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2 years ago

Find all real solutions of the equation. ( 2 b + 4 ) 2 − 12 = 0

Mathematics

2 answers:

Sveta_85 [38]2 years ago

6 0

Answer:

Step-by-step explanation:

Find all real solutions of the equation. ( 2 b + 4 ) 2 − 12 = 0

( 2 b + 4 ) 2 − 12 = 0

4b + 8 - 12 = 0

4b - 4 = 0

4b = 4

b = 1

-------------------

check

(2*1+4)*2-12=0

12 - 12 = 0

0 = 0

the answer is good

Simora [160]2 years ago

3 0

Answer:

B = 2

Step-by-step explanation:

( 2 b + 4 ) 2 − 12 = 0

Distribute..

2b+4(2)-12=0

combine like terms

2b+8-12=0

2b-4=0

Now solve this simple 2 step equation...

2b-4=0

+4=+4 <- add 4 to both sides

----------

2b=4

/2 = /2 <- divede both sides by 2

-----------

B = 2

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Find the indicated side length.

Schach [20]

Answer: KL = 5.3

<u>Step-by-step explanation:</u>

Set up the proportion, cross multiply, and solve for the missing side:

$\frac{JL}{GL} = \frac{KL}{HL}$

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8 0

4 years ago

there are 3 boys for every 4 girls in mrs smiths class if there are 28 students in the class how many girls and how many boys ar

Rudiy27

Boys to girls ratio is 3:4 so for every 7 students 3 are boys and 4 are girls bc 3+4 is total students in the ratio. boys are 3/7 so out of 28 students there are 12 boys and girls are 4/7 so out of 28 students 16 are girls
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3 years ago

Read 2 more answers

An artist wants to frame a square painting with an area of 400 square inches.She wants to know the length of the wood trim that

Zarrin [17]

The formula for the area of a square with sides of length x is A = x2 so

x2 = 400 is the equation

This equation has 2 solutions, namely x = ±√400 = +20 or -20

The negative solution does not make sense because a length cannot be less than 0.

The total length needed to go around the painting is the perimeter of the square, which is

P = 4*x = 4*20 = 80 inches

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