Answers
Answer:
i'm pretty sure its c
Step-by-step explanation:
have a great day!!
Answer:
The quadratic equations and their solutions are;
9 ± √33 /4 = 2x² - 9x + 6.
4 ± √6 /2 = 2x² - 8x + 5.
9 ± √89 /4 = 2x² - 9x - 1.
4 ± √22 /2 = 2x² - 8x - 3.
Explanation:
Any quadratic equation of the form, ax² + bx + c = 0 can be solved using the formula x = -b ± √b² - 4ac / 2a. Here a, b, and c are the coefficients of the x², x, and the numeric term respectively.
We have to solve all of the five equations to be able to match the equations with their solutions.
2x² - 8x + 5, here a = 2, b = -8, c = 5. x = -b ± √b² - 4ac / 2a = -(-8) ± √(-8)² - 4(2)(5) / 2(2) = 8 ± √64 - 40/4. 24 can also be written as 4 × 6 and √4 = 2. So x = 8 ± 2√6 / 2×2= 4±√6/2.
2x² - 10x + 3, here a = 2, b = -10, c = 3. x =-b ± √b² - 4ac / 2a =-(-10) ± √(-10)² - 4(2)(3) / 2(4) = 10 ± √100 + 24/4. 124 can also be written as 4 × 31 and √4 = 2. So x = 10 ± 2√31 / 2×2 = 5 ± √31 /2.
2x² - 8x - 3, here a = 2, b = -8, c = -3. x = -b ± √b² - 4ac / 2a = -(-8) ± √(-8)² - 4(2)(-3) / 2(2) = 8 ± √64 + 24/4. 88 can also be written as 4 × 22 and √4 = 2. So x = 8 ± 2√22 / 2×2 = 4± √22/2.
2x² - 9x - 1, here a = 2, b = -9, c = -1. x = -b ± √b² - 4ac / 2a = -(-9) ± √(-9)² - 4(2)(-1) / 2(2) = 9 ± √81 + 8/4. x = 9 ± √89 / 4.
2x² - 9x + 6, here a = 2, b = -9, c = 6. x = -b ± √b² - 4ac / 2a = -(-9) ± √(-9)² - 4(2)(6) / 2(2) = 9 ± √81 - 48/4. x = 9 ± √33 / 4 .
Step-by-step explanation:
Related Questions
find the radius circumference of this circle
Answers
Answer:
YOUR QUESTION IS NOT COMPLETE WITHOUT MENTIONING ANY FOLLOWING NUMBERS WE CANNOT FIND THE CIRCUMFERENCE OR diameter,radius....
And left or right units
Answers
Answer:
i belive the first up 3 un its and the second is 5
Step-by-step explanation:i think i had this on a test question if wrong pls tell me will help through it
I WILL GIVE BRAINLIEST IF CORRECT
Answers
Answer:
4th answer
Step-by-step explanation:
Im a genius
Answer:
B.
Step-by-step explanation:
Hope this helps
5.
Solve the equation
15 - 4x = 2(3x + 1).
Answers
[tex]\huge\boxed{\ x=13/10 } :)[/tex]
My steps:
First thing we do is: Rearrange terms
15−4x=2(3x+1)−4x+15=2(3x+1)Second thing we do is: Distribute
−4x+15=2(3+1)−4x+15=6x+2Third thing we do is : Subtract 15 from both sides of the equation
−4x+15=6x+2−4x+15−15=6x+2−15Then you carry on and find solution:
x=13/10
Hope this help's!
1. Andrea y Margarita decidieron compartir gastos en un apartamento, de manera proporcional a sus sueldos. Si Andrea gana $650.000 y Margarita gana $950.000 y, además los gastos de la casa son de $1’100.000 ¿Cuánto debe aportar cada una?
Answers
500,000 creo yo no sé puede ser
ASAP WHO EVER ANSWERS THIS WILL RECIEVE BRANLIEST
Answers
The ratio of boys to girls is 10:25 in the school
If sample has 20 boys (10x2) then based on ratio it would likely have 50 girls (25x2)
Find the value of r so the line that passes through each pair of points has the given slope.
