Answer:
The discriminant is -7
Step-by-step explanation:
The discriminant of a quadratic function/equation(ax^2+bx+c = 0) is calculated as:
[tex]b^2 -4ac[/tex]
Here
b is the co-efficient of x
a is the co-efficient of x^2
and c is the constant
Given equation is:
[tex]-2x^2+5x-4=0[/tex]
Here
a = -2
b = 5
c = -4
Putting the values in the formula for discriminant
[tex]= b^2 - 4ac\\= (5)^2 - 4(-2)(-4)\\= 25 - 32\\=-7[/tex]
As the discriminant is negative, the equation has no real solution.
Hence,
The discriminant is -7
Determine whether each quadrilateral must be a parallelogram & justify your answer.
(0, -15), (-12, 18)
Can some one find the slope
Answer:
use this formula the answer is down below.
[tex]\frac{ysub2-ysub1}{xsub2-xsub1}[/tex]
Step-by-step explanation:
this is y. -15-18= -33
this is x. 0--12 (so in this case you would add 12)
the slope is -33/12
If you mix red and white paint in different ratios, you will get different shades of pink paint. If the ratios are equivalent, the shades of pink will be the same.
Sydney and Maria each mix their own batch of pink paint.
Are their batches the same shade of pink
Answer:
yes
Step-by-step explanation:
and red and 1 white
and you got pink
Please help me very important question.
what is the value of the number in the thousandths place 7.819
Answer:
the value of the number in the thousandths place is 9
Step-by-step explanation:
No calculator!
Find the distance between the points R(0,1) and S(6,3.5)
Answer:
Step-by-step explanation:
=(3)2+(5.5)2‾‾‾‾‾‾‾‾‾‾‾‾√
d=(3)2+(5.5)2
=9+30.25‾‾‾‾‾‾‾‾‾√
d=9+30.25
=3‾√9.25
d=39.25
=6.264982
What is 10x10, please help xd
Answer:
100 lol
Step-by-step explanation:
ty for the points! <3
Answer:
100
Step-by-step explanation:
RIDDLE
81 x 9 = 801. What must you do to make the this equation true?
Answer:
Reverse the numbers and change the 9 as upside down.
18*6 = 108
Hope that helped!!
Will give brainliest find the slope.
Answer:
-1/10 for first one and -4/2 for second one
Step-by-step explanation:
lol can I have brainliest?
Hello!
Okay, so: To find the slope, you can use the slope formula: y2-y1/x2-x1...
Let's begin.
Start by plugging in given values into the formula. We can see from looking at the chart that,
y2 = -2
y1 = 3
x2 = 2
x1 = -8
Those are for set 1. So, Let's plug these values into the slope formula:
-2 - 3/2 - (-8)
Subtract
-5/10
Now divide
-1/2 or -0.5
Okay, now let's move on to Set 2.
Set 2:
We're going to do the exact same thing here that we did earlier. Given from the chart:
y2 = -3
y1 = -1
x2 = -2
x1 = 4
Plug them into the formula:
-3 - (-1) / -2 - 4
Subtract
-2 / -6
Divide
1/3
So, for set 1, the slope is -1/2. For set 2, the slope is 1/3.
Which is equivalent to 3.25%?
0.0325
0.325
32.5
Answer:
0.325
Step-by-step explanation:
Solve each inequality below.
7. -4x < 32
fill in the blank to make an equivalent answer ___:30=3.5
i choose brainliest jus answer the question
Answer:
The width of the rectangle is [tex]\sqrt{35}[/tex] and the length of the rectangle is [tex]2\sqrt{35}[/tex]
Step-by-step explanation:
l = 2w
A = l * w
A = 2w * w
70 = [tex]2w^{2}[/tex]
35 = [tex]w^{2}[/tex]
[tex]\sqrt{35}[/tex] = w
2[tex]\sqrt{35}[/tex] = l
Simplify the given expression below: (2 points) 2 divided by the quantity of 2 plus 5i
Answer: The given expression "2 divided by the quantity of 2 plus 5i" can be translated as 2/(2+5i). Simplifying expressions aim is to simplify it into its simplest form. Since i = √-1 substitute it into the expression.
