Answer:
The answer is 84.
Step-by-step explanation:
The given equation is
4x*2 + 2x -5 = 0
Here a= 4, b= 2, c= -5
Since Discriminant= b*2 -4ac
Putting values
Discriminant= (2)*2 - 4(4)(-5)
= 4 + 80
= 84
Since our Discriminant(84) is >0 and is not a perfect square so the roots of the given equation are unequal and irrational(real).
Out of 1800 flags, 36 are purple. What percent of the flags are not purple?
Answer:
2% are purple
Step-by-step explanation:
36/1800 = 0.02 = 2%
Answer:
I think...
its 98% of the flags that are NOT purple
Step-by-step explanation:
36 of 1800 is 2%
PLEASE HELPPPPP
M=2
N=16
P=1/3
Answer:
4
Step-by-step explanation:
Based on the information you have given me, p = 1/3.
All we need to do is substitute that value into the expression:
12p = 12(1/3) = 4
Which graph shows the system 1 x++y=2 ? [x2 + y2 =9
Answer:
The graph of the system in the attached figure
Step-by-step explanation:
we have
isolate the variable y
----> equation A
This is the equation of a vertical parabola open down (because the leading coefficient is negative)
The vertex represent a maximum
the vertex is the point (0,2)
---> equation B
This is the equation of a circle centered at (0,0) with radius 3 units
The solution of the system of equations is the intersection points both graphs
using a graphing tool
The solutions are the points (-2.05,-2.19) and (2.05,-2.19)
see the attached figure
Answer:
It's C!
Step-by-step explanation:
Just got it right :>
Please help me :))!!!! it’s pass due lolololol
Use the Law of Sines to find the value of ZA.
С
25
28
62°
B
А
Please help !!!!!!!!!!!!
Answer:
90 degrees
Step-by-step explanation:
Make
x
the subject of the formula
x
−
3
=
q
Answer:
x = q + 3
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightEquality Properties
Step-by-step explanation:
Step 1: Define Equation
x - 3 = q
Step 2: Solve for x
Add 3 to both sides: x = q + 35 + 2z/3 + 1 what is this? please help
Answer:
Solution
6+2/3
Step-by-step explanation:
The graph shown below suggests:
A. a negative correlation.
B. no correlation
C. a weak correlation.
D. a positive correlation.
Answer:
B. no correlation
Step-by-step explanation:
Next week the store is going to reduce the price from $42 to $31.50. Calculate what percent the sale price is of retail price.
Answer:
13.23 is 31.50 percent of 42 and the price they dropped down was $10.5
Step-by-step explanation:
hope this helps pls mark me as brainliest! :)
Answer:
10.5
Step-by-step explanation:
CUZ I NO
Explain what opposing position means.
Answer:
to fight against, counter, or resist strongly. to be hostile or antagonistic to; be against. to place or set in opposition; contrast or counterbalance. to place opposite or facing. to be or act in opposition
Answer:
Opposition (noun) The apparent relative of 2 celestial bodies when one is at angle of 180 degrees from the other as seen from the earth
I NEED ANSWER QUICK. Will give brainliest
Answer:
A
Step-by-step explanation:
Both of them Equal 4
Solve each system by elimination.
1) 6x - y=-14
-2x + y = 6
Answer:
(-2, 2)
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightEquality Properties
Algebra I
Solving systems of equations using substitution/eliminationStep-by-step explanation:
Step 1: Define Systems
6x - y = -14
-2x + y = 6
Step 2: Solve for x
Elimination
Combine 2 equations: 4x = -8Divide 4 on both sides: x = -2Step 3: Solve for y
Define equation: -2x + y = 6Substitute in x: -2(-2) + y = 6Multiply: 4 + y = 6Isolate y: y = 2Plssssssssssssssssssssssssss
Answer:
9
Step-by-step explanation:
1/9(9^2)
1/9(81)
9
(4x + 3)(x + 1) = 1
What is the solution set?
Answer:
Step-by-step explanation:
4x^2 + 7x + 3 = 1
4x^2 + 7x + 4 = 0
-7 ± [tex]\sqrt{49 -64}[/tex]
------------------
8
(Sorry, first time making complex equations)
-7 ± [tex]\sqrt{-15}[/tex]
-------------
8
The estimated world population in the year 1650 was 550,000,000. The estimated
world population in 1750 was 725,000,000. By how many people did the world's
population increase between 1650 and 1750?
Answer:
175,000,000
Step-by-step explanation:
you subtract 550,000,000 from 725,000,000
Solve for c in the equation a=b-c/c
Answer:
[tex]a = \frac{(b - c)}{c} \\ ac = (b - c) \\ ac + c = b \\ c(a + 1) = b \\ c = \frac{b}{(a + 1)} [/tex]
hope this helps.
simplify that expression pls
Please help me with this math question asap. I will mark brainliest Thank you so much! Question 4/5
Answer:
So... This is it
1. JK = LM, JKM = LMK -> This is given information.
- From this given information, we know:
1. 2 congruent sides
2. 2 congruent angles
Now all we have to do is find one more side to prove SAS triangle congruence.
Next, we notice that the side MK is used by both the triangles we are trying to prove congruent. So we can say "MK = MK" by the reflexive property. (Since they share the same side).
Then, we can say triangle JMK is = triangle LKM because of SAS congruence.
