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3 years ago

Use the Quadratic Formula to solve the equation x^2 - 6x = – 18.

Mathematics

1 answer:

Naya [18.7K]3 years ago

8 0

Answer:

x=3±3i

Step-by-step explanation:

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Solve for b . -9 b = 27 b =

saul85 [17]

Final Answer: $b = -3$

Steps/Reasons/Explanation:

Question: Solve for $b$ . $-9 b = 27$ . $b$ = ?

Step 1: Divide both sides by $-9$ .

$b = -\frac{27}{9}$

Step 2: Simplify $\frac{27}{9}$ to $3$ .

$b = -3$

~I hope I helped you :)~

5 0

2 years ago

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Factor the expression -8x 2+ 22x - 15

Paladinen [302]

The answer is: 3(2x-5)

6 0

2 years ago

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Hurry :(

Naya [18.7K]

Answer:

The answer is d=37 in

Step-by-step explanation:

3 0

2 years ago

What is the solution of the system x − 3y = –13 and 5x + 7y = 34? A. `x = (6)/(5)`, y = 4 B. `x = (7)/(2), y = (9)/(2)` C. `x =

Masteriza [31]

For this case we have the following system of equations:

$x-3y = -13\\5x + 7y = 34$

From the first equation we clear "x":

$x = -13 + 3y$

We substitute in the second equation:

$5 (-13 + 3y) + 7y = 34$

We apply distributive property:

$-65 + 15y + 7y = 34$

We add similar terms:

$-65 + 22y = 34$

We add 65 to both sides:

$22y = 34 + 65\\22y = 99$

We divide between 22 on both sides:

$y = \frac {99} {22}\\y = \frac {9} {2}$

We look for the value of the variable "x":

$x = -13 + 3 \frac {9} {2}\\x = -13 + \frac {27} {2}\\x = \frac {-26 + 27} {2}\\x = \frac {1} {2}$

Thus, the solution of the system is:

$(x, y): (\frac {1} {2}, \frac {9} {2})$

ANswer:

$(x, y): (\frac {1} {2}, \frac {9} {2})$

5 0

3 years ago

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Among two supplementary angles, the measure of the larger angle is 44°

zhuklara [117]

Answer:

68° and 112°

Step-by-step explanation:

Supplementary angles sum to 180°

let the smaller angle be x then the larger angle is x + 44 , then

x + x + 44 = 180 , that is

2x + 44 = 180 ( subtract 44 from both sides )

2x = 136 ( divide both sides by 2 )

x = 68

Smaller angle = 68° and

larger angle = x + 44 = 68 + 44 = 112°

6 0

2 years ago