Answers
Step-by-step explanation:
a = 1, b = 9, c = 8
with the quadratic formula;
x = -9 + \|9² - 4(1 × 8) ÷ 2(1) or x = -9 - \|9² - 4(1 × 8) ÷ 2(1)
x = -9 + \| 81 - 32 ÷ 2 or x = -9 - \| 81 - 32 ÷ 2
x = -9 + \| 49 ÷ 2 or x = -9 - \| 49 ÷ 2
x = -9 + 7 ÷ 2 or x = -9 - 7 ÷ 2
x = -2 ÷ 2 or x = -16 ÷ 2
x = -1 or x = -8
Related Questions
EASY MATH PLEASE HELP!! : ) : )
NO LINKS PLEASE
EXPLANATION REQUIRED
A new school is ordering math textbooks. They are 3/4 of an inch thick. How many of these books will fit into a bookshelf that is 2 feet long?
A) 2 books
B) 12 books
C) 26 books
D) 32 books
Answers
Answer:
32 Books
Step-by-step explanation:
You know that the bookshelf is 2 feet long, and you know the book is 3/4 inches thick. To start you have to get a common measurement in this case we will use inches. You already know that 1 foot is 12 inches so 2 feet will be 24 inches. Next all you do is divide the 24 inches by 3/4 inches. This will give you 32 which is the total amount of books that can fit on the bookshelf.
Marulla's z score on a college entrance exam is 1.3. If the raw scores have a mean of 480 and a standard deviation of 70 points, what is her raw score?
Answers
Answer:
571
Step-by-step explanation:
We solve using z score.
z = (x-μ)/σ, where
x is the raw score = ?
μ is the population mean = 480
σ is the population standard deviation = 70
z = 1.3
Hence,
= 1.3 = x - 480/70
Cross Mulitiply
1.3 × 70 = x - 480
91 = x - 480
x = 480 + 91
x = 571
Therefore, Marulla's raw score is 571
a triangle has vertices r(1,2), s(3,3) and t(-3,4)
Answers
Give The Rest of the question
Answer:
Reflection about x axis
r(1,2)-----------r'(1,-2)
, s(3,3) ..........s'(3,-3)
and t(-3,4).....t'(-3,-4)
Carol creates a flag consisting of two similar triangles and labels them
A ABC and A XYZ. Side AB is 5 cm and side XY is 15 cm. If the perimeter of A
ABC is 16 cm, what is the perimeter of A XYZ ?
A) 26 cm
B) 6cm
C)48cm
D)144cm
Answers
Answer: 48
Step-by-step explanation:
In a game, students draw a card, replace it, and then draw again. What is the probability of drawing a prime number then a composite number
Answers
Answer:
16 / 81
Step-by-step explanation:
Between digits 0 ,1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9
Prob (prime number) = Prime numbers / Total numbers ; Prime numbers = 1,3,5,7. So, Prob = 4 / 9
Prob (composite number) = Composite numbers / Total numbers ; Composite numbers = 2, 4, 6 , 8. So, Prob = 4 / 9
Prob (Prime & Composite) = 4 / 9 x 4 / 9 = 16 / 81
help!!!!!!!!! i am really confused and need help
Answers
Answer:
g(-3)= -3^3-7
= -27-7
= -34
please help me, due tomorrow!!!
Answers
Answer:
1. B
Step-by-step explanation:
the only 1 i could do is number 1 which i dont even think it is correct
solve for x. and please explain your answer
Answers
Santos flipped a coin 300 times. The coin landed heads up 125 times. Find the ratio of heads to total number of coin flips. Express as a simplified ratio. Answers:
A- 5 to 12
B- 7 to 12
C- 12 to 5
D- 5 to 7
Answers
Answer:
5/12
Step-by-step explanation:
No. of times coin landed head up / Total no. of flips
= 125 / 300
= 25*5 / 25*12
= 5 / 12
help help help help help
Answers
Step-by-step explanation:
volume = [(15×11)+(½×15×8)] x 12
= (165+60) x 12
= 225×12
= 2,700 cm³
Answer:
31350cm^3
Step-by-step explanation:
1/2(5 x 9.5 x 11)
= 261.25
261.25 x 12
= 3135
3135 x 10 = 3135cm^3
Please mark as brainliest if answer is right
Have a great day, be safe and healthy
Thank u
XD
plz help i have been asking this question way too much
Answers
Answer:
10/3 or 3 1/3
Step-by-step explanation:
The number of miles a car travels varies directly with the number of gallons of gas in its tank of a car with 20 gallons of gas can drive 560 miles which equation represents the number of miles an
Answers
Answer:
28 miles per gallon
560/20=28
Step-by-step explanation:
Plz give me brainliest
Number of miles a car travels are 28.
