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Tju [1.3M]
3 years ago
8

What type of function is this ? 15 points

Mathematics
1 answer:
Bezzdna [24]3 years ago
8 0

Answer:

  1. quadratic polynomial
  2. minimum at (1, -9)
  3. decreasing on (-1, 1)

Step-by-step explanation:

1. First differences in the y-values are ...

... -5-0 = -5; -8-(-5) = -3; -9-(-8) = -1; -8-(-9) = 1; -5-(-8) = 3; 0-(-5) = 5

Second differences are ...

... -3-(-5) = 2; -1-(-3) = 2; 1-(-1) = 2; 3-1 = 2; 5-3 = 2

These 2nd differences are constant, so the points can be described by a 2nd-degree polynomial.

2. Values on the graph range from 0 to a low of -9 and back up to 0. There is a minimum at (1, -9).

3. The value at x=-1 is -5; at x=1, it is -9, which is less than -5. The function is decreasing on the interval -1 to 1.

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If a 4 x 16 rectangle has the same area as a square, what is the length of a side of the square?
Licemer1 [7]

Answer:

Option D. 8 units

Step-by-step explanation:

step 1

Find the area of rectangle

The area of rectangle is

A=(4)(16)=64\ units^2

step 2

Find the length side of the square with the same area of rectangle

The area of a square is

A=b^2

where

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we have

A=64\ units^2

substitute

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take the square root both sides

b=8\ units

therefore

The length side of the square is 8 units

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3 years ago
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7 0
3 years ago
NEED HELP TO SOLVE THESE ASAP!!!!!!!!
Anika [276]
For  question 1
x^7
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5 0
3 years ago
SOMEONE HELP BECAUSE I DONT GET THIS
Leno4ka [110]

Answer:

x = 18

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Step-by-step explanation:

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x = 18

m<A = 7x + 40 = 7(18) + 40 = 126 + 40 = 166

6 0
2 years ago
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MakcuM [25]
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