employment
-adapted from Economic Diversification in Oil-Exporting Arab Countries, International Monetary Fund (April 2016)
Which of these statements best supports this argument?
ОА. Saudi Arabia does not export enough oil.
B. Saudi Arabia's oil supply is controlled by private corporations.
C. Saudi Arabia produces too little oil.
OD
Saudi Arabia's oil supply is controlled by the government.
Reset
Next Question
Answers
Answer:
B. Saudi Arabia's oil supply is controlled by private corporations.
Step-by-step explanation:
This is the best answer and is saying they are too reliant on other countries oils.
Answer:
B
Step-by-step explanation:
!!!!NEED HELP PLEASE!!!! At a video game rental store, you need to pay a $20 membership fee to rent the video games at a cheaper price. Based on the table, what is the cost per video game?
Answers
Answer:
$2
Step-by-step explanation:
if the 0 games are $20 that means that is your beginning start
because you got the membership.
Then from the 5 games is $30
you take away 20 from 30 and is left with $10
then divide that by the 5 games you get
$2 per game
find the output, y, when the input, x, is -5.
Answers
Answer:
y = -2
Step-by-step explanation:
When x = -5
Go to the blue line
y = -2
Answer:
There are 2 questions with the same question but with a different graph.
This graphs answer is -2.
But the other graph that people are confused about is 7.
Step-by-step explanation:
Hope this helps! :)
This number line shows 21/4
Which other number line shows a fraction equivalent
to 21/4
Answers
Answer:
I think it’s the second number line.
Step-by-step explanation:
The distances (y), in miles, of two cars from their starting points at certain times (x), in hours, are shown by the equations below:
PPLLLZZZ HEEELPP WILL MARKK BRAINLESTTT!!!! PLEASE HURRY
Car A
y = 55x + 32
Car B
y = 42x + 58
After how many hours will the two cars be at the same distance from their starting point and what will that distance be?
2 hours, 142 miles
2 hours, 145 miles
3 hours, 142 miles
3 hours, 145 miles
Answers
Answer:
2 hours, 142 miles
Step-by-step explanation:
Given;
equation of motion of car A as;
y = 55x + 32
equation of motion of car B as;
y = 42x + 58
where;
y is distance measured in miles
x is time measured in hours
When the distance of the two cars are equal, we will have the following equation;
55x + 32 = 42x + 58
collect like terms and solve for x
55x - 42x = 58 - 32
13x = 26
x = 26 /13
x = 2 hours ( x is time measured in hours)
Now substitute in the value of x into any equation of the cars;
y = 55x + 32
y = 55 (2) + 32
y = 110 + 32
y = 142 miles ( y is distance measured in miles)
Thus, the correct option is 2 hours, 142 miles
PLS HELP PLEASE I NEED THIS!!!!! LOOK AT THE PICTURE PLS!!!!!
Answers
You can distribute the -3 to the x and the 2 to get -3x-6 and then because it’s squared it gets multiplied by itself so (-3x-6) times(-3x-6) which gives you the answer of 9x^2+36x+36
Which two terms are interchangeable
Answers
Answer:
C hope this helped :D if not plz let me know..
The terms that are interchangeable are axioms and postulates.
What are Axioms and Postulates ?"In mathematics or logic, an axiom is an unprovable rule or first principle accepted as true because it is self-evident or particularly useful. “Nothing can both be and not be at the same time and in the same respect” is an example of an axiom"
"The term is often used interchangeably with postulate, though the latter term is sometimes reserved for mathematical applications (such as the postulates of Euclidean geometry). It should be contrasted with a theorem, which requires a rigorous proof."
By the definition of Axiom and postulates,
It is clear that Axiom and postulates are interchangeable, since they both used as a unprovable rule.
Hence A is the correct option.
To know more about axioms and postulates here
https://brainly.com/question/10665597
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David correctly factored the expression m^2-12m - 64.
Which expression did he write?
(1) (m - 8)(m - 8) (3) (m - 16)(m +4)
(2) (m - 8)(m + 8) (4) (m +16)(m - 4)
Explain why
Answers
Answer:
(m-16)(m+4)
Step-by-step explanation:
To factor a quadratic expression
First write the variable in each parentheses, then put negative/ positive, after that ask yourself what numbers have the product of the coefficient of x^0 and the sum of x^1.
David correctly factored the expression m^2 - 12m - 64 and got (m - 16)(m + 4).
How to factor an equation?An equation can be factored into its factors by splitting the middle term of the equation.
The given expression can be factored as shown below:m^2 - 12m - 64 = 0
⇒ m^2 - 16m +4m - 64 = 0
⇒ m(m - 16) + 4(m - 16) = 0
⇒ (m + 4)(m - 16) = 0
The factors of the equation m^2 - 12m - 64 = 0 are (m - 16)(m + 4).
Therefore, we have found that David correctly factored the expression m^2 - 12m - 64 and got (m - 16)(m + 4). The correct answer is option C or (3).
Learn more about factorization here: https://brainly.com/question/25829061
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Solving absolute value inequalities help!
Answers
Answer:
I don't really know whats going on in the picture but here is how you solve absolute value inequalities
Step-by-step explanation:
Step 1: Isolate the absolute value expression.
Step2: Set the quantity inside the absolute value notation equal to + and - the quantity on the other side of the equation.
Step 3: Solve for the unknown in both equations.
Step 4: Check your answer analytically or graphically.
Answer:
r u in advanced bc thats to hard
Step-by-step explanation:
