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Luda [366]
1 year ago
14

Given the function w(x) = 9x + 8, evaluate w(5). Explain all steps.

Mathematics
1 answer:
vladimir2022 [97]1 year ago
5 0

The value of the function w(5) is 53

<h3>How to evaluate the function?</h3>

The function is given as:

w(x) = 9x + 8

The expression w(5) implies that the value of x is 5

i.e. x = 5

Substitute the known values in the above equation

w(5) = 9 * 5 + 8

Evaluate the product

w(5) = 45 + 8

Evaluate the sum

w(5) = 53

Hence, the value of the function w(5) is 53

Read more about functions at:

brainly.com/question/2328150

#SPJ1

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Which equation represents a proportional relationship that has a constant of proportionality equal to 0.7?
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3 years ago
The population, P, of six towns with time t in years are given by the following exponential equations:
Oksanka [162]

Given:

The population, P, of six towns with time t in years are given by the following exponential equations:

(i) P=1000(1.08)^t

(ii) P = 600 (1.12)^2

(iii) P =2500 (0.9)^t

(iv) P=1200 (1.185)^t

(v) P=800 (0.78)^t

(vi) P=2000 (0.99)^t

To find:

The town whose population is decreasing the fastest.

Solution:

The general form of an exponential function is:

P(t)=ab^t

Where, a is the initial value, b is the growth or decay factor.

If b>1, then the function is increasing and if 0<b<1, then the function is decreasing.

The values of b for six towns are 1.08, 1.12, 0.9, 1.185, 0.78, 0.99 respectively. The minimum value of b is 0.78, so the population of (v) town  P=800 (0.78)^t is decreasing the fastest.

Therefore, the correct option is b.

5 0
3 years ago
Write 5 Expressions that are equivalent to 20x + 100
lutik1710 [3]
40X+200

60X+300

80X+400

7 0
3 years ago
Find the absolute minimum and absolute maximum values of f on the given interval. f(t) = t 9 − t2 , [−1, 3]
ahrayia [7]

The absolute minimum = -2√2.

The absolute maximum=  4.5

Consider f(t)=t√9-t on the interval (1,3].

Find the critical points: Find f'(t)=0.

f"(t) = 0

√9-t² d/dt t + t d/dt √9-t²=0

√9-t²  + t/2√9-t² (-2t)=0

9-t²-t²/√9-t²=0

9-2t²=0

9=2t²,   t²=9/2, t=±3/√2

since -3/√2∉  (1,3].

Therefore, the critical point in the interval  (1,3] is t= 3/√2.

Find the value of the function at t=1, 3/√2,3 to find the absolute maximum and minimum.

f(-1)=-1√9-1²

    = -√8 , =-2√2

f(3/√2)= 3/√2 √9-(3/√2)²

        = 3/√2 √9-9/2

      =3/√2 √9/2

     =9/2 = 4.5

f(3)= 3√9-3²

    = 3(0)

    =0

The absolute maximum is 4.5 and the absolute minimum is -2√2.

The absolute maximum point is the point at which the function reaches the maximum possible value. Similarly, the absolute minimum point is the point at which the function takes the smallest possible value.

A relative maximum or minimum occurs at an inflection point on the curve. The absolute minimum and maximum values ​​are the corresponding values ​​over the full range of the function. That is, the absolute minimum and maximum values ​​are bounded by the function's domain.

Learn more about Absolute minimum and maximum here:brainly.com/question/19921479

#SPJ4

6 0
2 years ago
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