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3 years ago

Evaluate the function below for X=3:

Mathematics

1 answer:

Zarrin [17]3 years ago

6 0

Answer:

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Step-by-step explanation:

<u>Step 1: Define</u>

2x³ - x² - 4x + 9

x = 3

<u>Step 2: Evaluate</u>

Substitute in <em>x</em>: 2(3)³ - 3² - 4(3) + 9
Exponents: 2(27) - 9 - 12 + 9
Multiply: 54 - 9 - 12 + 9
Subtract: 45 - 12 + 9
Subtract: 33 + 9
Add: 42

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Given:<br> DBC = RST<br><br> Prove:<br> ABC > RST

masya89 [10]

Answer:

Step-by-step explanation:

Given < DBC = < RST and we need to prove < ABC is greater than <RST.

First given statement:

< DBC = < RST

Reason: Given.

Second given statement :

<ABC = <DBC+ <ABD.

Reason: Angle addition theorem.

<em>Note: < ABC is the sum of angles <DBC and <ABD and we have < DBC = < RST. So it's an obvious thing that the sum of angles <DBC and <ABD is always greater than <RST.</em>

Also, <ABC is greater than <DBC.

Therefore, correct option for third statement is :

5 0

3 years ago

Evaluate the limit of lim/n->infinity 6n^2+5/3n^2

castortr0y [4]

we are given

$\lim_{n \to \infty} \frac{6n^2+5}{3n^2}$

we can see that

degree of numerator = degree of denominator =2

so, we can divide both numerator and denominator by n^2

and we get

$\lim_{n \to \infty} \frac{(6n^2+5)/n^2}{(3n^2/n^2)}$

$\lim_{n \to \infty} \frac{(6n^2/n^2)+(5/n^2)}{(3n^2/n^2)}$

now, we can simplify it

$\lim_{n \to \infty} \frac{6+(5/n^2)}{3}$

now, we can plug n=inf

$= \frac{6+(5/(\infty))}{3}$

$= \frac{6+0}{3}$

$= \frac{6}{3}$

$= 2$ ...............Answer

6 0

3 years ago

Read 2 more answers

Verizon charges $76.00 for 500 minutes and Sprint charges $54.00 for 450 minutes. Who has the better deal? *

Mrac [35]

Answer:

i think it would be sprint cause it is lest money and the mintues is 450 but the other is just 50 more mintues and you have to pay 22 more dollor for verizion so i pick sprint have a nice day

Step-by-step explanation:

5 0

3 years ago

(x-5)^3 expand each binomial

Nina [5.8K]

Answer:

$x^{3} -15x^{2} + 75x-125$

Step-by-step explanation:

6 0

2 years ago

Need help with the question that says how long is the string in centimeters.SHOW YOUR WORK!!!

Nikolay [14]

Important information:
The string is 8.5 inches long.
1 inch = 2.54 centimeters

How to solve:
Multiply both sides by 8.5 to get 8.5 inches = x centimeters.
2.54 • 8.5 = 21.59

Answer:
8.5 inches equals 21.59 centimeters.

Hope this helps! :)

4 0

3 years ago