Answer:
Option A, Option D and Option E are correct options.
Step-by-step explanation:
We need to find solutions of the inequality: [tex]2x^2-1>6x[/tex]
We will check the options and see, which options satisfy the inequality.
Option A
x=-4
Put x=-4
[tex]2x^2-1>6x\\2(-4)^2-1>6(-4)\\2(16)-1>-24\\32-1>-24\\31>-24\:\:True[/tex]
So, x=-4 is the solution of inequality.
Option B
x=3
Put x=-3
[tex]2x^2-1>6x\\2(3)^2-1>6(3)\\2(9)-1>18\\18-1>18\\17>18\:\:False[/tex]
So, x=3 is not the solution of inequality.
Option C
x=1
Put x=1
[tex]2x^2-1>6x\\2(1)^2-1>6(1)\\2(1)-1>6\\2-1>6\\1>6\:\:False[/tex]
So, x=1 is not the solution of inequality.
Option D
x=5
Put x=5
[tex]2x^2-1>6x\\2(5)^2-1>6(5)\\2(25)-1>30\\50-1>30\\49>30\:\:True[/tex]
So, x=5 is the solution of inequality.
Option E
x=-2
Put x=-2
[tex]2x^2-1>6x\\2(-2)^2-1>6(-2)\\2(4)-1>-12\\8-1>-12\\7>-12\:\:True[/tex]
So, x=-2 is the solution of inequality.
So, Option A, Option D and Option E are correct options.
Help me with this is pls I’ll give Brainly if correct
Answer:
Alrighty so number one is 5 z (x + 2y), and number two is 13x + 19y - 34z
Tell whether the sequence is arithmetic. If it is, what is the common difference?
-12, -7,-2, 3,...
yes: 5
yes; 8
yes; 3
no
Answer:
yes: 5
Step-by-step explanation:
A bookstore manager marks down the price of older
hardcover books, which originally sell for b dollars, by
34%. What is the sale price of a hardcover book for which
the original price was $47.00?
Answer:
$31.02
Step-by-step explanation:
Find the amount of the discount:
47 x 0.34 = 15.98
Subtract the discount from the original price:
47 - 15.98 = 31.02
Melvin drinks 2 liters of water every day. There are approximately 29.6 milliliters in 1 fluid ounce. Which measurement is closest to the number of fluid ounces in 2 liters?a.67.56 fl ozb.135.0 fl ozc.43.35 fl ozd.112 fl oz
Answer:
A
Step-by-step explanation:
In 2 liters there are 67.628 fluid ounces. 67.56 is the closest to that answer.That is why A is the answer
Please help!!
I really need it
Will mark brainliest
Answer:
The last one and the second one
Step-by-step explanation:
write an equation in point slope form for the line through the given point and given slope ( -7 , 9) ; m = 4/5
i need help with this solve for x -7x+7=2x-11
Answer:
x=2
Step-by-step explanation:
You notice that on the days when you are off from school, you read more. What does this illustrate?
coefficients
causation
relationships
correlation
Answer:
correlation
Step-by-step explanation:
I took the quiz
1. Find the missing angle measure and side length.
В
B
9 ft
48°
A
MZA =
48°)
AC =
С
Answer:
angle A = 84 degrees
AC = 9 ft
Step-by-step explanation:
Please let me know if you want me to add an explanation as to why this is the answer. I can definitely do that, I just wouldn’t want to write it if you don’t want me to :)
A certain SUV typically gets 20 miles to a gallon of gas. If odometer on the car indicates that the car has traveled 68,080 miles, how many gallons of gas has this SUV used?
Answer:
3,404 gallons
Step-by-step explanation:
68,080/20=3,404
what is the slope of the line that passes through the point A (-4,3) and B (-2,-5)
Answer:
-1
Step-by-step explanation:
use the slop intercept formula: y2 - y1 / x2 - x1. -5 is y2, -2 is x2, 3 is y1, and -4 is x1.
(-5 - 3) / (-2 - (-4))
-8 / (-2 + 4)
-8/2
-4
The slope is -4. I hope this helps!
PLEASE HURRY!! Find the inequality represented by the graph
Answer:
The inequality represented by the graph is y > [tex]\frac{1}{2}[/tex] x + 2
Step-by-step explanation:
The form of the linear equation is y = m x + b, where
m is the slope of the lineb is the y-intercept (value y at x = 0)The rule of the slope is m = [tex]\frac{y2-y1}{x2-x1}[/tex] , where
(x1, y1) and (x2, y2) are two points on the lineFrom the given figure
∵ The line passes through points (0, 2) and (2, 3)
∴ x1 = 0 and y1 = 2
∴ x2 = 2 and y2 = 3
→ Substitute them in the rule of the slope above
∵ m = [tex]\frac{3-2}{2-0}[/tex] = [tex]\frac{1}{2}[/tex]
∴ m = [tex]\frac{1}{2}[/tex]
→ b is the value of y at x = 0
∵ At x = 0, y =2
∴ b = 2
→ Substitute the value of m and b in the form of the equation above
∵ y = [tex]\frac{1}{2}[/tex] x + 2
∴ The equation of the line is y = [tex]\frac{1}{2}[/tex] x + 2
∵ The line is dashed
∵ The shaded area is over the line
∴ The sign of inequality is >
→ Replace = in the equation by >
∴ y > [tex]\frac{1}{2}[/tex] x + 2
∴ The inequality represented by the graph is y > [tex]\frac{1}{2}[/tex] x + 2
17. If a + b = c, which of the following statements is true?
A b - c = a
B a - c = b
C c-a = b
D c + b = a.
Answer:
c: c-a = b
.................
Answer:
c ...........................
Guys pls help me?!!!!!! With a.
Answer: I do not comprehend
Step-by-step explanation:
Answer:
I think it is 5.50 not sure but I hope this helps.
Step-by-step explanation:
What is the slope and y intercept of the graph?
Captionless Image slope = 1 y-intercept = 2 slope = 1/2 y-intercept = 2 slope = 2 y-intercept = 1 slope = 2 y-intercept = -2
Answer:
y-intercept = 2
slope = 1
Step-by-step explanation:
each time the graph point goes up 1 over 1 giving you the fraction 1/1 which = 1
if you go straight to the point where the line crosses over the y line you'll see that it passes over 2 that's why the y-intercept is 2
following both of these rules that's how you get the y-intercept of 2 and the slope of 1
Answer:
hey
Step-by-step explanation:
Keshia is having a birthday party . Her mom gave her 30 dollars to purchase items for her birthday she bought 16 hats and 16 bags . Each party has cost 0.70 each and each bag cost 0.35 each . How much did Keisha have left after the purchase
Answer:
$11.20 per hat.
and $5.60 per bag
Keisha has $13.20 left over
Step-by-step explanation:
First, I multiplied .70 by 16 and got 11.20 per hat
Then, I multiplied .35 by 16 and got 5.60 per bag
Lastly, I added 11.20 to 5.60 and got 16.80, and subtracted 16.80 from 30 and got 13.20.....
What is the answer to this question
Kerry walks 3 miles each day. How far will she walk in 7 days?
Answer:
21 so yea give it a like bc why not lolz
helllppppppppppppppppppppppp solve for x
Answer:
X+6 = 36 then find the ans
What is the inequality shown?
will mark brainliest
Answer:
6
Step-by-step explanation:
When you come from -3 to -6 the inequality becomes -6 if you are having troble with this, I should check out an inequality caculator
Need help with math pls help me will mark brainiest.
Answer:
The slope is [tex]\frac{-1}{3}[/tex].
Step-by-step explanation:
Math Vocabulary Values
Vertical Change -1
Horizontal Change 3
Slope [tex]\frac{-1}{3}[/tex]
Solve. (-6 - 4) = (-5) = =
Answer:
the answer is written like this if I'm not wrong (-6-4)=-(5)
Step-by-step explanation:
firt we are going to see if simplification is needed here its not so we will do it like this
--=+
+-=-
so -10=5
10÷5
2 is your answer
Solve for x:
3(x - 2)= -9
I NEED TO KNOW HOW TO DO THE WORK FOR IT!!
