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ANTONII [103]
2 years ago
8

Look at the pic and show your work

Mathematics
1 answer:
Jobisdone [24]2 years ago
5 0

We kindly invite to check the image attached below to see the representation of the <em>exponential</em> function. This function shows <em>exponential</em> growth.

<h3>How to graph exponential functions</h3>

In this occasion we must plot the graph of <em>exponential</em> functions of the form:

y = a · bˣ     (1)

Where:

  • a - Initial value
  • b - Base of the function
  • x - Independent value
  • y - Dependent value

First, we need to follow this procedure to create the graph of the curve on <em>Cartesian</em> plane:

  1. Evaluate the function at every x-value.
  2. Fill the blanks on table.
  3. Mark the <em>rectangular</em> points (x, y) on the <em>Cartesian</em> plane.
  4. Match the points.

Therefore, we build the <em>exponential</em> curve with the help of a <em>graphing</em> tool (i.e. Desmos), whose result is shown in the image attached below.

From (1) we must understand that <em>exponential</em> functions report growth for b > 1 and decay for 0 < b < 1. Thus, the <em>exponential</em> function y = 3ˣ shows <em>exponential</em> growth according to graphical and analytical findings.

To learn more on exponential functions: brainly.com/question/11487261

#SPJ1

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Suppose `h\left(t\right)=-5t^{2}+10t+3`is an expression giving the height of a diver above the water (in meters), t seconds afte
prisoha [69]

Answer:

Step-by-step explanation:

a) The height of the springboard above the water should be h(0) : Read, the height at t = 0

h(0) = -5(0) + 10(0) + 3

h(0) = 0 + 0 + 3

h(0) = 3

a) 3 meters

b)  The time it takes the diver to hit water should be, the positive 0 solution for t.  Remember, in a quadratic equation,  there are two values for t where a parabola crosses the horizontal axis, which in this case would be t.  Just by looking at the function, h(t) = -5t2 + 10t + 3 , one should be able to see that it cannot be factored easily, so it requires the Quadratic Formula to find the zeros ; x = -b ±√(b2-4ac)  / 2a

Substitute t for x, and use the coefficients for a, b, c:

t  =  (-10 ± √((102 - 4(-5)(3)))/2(-5)

t = (-10 ±√(100 + 60))/-10

t = (-10 ±√160)/-10) ; Now factor the 160 to simplify:

t = (-10 ±√(10*16))/-10

t = (-10 ±4√10)/-10 ; Factor out leading coefficient of -2 from the numerator:

t = -2(5 ± 2√10)/-10

t = (5 ± 2√10)/5

Using a calculator to find the zeros, and disregarding the negative zero (because t starts at 0):

t ≈ 2.265

b) approx. 2.265 seconds for diver to hit water.

c) To find this, set the function equal to 3 to find what other value for t would be equal to 3 (we know one is 0).

-5tt + 10t + 3 = 3

-5t2 + 10t = 0 ; factor out t

t(-5t + 10) = 0

We know t = 0:

We also know that -5t + 10 = 0

-5t = -10

t = 2

c) 2 seconds. This is the time that diver would equal height of t=0 which is where he started, and where he equals the height of the springboard.

d and e) The peak of the dive (parabola), is determined using the formula h = -b/2a (Derived from the Quadratic Formula) to find the y value (in this case, the h value, answering e) and then using that result in the function to find the x value (in this case, the t value answering d) of the point where the parabola (dive path) reaches a maximum(height), or minimum(in upward opening parabolas).

h = -10/2(-5)

h = -10/-10

h = 1

h(1) = -5(1)2 + 10(1) + 3

h(1) = -5 + 10 + 3

h(1) = 8

d) At t = 1 second, diver will have reached peak of dive.

e) At t = 1 second, diver will have reached a maximum height of 8 meters.

5 0
3 years ago
Devon wants to write an equation for a line that passes through 2 of the data points he has collected. The points are (8, 5) and
melamori03 [73]
Use slope formula to find slope <span><span><span>−9−5</span><span>−/12−8</span></span>=<span><span>−14/</span><span>−20</span></span>=<span>7/10</span></span> 7/10 = m = slope  
y= mx + b
y= (7/10)x + b
(8,5)
(5) = (7/10)(8) + b
b = -3/5

So.... <span>y=(<span>7/10)</span>x −<span>35

</span></span> multiply by 10

<span>10y=7x−6</span><span> --> -7x + 10y = -6
 --> 7x - 10y = 6
 So, if 7x - 10y = 3 a good model?</span>
6 0
3 years ago
Read 2 more answers
According to the number line, what is the distance between points A and B?
sleet_krkn [62]

Answer:

14 units

Step-by-step explanation:

12-(-2)=14

4 0
3 years ago
Read 2 more answers
How do you solve 2(x+7)+x=20
alexira [117]
2(x+7) + x=20
(2)(x) + (2)(7) + x=20  Distribute 
2x+14 + x =20
(2x+x) + (14) =20  Combine Like Terms 
3x+14=20 
    - 14  -14             Subtract 14 from both sides 
3x = 6 
3x/3 6/3                  Divide Both Sides by 3 
 
x = 2 


Let me know if you still don't understand 

4 0
3 years ago
Find the circumference of the circle and area of the circle.
ad-work [718]

Answer:

C = 50.24

A = 7,925.540864 (Round to whatever you want)

Step-by-step explanation:

c = 2πr

c = 2(3.14)(8)

c= 50.24

A = πr^2

A = (3.14)(50.24)^2

A = 7,925.540864

8 0
3 years ago
Read 2 more answers
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