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GREYUIT [131]
3 years ago
6

-10-|1+4b|=-19 Y = 0

Mathematics
1 answer:
alexandr402 [8]3 years ago
3 0

Answer:

b=2 or b=-2.5

Step-by-step explanation:

We solve absolute value equations the same as any other equation using inverse operations. However, the inverse operation for absolute value requires one special condition. Since absolute values change a number to a positive regardless if it has a negative sign, we have two possible answers. When we have the absolute value operation isolated, we will set it equal to both the negative and positive option.  

-10-|1+4b|=-19\\-10+10-|1+4b|=-19+10\\-|1+4b|=-9\\\frac{-|1+4b|}{-1} =\frac{-9}{-1} \\|1+4b|=9

We now have the absolute value isolated. We will set it equal to both 9 and -9.

1+4b=9\\1-1+4b=9-1\\4b=8\\b=2

and

1+4b=-9\\1-1+4b=-9-1\\4b=-10\\b=\frac{-10}{4}=\frac{-5}{2}=  -2.5

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|x|=3 what is the answer to this equation?
AysviL [449]

If |x|=3, x can be either 3 or -3
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3 years ago
What is 2/9 = 4/x+8 i dont get this fraction solving
Dmitriy789 [7]

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\frac{2}{9}  =  \frac{4}{x + 8}  \\

\frac{4}{x + 8}  =  \frac{2}{9}  \\

Inverse both sides

\frac{x + 8}{4}  =  \frac{9}{2}  \\

Multiply sides by 4

4 \times  \frac{x + 8}{4}  = 4 \times  \frac{9}{2}  \\

x + 8 = 2 \times 9

x + 8 = 18

Subtract sides 8

x + 8 - 8 = 18 - 8

x = 10

Done...

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3 0
2 years ago
What is y=2x? (its in the mathematics Georgia book)
skelet666 [1.2K]
The answer would be X=1/2y
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3 years ago
Can someone solve this for me? i also would like to know how you did (worked it out)
Nitella [24]

Answer:

it's

Step-by-step explanation:

(2f+2)(2f-2)

(2f^2-2^2)

7 0
2 years ago
Read 2 more answers
Can anybody please help me out with this question I would really appreciate it so much. Please and thank you .
PolarNik [594]

(7x+2)° = (9x–8)°

=>7x –9x = –8–2

=> –2x = –10

=> x = 10/2

=> x = 5

<ADB = (7x+2)°

= 7×5+2

= 37°

<BDC = (9x–8)°

= 9×5–8

= 45 –8

= 37°

<ADC = 37° + 37°

= 74°

8 0
3 years ago
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