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dmitriy555 [2]
3 years ago
12

Click and drag like terms onto each other to simplify fully. -7x+2-x+3–6

Mathematics
1 answer:
WITCHER [35]3 years ago
8 0

Answer:

-8x - 1

Explanation:

-7x + 2 - x + 3 – 6

  • Group like terms

-7x - x + 2 + 3 - 6

Add: 2 + 3 - 6 = -1

= -7x - x - 1

Combine: -7x - x = -8x

= -8x - 1

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Which equation represents a hyperbola with a center at (0,0), a vertex at (0,60), and a focus at (0,-65)
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Given that the hyperbola has a center at (0,0), and its vertices and foci are on y-axis. This, the equation of the hyperbola is of the form
x²/a²-y²/b²=-1 (a>0, b>0)
In the equation, vertices are (0, +/-b) .
Thus, 
b=60
Foci (0,+/-√(a²+b²))
thus
√(a²+60²)=65
hence solving for a²
a²=65²-60²
a²=625
a²=25²
hence the equation is:
x²/25²-y²/60²=-1
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3 years ago
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Answer:

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Step-by-step explanation:

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An outlier is a point that is more than 1.5IQR below Q1 or above Q3.  

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51 - 15 = 36 > 1.5IQR

The point at 15 is an outlier.

2. Test for normal distribution

The median is not in the middle of the box.  

Rather, it cuts the box into two unequal parts, so the data does not have a normal distribution.

3. Test for skewness

The longer part is to the left of the median, so the data is skewed left.

 

4 0
3 years ago
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Answer:

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Step-by-step explanation:

The range is the set of all second elements of ordered pairs (y-coordinates).

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Answer:

the right triangles are B,C,D

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