What is division?The division is the process of repetitive subtraction. It is the inverse of the multiplication operation. It is defined as the act of forming equal groups. While dividing numbers, we break down a larger number into smaller numbers such that the multiplication of those smaller numbers will be equal to the larger number taken.
Number of gallons of gas = 20
A car with 20 gallons of gas can drive 560 miles
Based on the given conditions,
= [tex]\frac{560}{20}[/tex]
= 28
Hence, number of miles are 28.
Find out more information about division here
https://brainly.com/question/10850080
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8 gis can fold 5 paper cranes in 6 minutes. how long will it take 36 girls to fold 120 paper cranes? with proper working.
Answers
please help i need to get out of recovery mode so i can do 20 other assignments including a final exam
Answers
Answer:
3
Step-by-step explanation:
y = -3x^2 + 5x + 3
↑ this is "the number at the end/constant," and according to the question the number at the end/constant is the y-intercept
Thus, the y-intercept is 3.
Malcom is filling bags with rice. He starts with 5 1/4 lbs. container of rice and fills each bag with 5/8 pound of rice. How many bags can Malcom fill?
Answers
The graph of a function contains the points (6, 7) and (10, 13). Which of these statements is correct based on this information?
A. If the graph also contains the point (4, 4) then the function must not be linear.
B. If the graph also contains the point (12, 16) then the function must not be linear.
C. If the graph also contains the point (1, 2) then the function could be linear.
D. If the graph also contains the point (8, 10) then the function could be linear.
Answers
Answer:
The true statements are:
B and D.
Step-by-step explanation:
First, a linear function can be written as:
y = a*x + b
Such that a is the slope, and b is the y-intercept.
If we know that the graph of the function passes through the points (x₁, y₁) and (x₂, y₂) then the slope is:
a = (y₂ - y₁)/(x₂ - x₁)
Here we have a function that passes through the points (6, 7) and (10, 13), then if this function is linear, the slope is:
a = (13 - 7)/(10 - 6) = 6/4 = 3/2
Then the function will be something like:
f(x) = (3/2)*x + b
Knowing that the function passes through (6, 7), this means that:
f(6) = 7
Then:
(3/2)*6 + b = 7
3*3 + b = 7
9 + b = 7
b = 7 - 9 = -2
The function, if linear, is:
f(x) = (3/2)*x - 2
Now let's read the statements:
A) If the graph also contains the point (4, 4) then the function must not be linear.
If the point is a solution of the equation, then the function is linear.
If the point is not a solution of the equation, then the function is not linear.
f(4) = 4 = (3/2)*4 - 2
4 = 3*2 - 2
4 = 6 - 2 = 4
Then (4, 4) is a solution, so if the graph also contains the point (4, 4) the function can be linear. Then the statement "A" is false.
Now let's do the same analysis for the other statements:
B) If the graph also contains the point (12, 16) then the function must not be linear.
F(12) = 6 = (3/2)*12 - 2 = 3*6 - 2 = 18 - 2 = 16
6 = 16
(12, 16) is not a solution, so if the graph contains this point, the function is not a linear function, the statement is true.
C) If the graph also contains the point (1, 2) then the function could be linear.
f(1) = 2 = (3/2)*1 - 2 = 3/2 - 2 = -1/2
The point (1, 2) is not a solution, so if the graph contains this point, then the function can't be linear, so the statement is false.
D) If the graph also contains the point (8, 10) then the function could be linear.
f(8) = 10 = (3/2)*8 - 2
10 = 3*4 - 2 = 12 - 2
10 = 10
The point (8, 10) is a solution of the linear equation, so if the graph contains this point, the function could be linear, so the statement is true.
Find the volume and show work
Answers
Answer:
Volume = 2512 km³
Volume = 800π km³
Step-by-step explanation:
Volume Cylinder = Area circle * height
Let's input the info
Formula for the Area of a circle = πr²
Area circle = π*100
Since it asks to leave in terms of π or tenths ill give both.
Area circle = 100π
Area circle = 314
Volume = 100π * 8
Volume = 800π
Volume = 314 * 8
Volume = 2512
Units = km³
Volume = 800π km³
Volume = 2512 km³
If my answer is incorrect, pls correct me!
If you like my answer and explanation, mark me as brainliest!
-Chetan K
what is the point of intersection of the x-axis and the y-axis called
a xcoordinate
b origin
c y-coordinates
d quadrant
Answers
b)origin
The point of intersection (0, 0) is called the origin.
Hope it helps you
plz fast
Write an equivalent expression.
−2(5+7g)
Answers
Answer:
equivalent expression.
−2(5+7g) is -10-14g or -14g -10
Find the mean for the following set of data. Write the NUMBER ONLY for the answer.
25, 27, 30, 15, 18, 24, 15
Answers
Answer:
22
Step-by-step explanation:
25+27+30+15+18+24+15 all divided by 7
Use the combination formula to solve a problem when n = 6 and r = 4.
A. 60
B. 45
C. 30
D. 15
Answers
Answer:
D. 15 is correct.
I did the quiz.
Re-write the quadratic function belbw in Standard Form
y = 3(x - 3)(x - 2)
Answers
Answer:
y = 3x² - 15x + 18
Step-by-step explanation:
y = 3(x - 3)(x - 2) ← expand factors using FOIL
= 3(x² - 5x + 6) ← distribute parenthesis by 3
y = 3x² - 15x + 18 ← in standard form
ANSWER
SEE EXPLANATION
Step-by-step explanation:
3(x²-2x-3x+6)
3(x²-5x+6)
3x²-15x+18
Help out
Sishsbnxbxbxxnxj
Answers
Answer:
y=-6/5x -8
Step-by-step explanation:
slope is the same as gradient(m) so find the c in the equation y=mx+c using the point (-5,-2) which gives u -8 then substitute values of m and c in that very equation
Answer:
[tex]y=-\frac{6}{5}x-8[/tex]
Step-by-step explanation:
Same process as the other two lol
y= -(6/5)x+b
solve for b by plugging in the required coordinates
-2= -(6/5)(-5)+b
-2= 6+b
-8=b
put it all together
Jim's basketball team scores 97 points
in a game. The team made a total of 41
two-point and three-point baskets. How
many of each type of basket did the
team make?
A 15 two-pointers and
26 three-pointers
B 18 two-pointers and
23 three-pointers
C 23 two-pointers and
18 three-pointers
D 26 two-pointers and
15 three-pointers
Answers
Answer:
D) 26 two-pointers and 15 three-pointers
Step-by-step explanation:
x= 2 pointers
y= 3 pointers
Make a system of equations:
x=41-y
2x+3y=97
Plug In:
2(41-y)+3y=97
82+y=97
y= 15 (three point shots)
Check:
15(3)=45
97-45=52
52/2=26
x=26 (2 point shots)
A) y=1/3x-8
B) y=1/3x-4
C) y=1/3x+2
D) y=1/3x-14
Answers
Answer:
A
Step-by-step explanation:
Concept :-
The slope intercept form of a line is y = mx + c Where m is slope , and c is constant .On converting :-
[tex]\bf\implies y + 5 =\dfrac{1}{3}(x-9)\\\\\bf\implies y + 5 =\dfrac{1}{3}x - 3 \\\\\bf\implies y = \dfrac{1}{3}x - 3 - 5 \\\\\bf\implies\boxed{\red{y = \dfrac{1}{3}x -8 }}[/tex]
Hence option A is correct.
[tex]\huge\mathfrak\red{solve \: please..} \\ \\ \huge\mathcal\purple{ {2}^{2} + 3 {}^{2} = {?} } \\ \\ \huge\mathfrak\green{asap \: \: ..thanks.}[/tex]
Answers
Answer:
[tex]2^2+3^2[/tex]
[tex]2^2=4[/tex]
[tex]3^2=9[/tex]
[tex]=4+9[/tex]
[tex]=13[/tex]
----------------------
hope it helps..
have a great day!!
A computer can perform 4.66 x 10 exponent 8 calculations per second. How many calculations can this computer perform in one minute
Answers
Answer:
2.796x10^10
Step-by-step explanation:
4.66x10^8 in one second
1 minute is equal to 60 seconds
Multiply 4.66x10^8 by 60
= 2.796x10^10
When 5x^2−5 is completely factored, which is one of its factors?
Answers
Answer:
no, never completely factored with negative exponents
Step-by-step explanation:
5x^-3 = 5/x^3
classify a triangle with each set of side lengths as acute, right, or obtuse
Answers
Answer: Acute- (2,3,3.5) Right-(2.5,6,6.5) obtuse- (7,8,12), (7,9,14)
Step-by-step explanation:
Andre has seven dollars he needs $50 to buy a skateboard each week his grandmother pays him four dollars to complete some chores how much money does Andre have after the week
Answers
Answer:
$11
$39
Step-by-step explanation:
Amount Andre has = $7
Amount his grandmother pays him every week = $4
Amount Andre needs to buy a skateboard = $50
how much money does Andre have after the week?
Amount of money Andre has after the week = Amount Andre has + Amount his grandmother pays him every week
= $7 + $4
= $11
Amount of money Andre has after the week = $11
Amount Andre needs more to buy the skateboard = Cost of the skateboard - Amount of money Andre has after the week
= $50 - $11
= $39
Amount Andre needs more to buy the skateboard = $39