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3 years ago

15

Write y = 3x2-12x +11 in vertex form. please show work

2 answers:

MaRussiya [10]3 years ago

6 0

Answer:

y = 3 ( x − 2 ) 2 − 1

Step-by-step explanation:

To convert a quadratic from y = ax2 + bx + c form to vertex form, y = a(x - h)2+ k, you use the process of completing the square. Let's see an example. Convert y = 2x2 - 4x + 5 into vertex form, and state the vertex. Equation in y = ax2 + bx + c form.

Very glad I was able to assist you even though you're pretty rude.

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Studentka2010 [4]3 years ago

4 0

Ohhh ok so im actually not sure if I’m doing this right but if I remember correctly.. there has to be a squared binomial so heres my answer:

3(x-2)^2-1 and the vertex is (2,-1)

Now im not completely sure if I’m right but basically what I did was get a squared binomial and added and multiplied to it to make it equal to the previous trinomial.

Sorry if I’m wrong. Hope this helps some.

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Use a calculator to find the approximate angle measure of the following : cos^-1 (1/4)

Strike441 [17]

Answer:

$75.52^o$

Step-by-step explanation:

Let

x ----> the measure of the angle

we have

$cos(x)=\frac{1}{4}$

using a calculator

Find the the measure of angle x

$x=cos^{-1}(\frac{1}{4})$

$x=75.52^o$

3 0

3 years ago

Given h(x) = -5x + 3, find h(5).

cluponka [151]

Answer:

h(5) = -22

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

<u>Algebra I</u>

Function Notation

Step-by-step explanation:

<u>Step 1: Define</u>

h(x) = -5x + 3

h(5) is x = 5

<u>Step 2: Evaluate</u>

Substitute in <em>x</em> [Function]: h(5) = -5(5) + 3
Multiply: h(5) = -25 + 3
Add: h(5) = -22

8 0

3 years ago

Correct answers onlyy !

77julia77 [94]

Answer:

D

Step-by-step explanation:

a substance made by mixing other substances together.

8 0

3 years ago

What’s the answer to x-2-7

weeeeeb [17]

I think you could only simplify it to x-9

7 0

3 years ago

Read 2 more answers

Question: 3 of 20

zysi [14]

Answer:

Sean earns $7.5 in each hour.

Step-by-step explanation:

Given:

Money earned by Sean = $300

Number of hours worked in a day = 8 hrs

Number of days of work in a week = 5

We need to find Money earned in each hour.

First we will find Total hours work in a week.

Total hours work in a week is equal to Number of hours worked in a day multiplied by number of days work in a week.

Framing in equation form we get;

Total hours worked in a week = $8\times5 = 40\ hrs$

Now we will find money earned for each hour.

Money earned each hour will be calculated by Dividing Total Money earned in a week by Total number of hours worked in a week.

Framing in equation form we get;

Money earned each hour = $\frac{300}{40} = \$7.5$

Hence Sean earns $7.5 in each hour.

8 0

3 years ago