*Please note the = signs I used should be actually congruence signs*
Carmen reads 2/3 chapters in 7/8 hours. What is the unit rate in chapters per hour?
Write your answer in simplest form.
Answer:
16/21
Step-by-step explanation:
Divide both sides by 7 to get 1/8
2/3 = 7/8
1/7 x 2/3 = 7/8 x 1/7
2/21 = 1/8
Then multiply both sides by 8 to get 8/8 which is 1
8/1 x 2/21 = 1/8 x 8/1
16/21 = 1
Five girls are sitting in a row. Ruhi is sitting on the extreme left & adjacent to Khushi. Tina and Khushi are not sitting together. Sinu and Pihu are sitting Togther but Sinu is
not sitting next to Tina. Who are sitting at extreme ends of the row
A. Khushi and Pihu
B. Ruhi and Tina
C. Ruhi and Sinu
D. Pihu and Tina
what’s the scale factor ?
=======================================================
Explanation:
The vertical side of the blue triangle is PR = 2
The corresponding vertical side of the green triangle is P'R' = 4
The scale factor is the ratio of those two corresponding sides. So we divide the two side lengths.
scale factor = (P'R')/(PR) = (4)/(2) = 2
---------------------
We could also say:
scale factor = (R'Q')/(RQ) = (6)/(3) = 2
Or you could find the lengths of PQ and P'Q' through the distance formula, or Pythagorean theorem, and apply the same idea as shown above.
b is inversely proportional to a When a = 4 , b = 6 Determine the value of b when a = 8
Answer:
3
Step-by-step explanation:
b is inversely proportional to a, that means when ne increases the other decreases. 4 times 6 is 24
so when is 8, b is 24/8 which is 3
a motor bike travels 240 km in 4 hours. How long will it take to travel 450 km
Answer:
7 hours and 30 minutes
Step-by-step explanation:
[tex]240 \div 4 = 60km \: per \: h[/tex]
[tex]450 \div 60 = 7.5 = 7h \: 30min[/tex]
It will take motor bike 7.5 hours to cover 450 Km of distance.
What is Speed in Kinematics?Speed of a body is defined as the distance travelled by it per unit time taken to cover the distance.
Mathematically-
S = Δd/Δt or S = {d(2) - d(1)}/{t(2) - t(1)}
It is a scalar quantity as it only has magnitude and no direction.
Given is a motor bike travels 240 km ins 4 hours.
We can calculate the speed of the bike as -
s = 240/4 = 60 Km/hr
Then, the time taken to cover 450 Km will be -
t = 450/60
t = 7.5 hours
Therefore, it will take motor bike 7.5 hours to cover 450 Km of distance.
To solve more questions on Kinematics, visit the link below-brainly.com/question/17053454
#SPJ2
Here is a rectangle ABCD.
A
B
20 cm
D
30 cm
The length of the rectangle is increased by 10%.
The width of the rectangle is increased by 5%.
Find the percentage increase in the perimeter of the rectangle.
answer
15.5%
Step-by-step explanation:
length = 30
30+10%=33
breadth=20
20+5%=21
area of rectangle = length × breadth
600² centimeters = 30 × 20
693² centimeters = 33 × 21
Increase = 15.5%
3, 6, 9, 12
Which number is not like the others? Justify your choice.
Answer:
12
Step-by-step explanation:
12 is a two digit #
Answer:
first of all there are many ways to compare numbers. example
the digit they havethe pattern they havethere amountI don't know how to compare them but I try my best
Step-by-step explanation:
the first 3 numbers have only one digit but the 4th has 2 digits.but it in my opinion you don't want this answer.
so this is not the reason
3 have 2 factor
6 have 4 factor
9 have 3 factor
12 have 5 factors
so as the number increase the factors should increase but 9 has less factors than 6 .so I think 9 is the different one
Urgent please help, will give brainliest
in right angle traingle two angle are equal
so.x=y
in triangle
x+y+90=180(sum of interior angle of triangle)
2x=180-90
x=90/3=45°
Brenda buys a shirt for $40. She has a coupon for 25% off. What is 25% of $40?
Answer:
Step-by-step explanation: hehejejehjejejehehhejehehejehehheehejhehejehejejejejejjejejejejejhhehejejjejejejeejehhehehe
Answer:
$10
Step-by-step explanation:
40 X .25 = 10
One equation in a system of equations is y=4x-5 write a second equation to complete the system if the solution to the system is (3,7) PLSSS BE QUICK :))
Answer:
4y = -x + 31
Step-by-step explanation:
Given that one equation in a system of equations is y = 4x - 5 write a second equation to complete the system if the solution to the system is (3,7)
Since the solution of the system is (3, 7), that means the two lines of equations meet or intersect at point X = 3 and Y = 7
Let assume that the two equations are perpendicular to each other. Then, there slope can be expressed as
M1M2 = -1
Where M1 = 4
Find M2
4M2 = -1
M2 = -1 / 4
Using general linear equation
Y = MX + C
Let's find C by substituting Y, X and M2
7 = -1 /4( 3 ) + C
7 = -3/4 + C
C = 7 + 3/4
C = 31/4
Substitute C back into the equation
Y = -1/4X + 31/4
4y = -x + 31
Therefore, the second equation is
4y = -x + 31
I have lakes with no water, mountains with no stone and cities with no buildings. What am I?
Answer:
map
Step-by-step explanation: