Hi. Please I need help with these questions.
It's urgent . 50pts.
No jokes. This time
Answer No 12 and 13
Answers
Answer:
Q 12 roots of the equation
[tex]2x^{2} -6+1=0 \\= (x-\frac{\sqrt{10} }{2})(x+\frac{\sqrt{10} }{2})\\[/tex]
∝ = [tex]\frac{\sqrt{10} }{2}[/tex]
β = [tex]-\frac{\sqrt{10} }{2}[/tex]
no matter if u oppose the root
(i) 2([tex]\frac{\sqrt{10} }{2}[/tex])[tex](-\frac{\sqrt{10} }{2} )^{2}[/tex]+2[tex](\frac{\sqrt{10} }{2} )^{2}[/tex]([tex]-\frac{\sqrt{10} }{2}[/tex])+2(
(ii)([tex](\frac{\sqrt{10} }{2})^{2}[/tex] - 3 ([tex]\frac{\sqrt{10} }{2}[/tex])([tex]-\frac{\sqrt{10} }{2}[/tex]) + ([tex](-\frac{\sqrt{10} }{2})^{2}[/tex]) = [tex]\frac{25}{2}[/tex]
Q 13 roots of equation
[tex]4x^{2} -3x-4=0\\\alpha = -0.693\\\beta = 1.443[/tex]
the roots of the second equation are
x1 = 1/3(-0.693) = -0.231
x2 = 1/3(1.443) = 0.481
the equation is
(x+0.231)(x-0.481)=0
[tex]x^{2}-\frac{1}{4} x-\frac{1}{9}[/tex]
Related Questions
hii guys happy chota dipawali
Answers
Answer:
yay thats so coolllllllll
Find the geometric mean of the data below:
2, 5, 7
Answers
Answer:
[tex]\sqrt{70}[/tex]
Step-by-step explanation:
Given data:
2, 5 , 7
The geometric mean is a measure of central tendency of a data set which utilizes the product of their values
To find the geometric mean of the given values;
multiply them togetherfind the square root;Geometric mean = [tex]\sqrt{2 x 5 x 7 }[/tex]
Geometric mean = [tex]\sqrt{70}[/tex]
What is the value of a in the equation a = 2 + 3a + 8? (5 points)
Group of answer choices
5
10
−5
−10
Answers
Step-by-step explanation:
a = 2 + 3a + 8
a = 10 + 3a
a - 3a = 10
-2a = 10
a = -5
Evaluate the expression for f = 20.
122 - 2f
9. Show your work:
A. 82
B. 100
C. 140
D. 2400
SHOW YOUR WORK PLZSSSSSSS
Answers
Answer:
82
Step-by-step explanation:
2(20)=40.
122-40=82.
9-2*x=35
A. -13
B. -22
C. 48
Answers
Answer:
x= -13 (a)
Step-by-step explanation:
-2x=35-9
-2x=26
x=-13
hope this helps x.
Answer:
-13
Step-by-step explanation:
9-2/x=35
9-2/x=35
-2/x=35-9
-2/x=26
-2=26x
26x=-2
x=-1/13
What is the volume of the following rectangular prism?
Answers
Answer:
1/2 * 7/4 = 7/8
Thank you and please rate me as brainliest as it will help me to level up
(Will mark brainliest and give $5 Starbucks digital card Include SC!!!) For which set of triangles can you immediately use the AAS congruence criteria to prove them congruent?(1 point)
1. triangles STU and VWX, where ∠T≅∠W, ∠U≅∠X, and SU≅VX
2. triangles GHI and JKL, where ∠G≅∠J, ∠H≅∠K, and GH≅JK
3. triangles MNO and PQR, where ∠N≅∠Q, MN≅PQ, and NO≅QR
Answers
I'm not so sure about this answer, but i remember doing something similar to this. I think it's 3.
The ratio of red marbles to black marbles is 4:7. If the bag consists of 77 marbles in all, how many red marbles are in the bag?
Answers
Answer:
28:49
Step-by-step explanation:
4:7 is equal to 11 total marbles and if there are 77 you would multiply each number by 7
1/2(x+2)=5(x+2) solve the following completely
Answers
Answer:
X is equalled to '' - 2''
Step-by-step explanation:
If you need an explanation, leave a comment ;) As my hand writing is very messy. I'll write it here if you want.
Cheers! :)
GEOMETRY QUESTION, HELP PLEASEEE.
Answers
Answer:
The pre-image C is (2, 5)
Step-by-step explanation:
If the point (x, y) rotated about the origin by angle 90° clockwise, then its image is (y, -x)If the point (x, y) rotated about the origin by angle 180° clockwise, then its image is (-x, -y)If the point (x, y) rotated about the origin by angle 270° clockwise, then its image is (-y, x)∵ Point C was rotated 270° clockwise around the origin
∵ C' = (-5, 2)
→ By using the 3rd rule above
∵ The image of the point (x, y) is (-y, x)
∴ (-y, x) = (-5, 2)
→ That means -y = -5 and x = 2
∴ x = 2
∴ -y = -5
→ Divide both sides by -1
∴ y = 5
∴ The pre-image C = (2, 5)
What set of numbers is arranged from largest to smallest? (Mind the blue on one of the answers)
Answers
Answer:
B
Step-by-step explanation:
it orders the negative things in the top right correctly because the bigger the negative number in the top right the lower the number is aka the greater of a negative number there is
Hope this helps:)
Please help me ASAP!
Answers
Answer:
angle 4
Step-by-step explanation:
Which equation would intersect the line on the graph at the point (-2,
-2)?
Answers
Answer:
Y = 0x-2.
Step-by-step explanation:
I don't want the question of my teachers being in my b or I am a good time wi and I am
help im being timed what is the area of the rectangle?!
Answers
Answer:
30
Step-by-step explanation:
Hope this helps.
Write the following fractions in order of size
1/3
3/4
1/4
7/12
1/2
Start with the smallest fraction.
Answers
Ans wer 7/12 3/4 1/3 1/2
Step-by-step explanation:
I NEEDA KNOW IF IM RIGHT , IDK HELP
Answers
Answer:
CD and DE are perpendicular because their slopes are -1/3 and 3
Step-by-step explanation:
Perpendicular lines will always have the opposite reciprocal.
Answer correctly please !!!!!!!!!!!!!! Will mark brainliest !!!!!!!!!!!!!!!!!!!!!!
Answers
Combine like terms
6x - 15 = 111
Add 15 to each side.
Evaluate
6x = 126
x = 21
Plug x back into the equation for angle EFG.
EFG = 3x -20
3(21) - 20
EFG = 43 degrees
Answer:
[tex] m\angle EFG =43\degree[/tex]
Step-by-step explanation:
[tex] m\angle EFG +m\angle GFH = m\angle EFH\\\\
(3x-20)\degree + (3x+5)\degree =111\degree \\\\
(3x-20+3x +5)\degree =111\degree \\\\
(6x-15)\degree =111\degree \\\\
(6x-15) =111 \\\\
6x = 111 + 15\\\\
6x = 126\\\\
x = \frac{126}{6}\\\\
x = 21\\\\
m\angle EFG = (3x-20)\degree\\\\
m\angle EFG = (3\times 21-20)\degree\\\\
m\angle EFG = (63-20)\degree\\\\
m\angle EFG =43\degree\\[/tex]
Write an equation of the line that passes through the given point and is parallel to
the given line.
10. (14, 3); 2y - x - 8
Answers
Answer:
y = x - 23
Step-by-step explanation:
When
4a- a x 3a + 7a
is simplified it is equivalent to?
Answers
Answer:
-3a^2+11a
Step-by-step explanation:
Answer:
4a-a×3a+7a
or, 3a×3a+ 7a
or,9a+7a
or,16a
:. a =16
...... help lots of points available (plz answer it)
Answers
Q» 7. A party hat is shaped like a cone. The dimensions of the party hat are shown in the diagram On O 1,017.88 in. O 254.47 in.3 O 84.82 in. 9 in. O 339.29 in. 3 CLEAR ALL 6 in. Which measurement is closest to the volume of the party hat in cubic 2.
Answers
Answer:
The answer is 84.82 in^3
Step-by-step explanation:
what multiples to give you -30 and adds to give you -13
Answers
Answer:
This is impossible
Step-by-step explanation:
But try -10x-3=30 -10+-3=-13
what is the value of this equation below when y=8 and z=8
9y+3z
Answers
Answer:
96
Step-by-step explanation:
Step-by-step explanation:
=9y+3z
=9×8+3×8
=72+24
=96
hope it help u.
Explain the Error
Find the error in the solution, and then solve it correctly.
7x + 21 + 6x = 4
7x + 21 = -2
7x = -23
-23
7
(select) was subtracted from the left side, but (select) was subtracted from the right side. The
Subtraction Property of Equality states that you can subtract the same number from each side and the
equation will remain true. But 6x and 6 are not the same number (unless x is (select)).
X =
Answers
Answer:
Step-by-step explanation:
7x+21+6x=4 combine terms
13x+21=4 subtract 21 from both sides
13x= -17 divide by 13
x= -17/13
Which one is the linear function of x.
I know it is not A or C
Answers
Answer: d
Step-by-step explanation:
(37-4x²+ 3y) x= 2 and y=3
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What’s the answer to this? Thanks!
Answers
Answer:
D
Step-by-step explanation:
I used a triangle calculator I'm not really sure how to calculate it by hand. if the angle of sides 4 and 15 is set to 1 then the min is 11.33 and if the andle of sides 4 and 15 are set to 179 then the max is 18.99952
Sorry if this isnt enough, but i am sure.
Answer:
D. 11 < x < 19.
Step-by-step explanation:
The third side x is between 11 and 19 cm.
Consider sides AB (length 4) and BC (length 15) of the triangle.
Consider the angle between AB and BC is slightly less than 180 degrees. To get from point A to point C, we have to travel almost the entire length of A to C, which is from A to B and then B to C, so a bit less than 19 cm.
Consider the angle between AB and BC is slightly more than 0 degrees. To get from point A to point C, we subtract the length of AB (because we're already further along BC), so 15 - 4, a bit greater than 11.
5. Select ALL of the following expressions that are linear functions (they do not need to be in slope-intercept form).
y2 = 5x +2
2x + 4 = 3x - 8
y = 3x - 2
y + x2 = 12
y = x2 + 2x
1
3x + -y = 24
Answers
Answer:
The following are the LINEAR functions.
[tex]2x\:+\:4\:=\:3x\:-\:8[/tex][tex]y = 3x - 2[/tex][tex]1[/tex][tex]3x\:+\:-y\:=\:24[/tex]Step-by-step explanation:
We know that linear functions are the equations with a straight line graph in an XY plane.
Also, a linear function is a function of the form
[tex]f(x)=mx+b[/tex]
where m is the slope and b is the y-intercept. The only power of the variable is 1.
So, from the given expressions we can determine that:
1) [tex]y^2=\:5x\:+2[/tex]
[tex]y^2=\:5x\:+2[/tex] is NOT a linear function because the power of y is 2, hence the graph won't be a straight line. Therefore, it is not a linear function
2) [tex]2x\:+\:4\:=\:3x\:-\:8[/tex]
[tex]2x\:+\:4\:=\:3x\:-\:8[/tex]
[tex]x=12[/tex]
This is a linear equation is an equation of a straight line, written in one variable. The only power of the variable is 1
3) [tex]y = 3x - 2[/tex]
[tex]y = 3x - 2[/tex] is a linear function because it is of the form [tex]f(x)=mx+b[/tex] and the power of its x and y variables is 1. Hence, the function has a straight line graph.
4) [tex]y\:+\:x^2\:=\:12[/tex]
[tex]y\:+\:x^2\:=\:12[/tex] is NOT a linear function because the power of x is 2, hence the graph won't be a straight line. Therefore, it is not a linear function.
5) [tex]y\:=\:x^2\:+\:2x[/tex]
[tex]y\:=\:x^2\:+\:2x[/tex] is NOT a linear function because the power of x is 2, hence the graph won't be a straight line. Therefore, it is not a linear function.
6) [tex]1[/tex]
[tex]1[/tex] is a constant function and a constant function is also considered linear in this context, as it is a polynomial of degree [tex]0[/tex] or is the [tex]0[/tex] polynomial.
7) [tex]3x\:+\:-y\:=\:24[/tex]
[tex]3x\:+\:-y\:=\:24[/tex] is a linear function as the power of its x and y variables is 1. Hence, the function has a straight line graph. Therefore, it is a linear function.
In a summary, the following are the LINEAR functions.
[tex]2x\:+\:4\:=\:3x\:-\:8[/tex][tex]y = 3x - 2[/tex][tex]1[/tex][tex]3x\:+\:-y\:=\:24[/tex]25 POINTS!! which point is a solution to the inequality shown in this graph 3,-1 -3,-3
Answers
Answer:
(3, 3)
Step-by-step explanation:
Answer:
Step-by-step explanation:
i think its (3,-1)
how do i solve -3=-2x+1 by graphing?
Answers
Answer:
x = 2
Step-by-step explanation:
-3 = -2x + 1
minus 1 to the both sides
-3 -1 = -2x
-4 = -2x
divide both sides by -2
x = 2