2x2 + 6x + 5 = 0 what are the real roots for the quadratic equation
Answers
NO REAL ROOTS
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Find the missing coordinate to complete the ordered-pair solution to the given linear equation: A) y+6x=5 (a) (-1,?) (b) (3,?) B) 3x+2y=-6 (a) (-2,?) (b) (?,3) C) 2x+1/3y=5 (a) (?,18) (b) (8/3,?)
A student is trying to solve the set of two equations given below:Equation A: x + z = 6 Equation B: 2x + 4z = 1 Which of the following is a possible step used in eliminating the z-term? Multiply equation B by 4. Multiply equation A by 2. Multiply equation A by –4. Multiply equation B by 2.
What is the slope of the line represented by the equation 4x+3y=12
An investment club invested part of $8000 at 10% annual interest the rest at 12%. If the annual income from these investments is $900, how much was invested at each rate
Answers
Answer:
(x^2+8) ( y+4)
Step-by-step explanation:
x^2y + 8y+ 4x^2 +32
Splitting into two groups
x^2y + 8y+ 4x^2 +32
Factor y out of the first group and 4 out of the second group
y( x^2+8) + 4(x^2+8)
Factor out (x^2+8)
(x^2+8) ( y+4)
Answer:
(x^2+4)(y+3)
Step-by-step explanation:
x^2y+4y+3x^2+12
factor by grouping
=x^2y+4y + 3x^2+12
left. right
take common in left y and in right 3
=y(x^2+4) + 3(x^2+4)
now common term is (x^2+4)
=(x^2+4) (y+3) answer
B.f(x) = (x – 4)2 + 0
C.f(x) = (x + 8)2 – 72
D.f(x) = (x + 4)2 – 32
Answers
I'll rearrange it using y and x.
y = x² - 16x + 8
y - 8 = x² - 16x
y - 8 + 64 = x² - 16x + 64
y + 56 = (x-8)²
y = (x-8)² - 56
(x - 8)(x - 8) = x(x-8) - 8(x-8) = x² - 8x -8x + 64 = x² - 16x + 64
Choice A.) f(x) = (x-8)² - 56
By completing the square, the function in vertexform f(x) = (x - 8)² - 56 is equivalent to the function in standardform f(x) = x² + 8 - 16 · x. (Correct choice: A)
How to determine the vertex of the quadratic function by algebraic means
In this question we must transform a quadraticfunction in standardform into vertexform. An analytical approach is completing the square, which consists in transforming part of the polynomial into a perfect squaretrinomial. Now we proceed to present the procedure:
1) x² + 8 - 16 · x Given
2) x² - 16 · x + 8 Commutative property
3) x² - 16 · x + 64 - 56 Modulative property/Existence of additive inverse/Definition of addition
4) (x - 8)² - 56 Associative property/Perfect square trinomial/Result
By completing the square, the function in vertexform f(x) = (x - 8)² - 56 is equivalent to the function in standardform f(x) = x² + 8 - 16 · x. (Correct choice: A)
To learn more on quadratic functions: brainly.com/question/5975436
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4x + 5 = 25
Answers
The value of x of equation 4x + 5 = 25 is 5.
What is linear equation?
A linear equation is defined as an equation in which the highest power of the variable is always one.
Given,
4x + 5 = 25
First subtract 5 from both sides,
4x + 5-5 = 25-5
4x=20
Now divide both sides by 4,
x=5
Hence, the value of x of equation 4x + 5 = 25 is 5.
Learn more about linear equation
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4x=20
Now divide both sides by 4.
x=5
Answers
Answer:
CDB
Step-by-step explanation:
in this problem, it goes in order from one dash, no dash, 2 dashes. So, just follow the pattern it gives you.
Answers
Congruent means exactly equal in size and shape. Congruent angles have the exact same measure.
Two figures are similar when its corresponding angles have the same exact measure.
the answer is congruent. I just took the quiz and I got it right hope this helps!
Answers
irst person is 5 hours to do all room
therefor
1 hour=1/5 room
2nd person takes 8 hours to do all room
therefor
1 hour=1/8 room
since working together, add times
1 hour=1/5+1/8
make denoms same
1hour=8/40+5/40=13/40
13/40 room times x hours=1 whole room
multiply both sides by 40/13 to cleaf raction (13/40 times 40/13=520/520=1)
xhours=40/13hours
xhours=3 and 1/13 hours