2/(2+5√-1)
then multiply it by 2-5√-1 on the numerator and denominator and we have
[2(2 - 5√-1)] / [4 - 25(1)]
(4-10√-1)/(-21)
Answer:7
Step-by-step explanation:
-5(3x+6)=-3(4x-2) Solve for x please! Show work to prove your answer.
Answer:
x = -12
Step-by-step explanation:
Try using Symbolab, I use it all the time it gives the correct answer and it gives good explanations.
Select the sentence that represents the equation below.
4x−8=2(2x−3)
Four times a number less than eight is equal to two times the difference of double that same number decreased by three.
Eight less than four times a number is equal to two times the difference of three minus double that same number.
Eight less than four times a number is equal to two times the difference of double that same number decreased by three.
Eight minus four times a number is equal to two times the difference of double that same number minus three.
Answer:
Eight less than four times a number is equal to two times the difference of double that same number decreased by three.
Step-by-step explanation:
The given equation is:
4x−8=2(2x−3)
We will try to translate the given equation in English.
We can see that the variable used is only one. On the left hand side of the equation 8 is being subtracted from 4 times of the variable and on the right hand side 3 is being subtracted from 2 times of variable and then being multiplied by two.
From the given option, correct answer is:
Eight less than four times a number is equal to two times the difference of double that same number decreased by three.
1. Mrs. Rutherford planted flowers in a rectangular garden. The width of the garden is (X-5) feet and the length of the garden is 2 feet longer than the width. Write an
expression for the area of the garden
Answer:
area = 2 + (x-5) * (x-5)
Step-by-step explanation:
area of a rectangle= length * width
length = 2 + (x-5)
width = x-5
Answer:
im not sure
Step-by-step explanation:
um work here
v
Analyze the diagram below and complete the instructions that follow.
3
x
5
7
Find the unknown side length, x. Write your answer in simplest radical form.
A. 4
B. 165
C. 11
D. 5V13
Answer:
the answer is √ 65
Step-by-step explanation:
the length of the line separating the two triangles is 4 ( it was determined using the Pythagoras theorem)
so you'll find the value of x using√(4^2+7^2)
Francisco solo puede cargar 10kg en du maletín y debe llevar 3/2 kg de arroz, 7/4 kg de azúcar y 5/2 kg de frijoles. ¿cual es la máxima cantidad de Karina que se puede llevar?
Answer:
4.25 kg de harina
Step-by-step explanation:
la cantidad total que Francisco puede llevar es 10 kg:
debe llevar 1.5 kg de arrozdebe llevar 1.75 kg de azucardebe llevar 2.5 kg de frijolestotal 5.75 kgEso significa que Francisco puede llevar 10 kg - 5.75 kg = 4.25 kg de harina sin sobrepasar el peso maximo que su maletin y/o el pueden cargar.
Use this diagram and information given to find mangleAFE.
abcdef500
Given: mangleAFB = mangleEFD = 65°
Points B, F, D and points E, F, C are collinear.
The measure of angleAFE is
°.
Since they are collinear, it means the BFD is a straight line and all the angles formed by the lines resting on a straight line add up to [tex]180[/tex] degrees. So, [tex]65 + 65 + x = 180[/tex]
When we add [tex]65[/tex] and [tex]65[/tex] we get [tex]130[/tex]. So,
[tex]130 + x = 180\\\\x = 180 - 130 = 50\\[/tex]
Henceforth, [tex]x[/tex] or angle [tex]AFE[/tex] is equal to [tex]50[/tex] degrees. :D
WILL GIVE BRAINLIEST IF CORRECT
Given the following vectors in component form: r= (2,3) s= (5,-3) t= (-8,6) Check all expressions whose sum represents the same vector as (r+s)+t
Answer:
Step-by-step explanation:
< 7, 0 > + < - 8, 6 >
< 2, 3 > + < - 3, 3 >
< - 6, 9 > + < 5, - 3 >
If r= (2,3) s= (5,-3) t= (-8,6) then (7,0)+(-8,6) ,(2,3)+(-3,3) and (-6,9)+(5,-3) are equal to (r+s)+t
What is vector ?