(1, r), (7, 5), m = 2/3
Answers
Answer:
r = 1
Step-by-step explanation:
slope = change in y / change in x, so:
change in y / change in x = 2/3
5 - r / 7 - 1 = 2/3
5 - r / 6 = 2/3
[tex]\frac{5-r}{6}=\frac{2}{3}[/tex]
now solve this equation.
first, multiply both sides by 6 to get rid of the fraction:
[tex]5 - r = 4[/tex]
subtract 5 from both sides
[tex]-r=-1[/tex]
multiply both sides by -1
[tex]r=1[/tex]
i beg of yall a crown, 5 stars, a heart and a ty comment to answer my questions iv posted on my profile, ill be posting more too.
Answers
Answer:
I would say the answer is $5.00/lb
Have a wonderful day!
1After paying off her two-year loan of $5000, Janice noticed she had paid a total of $5200. Find
out what interest rate they used to charge her during this time.
Enter your answer
Answers
Answer:
2%
Step-by-step explanation:
Interest = Principal x Rate x Time
200 = 5000(2)·r
200/10000 = r
r = 2/100 which is .02 or 2%
The figure is a parallelogram.
True false
Answers
Answer:
Which picture?
Step-by-step explanation:
Also I am guessing false but I don't see the picture
What is the center and radius of this circle? HELP!
Answers
Answer:
Center: at the point (-3, 2)
Radius: 3 units
If 100 soldiers can eat 100 dozen rations in a week, how long will it take 400 soldiers to eat 400 dozen rations?
Answers
Answer:
1 week
Step-by-step explanation:
100 soldiers / 100 dozen = 1 soldier / 1 dozen
400 soldiers / 400 dozen = 1 soldier / 1 dozen
Therefore, it also takes a week for 400 soldiers to eat 400 dozen rations
Where do you see rotation in our lives/world?
Answers
Answer:
There's a rotation in our schedule if things we do everyday.
Step-by-step explanation:
Hope this helps :D
ASAP PLASE HELP AND SHOW WORK
Each choice below describes the lengths of the sides of a triangle. Select all the triangles that must be right triangles.
Triangle a- √3,√4,√5
Triangle b- 3,4,5
triangle c- 2,4,6
Triangle d- √2,√4√6
Answers
Answer:
triangle b and triangle d
Step-by-step explanation:
3^2+4^2=5^2
2+4=6
Answer:
Triangle b- 3,4,5
5²=3²+4²
Triangle d- √2,√4√6
(√6)²=(√2)²+(√4)²
PLEASE HELP!!!!!!! DESPERATE!!!! 20 points!!!!!
It has to be written like a +bi!!!!
Simplify the expression to a + bi form:
√81+√-6-√64+√-150
Answers
Answer:
uno de los 5 mejores deseos para el colegio y para la comunidad educativa en la definición 3 x 6=√57
I need help and show work
Answers
A = 22 x 60 = 1320
B = 60 x 60 = 3600
Hope this helps. I'm not smart ;w;
2^4 (which number is the base)?
Answers
A dolphin jumps out of the water with an initial velocity of 20 feet per
second (assume its starting height is O feet). Use the vertical motion
model, h = - 16t2 + vt +8, where v is the initial velocity in feet per
second and s is the height in feet, to calculate the amount of time the
dolphin is in the air before it hits the water again. Round your answer
to the nearest tenth if necessary.
Time in air: seconds
Answers
Answer:
1.6 Seconds
Step-by-step explanation:
The equation would be h(t)=-16t^2+20t+8 since 20 is the velocity, and once you input that onto a graph the answer of when it hits the ground is 1.569 seconds, so rounded is 1.6 seconds.
1 and 2 I need this before 10 pm please ASAP I need it quick or I get a bad grade
Answers
Answer:
A. 6 feet
B. 38 feet of fencing total
Step-by-step explanation:
a. We are given 78 square feet as the total area that the fence encloses. Given this, we can use the A=l*w to solve for the side lengths.
A=l*w
Plug in known variables and simplify...
Step 1: Subtract 78 from both sides.
x^2+7x−78=78−78
x^2+7x−78=0
Step 2: Factor left side of equation.
(x−6)(x+13)=0
Step 3: Set factors equal to 0.
x−6=0 or x+13=0
x=6 or x=−13
For this case we will need to use the positive value.
so to check the answer, we can plug in 6 for x and check if it will equal 78.
