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Drupady [299]
3 years ago
6

Evaluate 1/x^-2 for x = 7. A. -49 B. 1/49 C. 49

Mathematics
2 answers:
Ganezh [65]3 years ago
6 0
The answer to this question is c
mestny [16]3 years ago
3 0

\frac{a}{{b}^{n} }  =  a  \times  {b}^{ - n}
Using this formula, it will become:
1 \times {x}^{2}
Which equals 1 x 7 x 7 which is 49...
Which means the answer is c..
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1) Find the slope of the line passing through the given points (2, 120) and (1, 60).
EastWind [94]

Answer:

1. 60. 2. -6. 3. -4/5

Step-by-step explanation:

Okay so I haven't done slope in 3 years but I used to be a god at it so please tell me if you get this right and I'm so so sorry if you get them wrong

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What are the properties of rotations?
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Find the distance between the points (-5, -10) and (2, 4).
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4 0
3 years ago
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An isosceles triangle has an area of 254 km², and the angle between the two equal sides is 53°. Find the length of the two equal
torisob [31]
Area of a triangle = 1/2 ab sinC

In this equation the angle C is between the two adjacent sides ab
Since the lengths are equal we can call them both X
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8 0
3 years ago
Linda and Imani are each traveling in a car to the beach. Linda’s travel is modeled by a table. Imanis travel it modeled by grap
tino4ka555 [31]

Answer:

Imani traveled faster because her distance surpassed Linda's distance after the fourth hour.

Step-by-step explanation:

1. Understand the slope:

      Ok, so the slope basically tells us how fast Imani and Linda traveled, so if we solve for the slope we know how fast Imani and Linda traveled.

2. Find Linda's slope:

      - Take any two points: (0,10) and (1, 65).

      Slope = (<u>y1 - y2)/(x1 - x2)</u>

<u> </u>                 = (65-10)/(1-0)

                   = 55

    Since the slope is 55, we know her speed is 55 miles per hour.

2. Find Imani's slope:

      - Take any two points: (0,0) and (1, 60).

      Slope = (<u>y1 - y2)/(x1 - x2)</u>

<u> </u>                 = (60-0)/(1-0)

                   = 60

    Since the slope is 60, we know her speed is 60 miles per hour.  

3. Compare: Since 60>55, we know Imani traveled faster. If we look at options, we can see there's only one answer which shows that Imani traveled faster, so that must be the answer.

7 0
3 years ago
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