Answer:
its B on edg2020
brainlest please
The correct substitution for the formula is a = 3,b= -2 and c=0.
What is a quadratic equation?
It is a polynomial with a degree of 2 or the maximum power of the variable is 2 in quadratic equations. It has two solutions as its maximum power is 2.
The given quadratic equation is,
1 = –2x + 3x² + 1
3x²-2x + 0 = 0
The formula is,
[tex]x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}[/tex]
The standard form of the quadratic equation is,
ax² + bx + c = 0
Compare the equation with the standard equation.
a = 3
b = -2
c = 0
Therefore, the correct substitution for the formula is a = 3,b= -2 and c=0.
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a chord of 12cm long of 8cm is away from the of the circle what is the lenght of the chord which is 6cm away from the centre
Answer:
The length of the chord is 16 cm
Step-by-step explanation:
Mathematically, a line from the center of the circle to a chord divides the chord into 2 equal portions
From the first part of the question, we can get the radius of the circle
The radius form the hypotenuse, the two-portions of the chord (12/2 = 6 cm) and the distance from the center to the chord forms the other side of the triangle
Thus, by Pythagoras’ theorem; the square of the hypotenuse equals the sum of the squares of the two other sides
Thus,
r^2 = 8^2 + 6^2
r^2= 64 + 36
r^2 = 100
r = 10 cm
Now, we want to get a chord length which is 6 cm away from the circle center
let the half-portion that forms the right triangle be c
Using Pythagoras’ theorem;
10^2 = 6^2 + c^2
c^2 = 100-36
c^2 = 64
c = 8
The full
length of the chord is 2 * 8 = 16 cm
What travels in a pack but people say its alone
Answer:
A wolf?
Step-by-step explanation:
y'know like "lone wolf"
Answer:
A stamp, or a Dog.
Step-by-step explanation:
A stamp usually doesn't move, but goes to places.
A wolf is pity and people call them alone.
YES, I have no idea this is just a lucky guess lol
1. Candace has $15 more than Amar. Their combined money totals $85. Which system of equations represents this situation? F. c + a = 85 G. c + a = 85 H. c – a = 85 I. c – a = 85 c – a = 15 a + c = 15 c – a = 15 c + a = 15 Also please show explanation
The system of equations that represents Candace's and Amar's combined money is c + a = 85.
What is a linear equation?
A linear equation is an algebraic equation of degree one. In general, the variable or the variables(in the case of a linear equation in two variables) the variables are x and y.
Given, Candace has $15 more than Amar.
Assuming Amar has $a.
∴ Candace(c) has $(x + 15).
Their combined money totals $85.
So, the equation that represents their combined money is
x + (x + 15) = 85 or a + c = 85.
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the marked price is 180. the rate of discount is 30% percent what is the discount and sale price?
Answer:
150
Step-by-step explanation:
i think if its wrong im
What should be done to these equations in order to solve a system of equations by elimination?
-3x+2y=16
2x+5y=21
A. Nothing needs to be done, since they both equal have 2’s and 3’s for coefficients.
B. Multiply the first equation by 3 and the second equations by 2.
C. Multiply the first equation by 2 and the second equation by 3.
D. Multiply the first equation by 3.
Answer:
The answer is C.
Step-by-step explanation:
I did the test and got it right. :)
The correct is C = Multiply the first equation by 2 and the second equation by 3.
What is system of equations by elimination?The elimination method exists utilized to solve a system of linear equations. It is the most widely used and simple method as it concerns fewer calculations and steps. In this manner, we eliminate one of the two variables and test to solve equations with one variable.
if we'll multiply the first equation by 2 and second by 3 we will be able to solve the equation by elimination.
(-3x+2y=16) X 2 = -6x + 4y = 32
(2x+5y=21) X 3 = 6x + 15y = 63
the coeffients of x gets cancelled out on adding the new equations
4y+ 15y = 32+ 63
19y = 95
y= 95/19
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Help!!
This assignment is due soon
Step-by-step explanation:
1) option d) (x+y)√3
2)option c) 0
MARK ME AS BRAINLIEST✅✅
Melissa can ride her skateboard 2 miles in 10 minutes. How many miles can she ride her skateboard in 1.5 hours?
Answer:
18 miles
Step-by-step explanation:
1.5 hours is 90 minutes
10 goes into 90 nine times,
2x9=18
Find the slope of the line that passes theough the points (1,-4) and (3,-1
Answer:
2/3
Step-by-step explanation:
So find the change in x first....1 + 2 = 3....so, change in x is +2
Next find the change in y....-4 + 3 = -1....so, change in y is +3
Slope equals change in y/ change in x
So, the slope is 2/3
Hope this helps :D
What is the next term in the arithmetic sequence below?
15, 8, 1, -6, ...
0 -15
0 -13
0 -12
0 1
HELP PLEASE
Answer:
-13
Step-by-step explanation:
Help me please I need it
Answer:
D. 11
Step-by-step explanation:
Add all the numbers and divide by 4
Solve the simultaneous equations
5y−4x=8
y+x=7
x= ?
y= ?
Answer:
x=3 y=4
Step-by-step explanation:
5(4)=20
4(3)= 12
20-12=8
4+3=7
Find the distance between (-5,4) (6,-3) work shown?
Answer:
[tex]\sqrt{170}[/tex]
Step-by-step explanation:
(x2 - x1)^2 + (y2-y1)^2 = c^2
(6 - - 5)^2 + (-3 - 4)^2 = c^2
121 + 49 = c^2
170 = c^2
[tex]\sqrt{170}[/tex] which is about 13.04
(A journey by bus takes 45 minutes at 60 km per hour. How fast must a car go to do the same
journey in 25 minutes? plzz answerr!!!