(6+7)(6)
13*6
78
b. now given the value of x, we need to solve for the total amount of fencing by finding the perimeter.
We already know that one side is 6+7 or 13, and the other side is 6, so to find perimeter we use the formula 2l+2w
and solve...
2*13+2*6
26+12
38
Jayson said, "I am thinking of two fractions that when added have a sum of 1." Which fractions could Jayson have been thinking about?
Answers
Answer:
he could have been thinking of 1/2 + 1/2 or 4/8 + 4/8 or maybe 5/10 + 5/10
because 2/2=1 and so does 8/8 and 10/10
Step-by-step explanation:
Which expression is equivalent to 4(2x +3)?
a.4 + 2x + 4 +3
8x + 12
c.8x + 3
d.
4 + 2x + 12
Answers
Answer:
c 8x+3 all you do is multiply 4 and 2 to get 8 and add an x
Write down the solution to these simultaneous equations. y=2x + 1 and y= 0.5x - 2
Answers
Answer:
(-2, -3)
Step-by-step explanation:
y=2x + 1
y= 0.5x - 2
2x+1= 0.5x -2
1.5x= -3
x= -2
y= 2x+ 1
y= 2(-2)+1
y= -3
The solution is (-2,-3)
The solution to the set of simultaneous equations is; (-2, -3)
We are given the equations;
y = 2x + 1 ---(eq 1)
y = 0.5x - 2 ---(eq 2)
subtract eq 2 from eq 1 to get;
0 = 2x - 0.5x + 1 - (-2)
0 = 1.5x + 3
x = -3/1.5
x = -2
Thus;
y = 2(-2) + 1
y = -4 + 1
y = -3
Read more at; https://brainly.com/question/12647791
each side of a square is 3 inches long. A student increases the length of each side by 3 inches. the area of the new square is how many times the area of the original square.
Answers
Answer:
4 times larger
Step-by-step explanation:
3² = 9
(3+3)² = 36
36 is four times larger than 9
Why is it useful to know how much yellow water should be used with 1 ml of blue water?
Help me plz!!
Answers
Answer:
It is very useful because now, we use Diagrams and labels.
Step-by-step explanation:
Answer:
let me see
Step-by-step explanation:
Please only show me the check how you get the check from 1 to 5
Answers
5
Jill built a robot to enter a race at her school. The robot travels 8 meters in 3 seconds.
how many meters can the robot travel in each second?
Answers
Answer:
8 is answer why can't I send
Solve for x, then find the perimeter. You should select TWO answer choices.
18
3x
52
T
12
B
D
V
a
P= 140
x = 6
C
x = 18
d
P= 128
Answers
Answers:
x = 6 and P = 128
=================================================================
Explanation:
The tangents CT and CU are equal to each other. The rule is that tangent segments that meet at a common point are the same length.
Let's solve for x
CT = CU
3x = 18
x = 18/3
x = 6
Because CT = 18, this makes BC = BT+TC = 12+18 = 30
---------------------------
For similar reasoning as mentioned earlier, we can say tangents BT and BV are the same length. This means BV = 12.
Segment CD = 52 and CU = 18, which makes UD = CD-CU = 52-18 = 34
From there, we can say segment DV = 34 also. This leads to BD = BV+VD = 12+34 = 46
Triangle BCD has the three sides
BC = 30CD = 52BD = 46The perimeter is
P = sum of the three sides
P = (side1)+(side2)+(side3)
P = BC + CD + BD
P = 30+52+46
P = 82+46
P = 128
I Need help with this
Answers
Answer:
9 Miles
Step-by-step explanation:
Distance = Speed×Time
12× (45/60)
14. The table below represents an inverse
variation function. What is the constant of
variation?
SHOW ALL WORK !!
Answers
Step-by-step explanation:
Let xy = k, where k is the constant of variation.
By using values of x and y in the table,
we see that (2)(48) = (4)(24) = (12)(8) = 96.
Hence k = 96, which is our answer.
what is 98 = u/7
PLz help
Answers
Answer:
u=686
Step-by-step explanation:
98=u/7
7*98=7*u/7
u=686
