2 years ago

Solve for x in the given triangle. A) -9 B) -7 C) 7 D) 6

Mathematics

1 answer:

Gelneren [198K]2 years ago

6 0

Wheres the triangle??

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Solve by completing the square

Sveta_85 [38]

$\qquad\qquad\huge\underline{{\sf Answer}}☂$

Let's solve ~

$\qquad \sf \dashrightarrow \: {x}^{2} + 8x = 33$

$\qquad \sf \dashrightarrow \: {x}^{2} + 8x +16 = 33 + 16$

$\qquad \sf \dashrightarrow \: (x + 4) {}^{2} = 49$

$\qquad \sf \dashrightarrow \: x + 4 = \sqrt{49}$

$\qquad \sf \dashrightarrow \: x + 4 = \pm7$

Hence, there are two solutions ~

1. when x + 4 = 7

$\qquad \sf \dashrightarrow \: x + 4 = 7$

$\qquad \sf \dashrightarrow \: x = 7 - 4$

$\qquad \sf \dashrightarrow \: x = 3$

2. when x + 4 = -7

$\qquad \sf \dashrightarrow \: x + 4 = - 7$

$\qquad \sf \dashrightarrow \: x = - 7 - 4$

$\qquad \sf \dashrightarrow \: x = - 11$

I hope you understood ~

8 0

2 years ago

Find the value of y that makes the equation y = -2x + 4 true when x = 1. Select one: a. 2 b. -2 c. 6 d. -6

rodikova [14]

Y = -2x + 4

substitute the value of x = 1 to the equation:

y = -2 · 1 + 4 = -2 + 4 = 2

Answer: a. 2

8 0

3 years ago

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What advice would you give someone who is about to graduate from college and become a teacher?

Kazeer [188]

Answer:

he /she must be patient as a teacher

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2 years ago

The second one write it on the paper and take a picture

Elodia [21]

Answer:

The common for the second question is 30

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2 years ago

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Bojangles has a rectangle-shaped roof with a width of 6x^2 feet and a length 12x^3. What is the area of the roof?

emmainna [20.7K]

area of rectangle = length x width

this is the formula to find it.

now , put the values of length and width,

=> area= 12 x 3 x 6 x 2

=> area = 432 feet^2

Hope this helps!

8 0

3 years ago