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3 years ago

Question (e) only please show working as well appreciate it

Mathematics

1 answer:

Georgia [21]3 years ago

3 0

Answer:

a. f(2) = 6

b. f(3) + f(-3) = 62

d. 3(x+1)^2 - 5(x+1) + 4

e. This one looks like the secant line equation. Not fully sure.

Step-by-step explanation:

You replace whatever is inside of the parenthesis with the x in the function. For the first two, you just have to calcluate the numbers.

For the other two , you have use algebra. For d, you replace x with x+1.

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Find the distance between the points (4,-8) and (7-10).

Anastaziya [24]

Answer:

$\displaystyle d = \sqrt{13}$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Coordinates (x, y)

Algebra II

Distance Formula: $\displaystyle d = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

Step-by-step explanation:

Step 1: Define

Point (4, -8)

Point (7, -10)

Step 2: Find distance d

Simply plug in the 2 coordinates into the distance formula to find distance d

Substitute in points [DF]: $\displaystyle d = \sqrt{(7-4)^2+(-10+8)^2}$
(Parenthesis) Subtract/Add: $\displaystyle d = \sqrt{(3)^2+(-2)^2}$
[√Radical] Exponents: $\displaystyle d = \sqrt{9+4}$
[√Radical] Add: $\displaystyle d = \sqrt{13}$

6 0

3 years ago

Read 2 more answers

What is the solution (ordered pair) for the following system of equations? 4x + 3y = 9 and 2x - y = 7?

Naddika [18.5K]

Solve for the first vaiable in one of the equation, then substitute the result into the other equation.

Point Form:

(3, -1)

Equation Form:

x = 3

y = -1

8 0

3 years ago

If f(x) = 3x² - 4 and g(x)= x+2, find (f - g)(x).

evablogger [386]

Answer:

D. 3x² - x - 6

Step-by-step explanation:

If f(x) = 3x² - 4 and g(x)= x+2, find .

We know that (f - g)(x) = f(x) - g(x)

Then

(f - g)(x) = (3x² - 4) - (x+2)

= 3x² - 4 - x - 2

= 3x² - x - 4 - 2

= 3x² - x - 6

7 0

3 years ago

A triangle has side lengths 7/8 and 3/4. What is the length of the third side, b?

aniked [119]

Answer:

probably 2/4 try it I don't know

7 0

3 years ago

Read 2 more answers

Write in lowest terms: 7x2 - 13x - 2 27x2 - 6x - 1

Ksju [112]

So... get the like-terms and add/subtract $7x^2-13x-2+27x^2-6x-1
\\ \quad \\
\textit{add/subtract the like-terms}
\\ \quad \\
\boxed{7x^2+27x^2}\quad \boxed{-13x-6x}\quad \boxed{-1-2}$

see what that gives you

8 0

3 years ago