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drek231 [11]
3 years ago
9

F(x)=-x^2+8x-11 find the value of f(-1)-f(1)

Mathematics
1 answer:
IrinaVladis [17]3 years ago
5 0

Answer: The answer is (4,5)

Step-by-step explanation:

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Based on the graph, which statement is correct about the solution to the system of equations for lines K and J?
Whitepunk [10]
Your answer is A) (1,1) is the solution to both lines K and J

That's because the solution to a system of equations has to be the solution to both of the lines. Also, both of the lines intersect at the point (1,1).
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4 years ago
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Exponential growth can anyone give the answers to me? I’m completely lost!
PilotLPTM [1.2K]

Answer:

Q1

<u>The exponential growth model for frogs:</u>

  • F(x) = 100(1.22)ˣ,

F- number of frogs, x- number of years, 1.22 - growth factor

<u>Calculations</u>:

  • F(5) = 100(1.22)⁵ = 270
  • a) F(10) = 100(1.22)¹⁰ = 730
  • b) F(20) = 100(1.22)²⁰ = 5335  

<em>All numbers rounded </em>

Q2

<u>The exponential growth model for bacteria:</u>

  • B(x) = 10(1.8)ˣ

B- number of bacteria, x- number of hours, 1.8 - growth factor

<u>Calculations:</u>

  • a) B(5) = 10(1.8)⁵ = 189
  • b) B(24) = 10(1.8)²⁴ = 13382588
  • c) B(168) = 10(1.8)¹⁶⁸ = 7.68 * 10⁴³

<em>All numbers rounded </em>

Q3.

<u>The exponential growth model for fish:</u>

  • F(x) = 821(1.02)ˣ,

F- number of fish, x- number of months, 1.02 - growth factor

<u>Calculations:</u>

  • a) F(12) = 821(1.02)¹² = 1041
  • b) F(120) = 821(1.02)¹²⁰ = 8838

<em>All numbers rounded </em>

3 0
3 years ago
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The triangles are similar.
RSB [31]

Answer:

The value of x is 12.

Step-by-step explanation:

In order to find the value of x, we first need to find the scale factor. We can find this by dividing any side of the larger triangle with the corresponding part of the smaller triangle.

28/7 = 4

This means everything in the larger triangle is 4 times as great as the smaller triangle. Knowing this, we can set the larger hypotenuse equal to 4 times the smaller.

6x + 28 = 4(25)

6x + 28 = 100

6x = 72

x = 12

8 0
3 years ago
Age of each person in Kidz Zone
joja [24]

Answer:

10-15

Step-by-step explanation:

Median is the middle of the numbers (or in this case, number sets)

The middle number set is the third.

Thus, the interval would be 10-15.

7 0
3 years ago
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Find the surface area of a sphere with a radius of 12 cm. Approximate 3.14 and round your answer to the nearest hundredth
attashe74 [19]
The equation to find a spheres surface area is 4 pi R ^2
and this works in any order 

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the full answer is 7234.56 (((4 * R)^2)\pi)
5 0
3 years ago
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