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Virty [35]
3 years ago
12

(x+5)to the second power -4=12​

Mathematics
1 answer:
Softa [21]3 years ago
5 0

Answer:

x = 3i

Step-by-step explanation:

(x+5)² - 4 = 12

simplify (x+5)²

x × x + 5 × 5 - 4 = 12

x² + 25 - 4 = 12

x² + 21 = 12

combine the like terms

x² = 12 - 21

x² = -9

square root both sides to solve for x

√x² = √-9

the square cancels the square root, so we have

x = √-9

x = 3i

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4 0
4 years ago
Okay so there isn’t a square root of -1/125 right?? Like- am I just missing something or..?
Dmitry_Shevchenko [17]
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7 0
2 years ago
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5 0
3 years ago
Show all work to write the equations of the lines, representing the following conditions, in the form y = mx + b, where m is the
natima [27]
4x - 3y - 7 = 0
-3y = -4x + 7
y = 4/3x - 7/3....slope here is 4/3

A. a parallel line will have the same slope

y = mx + b
slope(m) = 4/3
(-2,1)...x = -2 and y = 1
sub and find b, the y int
1 = 4/3(-2) + b
1 = -8/3 + b
1 + 8/3 = b
3/3 + 8/3 = b
11/3 = b

so ur parallel line is : y = 4/3x + 11/3

B. A perpendicular line will have a negative reciprocal slope. To get the negative reciprocal of a number, u flip the number and change the sign. So our perpendicular line will need a slope of -3/4

y = mx + b
slope(m) = -3/4
(-2,1)...x = -2 and y = 1
sub and find b, the y int
1 = -3/4(-2) + b
1 = 3/2 + b
1 - 3/2 = b
2/2 - 3/2 = b
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so ur perpendicular equation is : y = -3/4x - 1/2
8 0
3 years ago
The question is in the picture :)
Umnica [9.8K]

Answer:

The answer is 10 miles x/ 75= 1 / 7.5 7.5x = 75 x= 10 miles

Step-by-step explanation:

Hope I helped

4 0
3 years ago
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