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3 years ago

Please help! will give brainiliest!

Mathematics

2 answers:

ra1l [238]3 years ago

6 0

Answer:

y = -1

y = 1

y = 3

y = 5

y = 7

y = 9

y = 11

Step-by-step explanation:

IRISSAK [1]3 years ago

3 0

Answer:

y=-1, y=1, y=3, y=5, y=7, y=9, y=11

Step-by-step explanation:

Given Equation: y=2x+5

Substitute x with the given x-values:

y=2(-3)+5=-6+5=-1

y=2(-2)+5=-4+5=1

y=2(-1)+5=-2+5=3

y=2(0)+5=0+5=5

y=2(1)+5=2+5=7

y=2(2)+5=4+5=9

y=2(3)+5=6+5=11

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Solve with completing the square method:<br>6x²-7x+2=0 and ax²+bx+c=0

Norma-Jean [14]

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4 years ago

Use the discriminant to find the number and type of solution for x^2+6x=-9

likoan [24]

Answer:

D = 0; one real root

Step-by-step explanation:

Discriminant Formula:

$\displaystyle \large{D = {b}^{2} - 4ac}$

First, arrange the expression or equation in ax^2+bx+c = 0.

$\displaystyle \large{ {x}^{2} + 6x = - 9}$

Add both sides by 9.

$\displaystyle \large{ {x}^{2} + 6x + 9 = - 9 + 9} \\ \displaystyle \large{ {x}^{2} + 6x + 9 = 0}$

Compare the coefficients so we can substitute in the formula.

$\displaystyle \large{a {x}^{2} + bx + c = {x}^{2} + 6x + 9 }$

a = 1
b = 6
c = 9

Substitute a = 1, b = 6 and c = 9 in the formula.

$\displaystyle \large{D = {6}^{2} - 4(1)(9)} \\ \displaystyle \large{D = 36 - 36} \\ \displaystyle \large{D = 0}$

Since D = 0, the type of solution is one real root.

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3 years ago

What is the value of x in the equation 3x + 2 = 5x - 8?

katrin2010 [14]

Answer:5

Step-by-step explanation:

3(5)+2=17

5(5)-8=17

X=5

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2 years ago

Which of the expressions below can be factor using the difference of squares method

Law Incorporation [45]

25x^2 - 64y^2

The first thing you can do is look for a subtraction sign. The word difference implies subtraction, so you can rule out any expressions that add terms. Secondly, you can look for squares. 17x^2 - 23y^2 is a subtraction expression, but 17 and 23 are not squares. However, 25x^2 - 64x^2 is a subtraction expression and its terms are squares. 25 = 5x5, 64 = 8x8. Hope this helps!

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4 years ago

If the discriminant of a quadratic equation is equal to -9, which statement describes the roots?

Mice21 [21]

ANSWER

No real roots.

The roots are complex or imaginary.

EXPLANATION

The quadratic equation

$a {x}^{2} + bx + c = 0$

has discriminant,

$D = {b}^{2} - 4ac$

If the discriminant is less than zero , then the quadratic equation has no real roots.

The given discriminant is -9.

Since -9 is less than zero, it means the quadratic equation has complex or imaginary roots.

8 0

3 years ago

Please help! will give brainiliest!​

Please help! will give brainiliest!