Vector is a quantity with magnitude and direction .
Given vectors in component form are
r=(2,3) ,s=(5-3) , t =(-8,6)
We can calculate (r+s) as
(2,3)+(5,-3)
=(2+5,3-3)
=(7,0)
Now we can calculate (r+s)+t as
(7,0)+(-8,6)
(7-8,0+6)
(-1,6)
(a)
(0,7)+(-8,6)
=(-8,1)
Not equal to (r+s)+t
(b)
(7,0)+(-8,6)
=(-1,6)
equal to (r+s)+t
(c)
(2,3)+(-3,3)
=(-1,6)
equal to (r+s)+t
(d)
(2,3)+(3,-3)
=(5,0)
Not equal to (r+s)+t
(e)
(-6,9)+(5,-3)
=(-1,6)
equal to (r+s)+t
If r= (2,3) s= (5,-3) t= (-8,6) then (7,0)+(-8,6) ,(2,3)+(-3,3) and (-6,9)+(5,-3) are equal to (r+s)+t
To learn more about vectors visit : https://brainly.com/question/25811261
c = x + a / b solve for the x
Answer:
x= C-a/b
Step-by-step explanation: Ik alllLlLLlllLlLL
(my other account is actingqueen2468 but i forgot my password)
(ASAP) please help with both questions!!!!
i will mark brainliest!!!
Answer:
a||b the first one. A (-2, 0) B (0, -4) C (4, -6) D (2, -2)
Step-by-step explanation:
If you reflect over the y-axis you will change the y in the coordinate. (x, y) If it is positive you will make it negative and if it is negative you will make it positive.
A club has 3 members.From these members, the postitions of presidents and vice president have to be filled in now how many diffrent ways can those 2 posititons be filled
Answer: 3
Step-by-step explanation:
From the question, we are informed that a club has 3 members and that from the members, the postitions of presidents and vice president have to be filled.
The number of diffrent ways that these 2 posititons can be filled will be:
= 3! / 2!
= (3 × 2 × 1 )/(2 × 1)
= 6/2
= 3 ways
PLEASE HELP ASAP!!! i’ll mark brainlyest
Answer:
B
Step-by-step explanation:
How many minutes do you have in every hour? 60 right, so that's the ratio as a fraction saying 60 minutes per hourKaydeen bought a box of chocolates for
$650 and sold it to Acquacia eta
profit of $75. Find the selling price PLEASE HELPP ASAPPP AND PLEASE EXPLAIN OUT THE STEPS !!!!
Answer:
answer is 100 and you write 5hos
I really need help with this please help
Answer:
Y= -5/2x+3
Step-by-step explanation:
first you have to find the slope so y1-y2 over x1-x2:
13- -2 / -4 -2= 15/-6= -5/2
then you plug it into the point slope form which is Y-y1= M(X-x1)
Y- -2= -5/2(X-2)
now solve in order to put it in slope intercept form
Y+2= -5/2x+5= Y= -5/2x+3
Help plz using rational exponents.
Answer:
3. -3
4. 9
5. -5
Step-by-step explanation:
I can’t write radicals but fraction exponents change the number into a radical. Numerator being the power of the number and denominator being the type of root it is.
can someone pls help?
Answer:
41
Step-by-step explanation:
4x +5 = 7x -22
5 = 3x -22
27 = 3x
x = 27/3
x = 9
4(9) + 5 = RS
36+ 5 = RS
RS = 41
Answer:
RS=41
Step-by-step explanation:
Because RT intersects the midpoint of QS, from doing some geometry we know that QRT and SRT are congruent triangles. Thus, RS=RQ because of cpctc
so, we can make the equation:
4x+5=7x-22
simplify
3x=27
x=9
now, plug that into 4x+5, and we get 36+5, or 41. RS=41
A logo is made up of four congruent triangles.
16cm
21cm
Find the perimeter of the logo.
Answer:17cm 5 cm°Step-by-step explanation:
