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Andru [333]
3 years ago
12

If f(x) = 4+ 3x, what is f(-9)?

Mathematics
2 answers:
Vlad [161]3 years ago
8 0

Answer:

-23

Step-by-step explanation:

goldfiish [28.3K]3 years ago
3 0

Answer:

f(-9) is -9 or -9f

Step-by-step explanation:

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John ran for president of the chess club. Of the 325 members in the chess club, 195 members voted for John. What percent of stud
anygoal [31]

Answer:

65%

Step-by-step explanation:

325-195=130

130/200= 65

6 0
4 years ago
A company determines that monthly sales​ S(t), in thousands of​ dollars, after t months of marketing a product is given by ​S(t)
patriot [66]

Answer: a) S'(1) = 136; S'(2) = 104; S'(4) = 76;

b) S''(1) = -38; S''(2) = -26; S''(4) = -2

Step-by-step explanation:

a) S' means first derivative;

\frac{d}{dt}(6t³ - 45t² +180t +130) = 6t² - 50t + 180

S'(1) = 6.1² - 50.1 + 180

S'(1) = 136

S'(2) = 6.2² - 50.2 + 180

S'(2) = 104

S'(4) = 6.4² - 50.4 + 180

S'(4) = 76

b) S'' is the second derivative of S:

\frac{d^2}{dt^2}(6t² - 50t + 180) = 12t - 50

S''(1) = 12.1 - 50

S''(1) = -38

S''(2) = 12.2 - 50

S"(2) = -26

S"(4) = 12.6 - 50

S"(4) = -2

c) Derivative is the rate of change of a function. The first derivative is the slope of the tangent line to the graph if the function in a determined point, while the second derivative measures how the rate of change is changing.

Analysing the values, we can conclude that the sales of the product after t months is decreasing at a rate of 12.

7 0
4 years ago
Which scenarios have a posItive correlation. MARK ALL THAT APPLY. *
Anit [1.1K]

Answer:

Step-by-step explanation:

well the negative correlations are the number of calories consumed and the amount of weight lost by a person and the thickness of the ice on a lake and the likelihood of falling through the ice.

Negative correlation is defined as an inverse relationship between two entities. If entity 1 increases, entity 2 decreases and if entity 2 increases, then entity 1 decreases.

So the postive are

the temperature outside and the number of pool guests

the number of children assigned to a class and the number of desks

the number of children assigned to a class and the number of desks

the price of apples and the number of giraffes in Africa

6 0
3 years ago
If the length of a rectangular field is twice the width and the perimeter is 24. Write an equation that an be used to solve for
Sedbober [7]
If we use the width as x we have 2x with both widths and 4x with both lengths. So 6x=24 and x=4. So length is 8 and width is 4.
7 0
4 years ago
How do you add and subtract mixed numbers
I am Lyosha [343]
You can first convert the mixed numbers into fractions and then operate them

if for example you have 3 4/3 
to convert it you first multiply the whole by the denominator and then you add the nominator. The denominator is the same.

so 3 4/3=13/3 
7 0
3 years ago
Read 2 more answers
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