Answer:
The car must drive at 108 km/h to cover the same journey.
Step-by-step explanation:
Given that:
Time taken by bus journey = 45 minutes = [tex]\frac{45}{60} = 0.75\ hour[/tex]
Speed of bus = 60 km/h
Distance of the journey = Speed * Time
Distance of the journey = 60 * 0.75 = 45 km
The car needs to cover 45 km in 25 minutes.
25 minutes = [tex]\frac{25}{60}\ hour[/tex]
Distance = Speed * Time
45 = [tex]\frac{25}{60}*Speed[/tex]
Speed = [tex]45*\frac{60}{25}[/tex]
Speed = 108 km/h
Hence,
The car must drive at 108 km/h to cover the same journey.
12+36÷ (6^2÷ 3^2)
??????
Given:
The expression is
[tex]12+36\div(6^2\div 3^2)[/tex]
To find:
The value of the expression.
Solution:
BODMAS: Brackets, orders, division, multiplication, addition and subtraction.
We have,
[tex]12+36\div(6^2\div 3^2)[/tex]
Using BODMAS, first solve the brackets.
[tex]=12+36\div(36\div 9)[/tex]
[tex]=12+36\div(4)[/tex]
Now, divide.
[tex]=12+9[/tex]
Now, add.
[tex]=21[/tex]
Therefore, the value of given expression is 21.
What is the area of rectangle ABCD?
Answer:
8 sq. units
Step-by-step explanation:
Length of AD= BC= 4 units
length of CD= AB= 2 units
Area of Rectangle ABCD = LENGTH× BREADTH
= 4×2= 8 sq. units
De un deposito de agua lleno se sacaron 5/8 de su contenido.
despues saco la 6ta parte de lo que quedo. Calcula que parte le queda al deposito si su capacidad era de 80 litros cuantos litros de agua le sacaron?
help due in 20 minuites i will mark brainliestt
Answer:
A.
Step-by-step explanation:
take 17 *3/4 and get 12.75 which is 12 3/4 as a fraction
There are 16 cats and 14 dogs in a local animal shelter.
Which phrase describes a ratio relationship between the two quantities?
40 pointts
the number of dogs in the shelter compared to the number of cats in the shelter
the number of cats in the shelter compared to the number of dogs in the neighborhood
the number of dogs in the shelter compared to the number of rabbits in the shelter
the number of cats in the shelter compared to the number of cats in the shelter
Answer:
The number of dogs in the shelter compared to the number of dogs in the shelter.
Step-by-step explanation:
Answer:
The number of dogs in the shelter compared to the number of dogs in the shelter.
Step-by-step explanation:
I took the test
Quick please! Which best describes the triangle? 1.Acute and isosceles 2.Acute and scalene 3. Right isosceles 4.Obtuse and isosceles? :(((
Answer:
hey there!!!
Step-by-step explanation:
i think the best option is acute and isosceles from my view
hope it helps you...
The ratio of adults to kids in a school is 3 : 7. If there is a total of 200 people, how many of them are adults?
1 point
HURRY I NEED TO YK QUICK
Answer:
60 adults
Step-by-step explanation:
if you incress it all using cool math you get
3:7
6:14
whitch leads to 45:105
60:140
add 60 and 140 and you get 200
if y=10 and x=2 what is the constant of variation (k)?
Answer:
5
Step-by-step explanation:
hope this helps
A stamp collector has 1,200 stamps, and 65% of them were produced after the year 2000. How many stamps were produced after the year 2000?
Answer:
780
Step-by-step explanation:
65% of 1,200 is 780 :)
Answer:
780
Step-by-step explanation:
65% x 1,200 = 780
Increase £300 by 10%
Answer:
hi theanswer is £30
Step-by-step explanation:
to find ten percent you need to in this case take away the end 0 and your answer will be £30
HOPE IT HELPS YOU PLEASE MARK AS BRAINLIESTWHaTs 2+2 (DONT READ THE REST OR CLICK IT U haVE BEEN WARNED) was a 52 years old man who died in his sleep every time you bring up his name or say his name he will haunt you in your sleep or even when your awake he eats people and if you see this photo he will be summoned so be warned spread the word
Answer:
wat
Step-by-step explanation:
-25p – 2 = 48 for p.
A. -2
B. 1
C. 3
D. 8
Answer:
i would be -2
Step-by-step explanation:
-25p-2=48
+2 +2
-25p=50
p=-2
Answer:
-2
Step-by-step explanation:
Add 2 to both sides
-25p = 50
Divide both sides by -25
p = -2
−3x−6+(−1) equivalent
Answer:
-3x-7
Step-by-step explanation:
Combine Like Terms:
=−3x+−6+−1
=(−3x)+(−6+−1)
=−3x+−7
Can someone please please help me I really need help it’s one question
Answer:
28, 29, 31, 32
Step-by-step explanation:
the number of workers he normally has + the number of extra workers he hires for harvesting = total number of employees
so 26+b=c
What is the measure of AX
Answer:
B.) 9 in.
Step-by-step explanation:
a^2 + b^2 = c^2
a^2 + 12^2 = 15^2
a^2 + 144 = 225
a^2 = 225 - 144
a^2 = 81
√a^2 = √81
a = 9
help please! bdqksdc
Answer:
yes
Step-by-step explanation:
2 is 2/3 of 3
60 is 2/3 of 90
so on...
Find the measure of angle DFC
