All categories

3 years ago

F(x) = 4x^2+ 7x – 18 f(-9)

Mathematics

1 answer:

balandron [24]3 years ago

5 0

Answer:

f(-9) = 243

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Function Notation

Step-by-step explanation:

Step 1: Define

f(x) = 4x² + 7x - 18

f(-9) is x = -9

Step 2: Evaluate

Substitute in x: f(-9) = 4(-9)² + 7(-9) - 18
Evaluate Exponents: f(-9) = 4(81) + 7(-9) - 18
Multiply: f(-9) = 324 - 63 - 18
Subtract: f(-9) = 261 - 18
Subtract: f(-9) = 243

You might be interested in

If 1/3 of a set of numbers is 8 how many numbers are in the total set ?

Eduardwww [97]

Answer:

Step-by-step explanation:

1/3 = 8

3/3 = 8*3

7 0

3 years ago

(7^2)^4= n^8 solve for n

S_A_V [24]

Answer:

n=7

Step-by-step explanation:

(7^2)^4= n^8

We know that a^b^c = a^(b*c)

7^(2*4) = n^8

7^8 = n^8

Since the exponents are the same, the bases must be the same

n=7

4 0

3 years ago

Determine whether the improper integral converges or diverges, and find the value of each that converges.

Temka [501]

Answer:

It diverges.

Step-by-step explanation:

We are given the inetegral: $\int\limits^{\infty}_2 \frac{1}{x} (\ln x)^2 dx$

$\int\limits^{\infty}_2 \frac{1}{x} (\ln x)^2 dx=\int\limits^{\infty}_2 (\ln x)^2 d(\ln x)=\\\\=\lim_{t \to \infty} \int\limits^t_2 (\ln x)^2d(\ln x)=\lim_{t \to \infty} \frac{(\ln t)^3}{3} |^t_2=\infty-\frac{(\ln 2)^3}{3} =\infty$

So it is divergent.

7 0

4 years ago

Which statement is true about the discontinuities of the function f(x)?

Leno4ka [110]

Answer:

(a) There are asymptotes at x=3/2 and x=-1/3

Step-by-step explanation:

The denominator zeros can be found by factoring:

f(x) = (x +1)/((2x -3)(3x +1))

Neither of the denominator factors is cancelled by the numerator factor, so each represents a vertical asyptote, not a function hole.

The asymptotes are at the values of x where the denominator is zero:

2x -3 = 0 ⇒ x = 3/2

3x +1 = 0 ⇒ x = -1/3

8 0

2 years ago

Suppose that to make the golf team you need to score no more than 74 on average over 5 games. If you scored 77, 71, 77, and 67 i

vivado [14]

No more than 74 on average of 5 games means no more than 370 shots on total. If you add all of the numbers up you will get 292, so he can still shoot 370-292=78 in the last round, which is answer choice B.

5 0

4 years ago

Read 2 more answers