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marshall27 [118]
2 years ago
7

On a number line, a number, b, is located the same distance from 0 as another number, a, but in the opposite direction. The numb

er b varies directly with the number a. For example b = 22 when a = -2. Which equation represents this direct variation between a and b? b=a Ob=a 01:57:12 O b-a=0 O b(-a)= 0 On a number line , a number , b , is located the same distance from 0 as another number , a , but in the opposite direction . The number b varies directly with the number a . For example b = 22 when a = -2 . Which equation represents this direct variation between a and b ? b = a Ob = a 01:57:12 O b - a = 0 O b ( -a ) = 0​
Mathematics
1 answer:
liberstina [14]2 years ago
5 0
This is a very long question br0(3b)Y=
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№19
2 x^{2} -4x-5=0 \\  D=-4 ^{2} -4*2*(-5)=16+40=56 \\  \\  x_{1}= \frac{4+ \sqrt{56} }{2*2}  = \frac{4}{4} + \sqrt{ \frac{56}{16} } =1+ \sqrt{3.5}  \\  \\  x_{2} = \frac{4- \sqrt{56} }{2*2} = \frac{4}{4} -  \sqrt{ \frac{56}{16} } =1- \sqrt{3.5} 

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3 0
4 years ago
Q(-2, 3) and P (2, 1)<br> Find the length of the segment. Simplify each radical,if possible
Montano1993 [528]

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Answer:

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Step-by-step explanation:

The distance formula is useful for this.

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The length of segment PQ is 2√5.

7 0
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