PLEASE URGENT WILL GIVE BRAINELES WORK ONLY FOR IT PLS
Answer:
3 × X = 3x
3 × -2 = -6
3x - 6 = -9
-9 + 6 = -3
3x= -3
x= -1
Answer:
x=-1
Step-by-step explanation:
3(x-2)=-9
3x-6=-9
3x-6+6=-9+6
3x=-3
3x = -3
3 3
x=-1
slove this problem with the quadratic equation x^2-22x=75
Answer:
[tex]x=(+-)\sqrt{97}[/tex]
Step-by-step explanation:
the parenthesis with the plus and minus is when the plus is on top and the minus is underneath.
Due in 11 minutes please help me ASAP
Answer: (d)
Step-by-step explanation:
Given
No of tickets sold can be given by the equation
[tex]35x-260>1000[/tex]
Solving inequality
adding 260 on both sides
[tex]35x-260+260>1000+260\\35x>1260[/tex]
Now, divide the inequality by 35
[tex]x>\frac{1260}{35}\\x>36[/tex]
Thus artist need to sell a minimum of 37 tickets to earn more than $1000
Which equation does the graph of the systems of equations solve?
a) -1/3x+1=-2x-4
b) 1/3x+1=-2x-4
c) 1/3x+1=2x-4
d) -1/3x-1=-2x-4
Answer:
We conclude that option 'C' i.e. 1/3x+1=2x-4 is the correct option.
Step-by-step explanation:
From the given graph, it is clear that the two lines meet at the point (3, 2).
In other words,
at x =3, y = 2Thus,
The point of intersection between two lines is:
(x, y) = (3, 2)
Here:
x = 3 is the value of the x-coordinate
y = 2 is the value of the y-coordinate
Now, checking the equation i.e. 1/3x+1=2x-4 to determine whether the equation contains the correct value of x-coordinate or not.
[tex]\frac{1}{3}x+1=2x-4[/tex]
Subtract 1 from both sides
[tex]\frac{1}{3}x+1-1=2x-4-1[/tex]
Simplify
[tex]\frac{1}{3}x=2x-5[/tex]
subtract 2x from both sides
[tex]\frac{1}{3}x-2x=2x-5-2x[/tex]
Simplify
[tex]-\frac{5}{3}x=-5[/tex]
Multiply both sides by 5
[tex]3\left(-\frac{5}{3}x\right)=3\left(-5\right)[/tex]
Simplify
[tex]-5x=-15[/tex]
Divide both sides by -5
[tex]\frac{-5x}{-5}=\frac{-15}{-5}[/tex]
Simplify
[tex]x=3[/tex]
Therefore, the value of x = 3
Conclusion:
We conclude that option 'C' i.e. 1/3x+1=2x-4 is the correct option.
Find the value of x.
(x - 12)
(x + 2)°
(4x - 80)
Answer:
vvvvvvvvvvvvvv
Step-by-step explanation:
Which piece of information is pull prove a parallelogram is not a rectangle
A. The diagonals are congruent
B. Of the angles, 2 measure 100, and 2 measure 80
C. The consecutive angles are supplementary
D. The opposite sides are congruent
Answer:
D. The opposite sides are congruent
Simplify the expression.
2.5x + 4.3x - 5
A: 1.8x - 5
B: 6.8x + 5
C: 8x - 5
D: 11.8x
Answer:
6.8x - 5
Step-by-step explanation:
To answer this question I combined like terms:
(2.5x + 4.3x) - 5
2.5x + 4.3x = 6.8x
Then you add the 5 to the end of the expression:
6.8x - 5
y=(x-2)+1 (convert into slope intercept form)
Answer:
I believe your answer is y=x-1.
Step-by-step explanation:
I hope this helps you!