what is the most convenient method to solve the quadratic equation ( x + 4 )² = 15
A. extracting square root
B. factoring
C. completing the square
D. quadratic formula​

Answers

Answer 1

Answer:

Factoring

Step-by-step explanation:

(x+4)² = 15

x² + 8x + 16 = 15

x² + 8x + 1 = 0

[tex]x = \frac{ - 8 + \sqrt{64 - 4} }{2} = - 4 + \sqrt{15} \\ \\ x = \frac{ - 8 - \sqrt{64 - 4} }{2} = - 4 - \sqrt{15} [/tex]

I hope this helps you :)

Answer 2

Answer:

B

Step-by-step explanation:


Related Questions

Angelo has $5.50 for lunch. He guys a cookie for $1.05
and a drink for 1.45. How much money does Angelo
have left?

Answers

Answer:

Angelo has $3 dollars left

Step-by-step explanation:

$1.05+$1.45= 2.50

$5.50-$2.50= $3

Answer:

$3

Step-by-step explanation:

$5.50 - $1.05 = $4.45

$4.45 - $1.45 = $3.00

Can You Help Me!!!!!!!

Answers

y = -4/3x + 1 or can be 3y = -4x + 3
they are both the same

KING VON JUST DIED NOT TO LONG AGO!!!!! SAD !!!!!1

Answers

Answer:

Jimmy Choo, with a handbag too, red or baby blue?

She gets to smilin' she ain't used to this, 'cause she ain't use to ***

I'm just laughin', could've been a pimp the way I move my lips

Step-by-step explanation:

Answer:

that sad i very upset

Step-by-step explanation:

what are possible solutions for -6c > -2

Answers

Answer: x < 1/3

Step-by-step explanation:

can someone help me answer that question​

Answers

Answer is the second choice

The value of a variable is fixed. True or false Explain:

Answers

Answer:

False

Step-by-step explanation:

Please answer FAST i need your help and when you put your answers put them like
1.
2.
3.
4.
5.

Answers

Step-by-step explanation:

3.5

1

-7.14

1

1/5

6.5

sorry if this and are wrong

1. 3.5
2.=-1/8
3.-30.66
4.=1/3

Solve this system of linear equations. Separate
the x- and y-values with a comma.
6x - 4y = -44
2x + 3y = -6
Enter the correct answer.

Answers

Answer:

( − 6 , 2 )

Step-by-step explanation:

Solve for the first variable in one of the equations, then substitute the result into the other equation.   (the points of intersection).

Find two consecutive even numbers whose sum is 126

Answers

Answer:64

Step-by-step explanation:

Work out the percentage change to 2 decimal places when a price of £97 is decreased to £90.

Answers

Answer:

I NEED THIS ANSWER!

Step-by-step explanation:

Which table represents y as a function of x?

A. x---y
−3 3
−2 4
0 6
1 7

B. x---y
1 0
2 0
2 3
3 3

C. x---y
3 −3
4 0
4 1
6 2

D. x---y
x y
0 1
0 2
3 2
3 3

PLEASE HELP ILL MARK BRAINLIEST!!

Answers

Answer:

A

Step-by-step explanation:

Answer:

a

Step-by-step explanation:

Use the following image to find each of the missing angles. Can someone help me please

Answers

Answer:

the first answer is m<3=87

the second answer is m<4=44

Step-by-step explanation:

use the triangle theorem lol

but how i found out was angle 3 and what ever angle has 93⁰ are supplementary meaning that they equal 180⁰ so i subtracted 93⁰ from 180⁰ and got 87⁰ as tbe measure of angle 3

angle 4, 3 and the given angle, since it makes a triangle should equal 180⁰. so 180⁰- 49⁰-87⁰ leaves you with 44⁰

John spent $19.00 at the tuck shop. He bought 2 chocolate bars and 3 packets of
chips. The amount he spent on chips was $3.00 greater than the amount he
spent on chocolate. Jane wants to buy 3 chocolate bars and 3 packets of chips.
How much will it cost her?

Answers

Answer:

It will cost Jane $21.00

Step-by-step explanation:

As, cost of 1 chocolate = x

The cost of 1 packet of chips = $3 + x

So no. Of 2 chocolate bars = x + x = 2x

And no. Of packet of chips = ($3+x) + ($3+x) + ($3+x) = 3(3+x) = 9+3x

So now = cost Of chocolate + cost of chips = $19

So = 2x + 9+3x = 9 + 5x

So 9 + 5x = $19

So 5x = $19 - 9 = $10

So 5x =10

x = 10/5

x = 2

So cost of 2 chocolate = 2x = 2($2) = $4

And 3 chip packet = 9+3x = 9+3($2) = 9+6 =$15

So now total = $4 + $15 = $19

Now for John = 2 chocolates and 3 packets of chips = $19

Now for Jane she has 3 chocolates and 3 packets of chips, so she has one more chocolate amd now we know that 1 chocolate = $2

So we will just add one more chocolate

So Jane will pay = $ 19 + $2 = $21

So it will cost Jane = $21:00

I desperately need the answer please what is a chair

Answers

Answer:

a seat-that u sit on when you are teird ummmm yeah have a nice dayyyy

A TV that normally cost $800 is on sale for 33% off. There is a 6% sales tax on the purchase. What is the final cost of the TV?​

Answers

Answer:

$568.16

Step-by-step explanation:

Answer: The answer to your problem is $568.16

What are the slope and the y-intercept of the linear function that is represented by the graph?
5
4
3
2
1
-5 4 3 2 1
3 4 5
2
The slope is ĝ, and the y-intercept is -2.
2
The slope is 3, and the y-intercept is 3.
and Exit

Answers

Answer:

the therid one

Step-by-step explanation:

PLEASE HELP! THANKS!!!

Answers

Answer:C

Step-by-step explanation: 2x=8 so x=4

This diagram represents a function named h. Which of the choices also represents the function, h?

Answers

Answer:

if this is on Imagine Math then its the first answer

Step-by-step explanation:    got it right!

The correct choices to represents the function, h is shown in figure.

⇒ h (x) = 4x - 2

What is Equation of line?

The equation of line in point-slope form passing through the points

(x₁ , y₁) and (x₂, y₂) with slope m is defined as;

⇒ y - y₁ = m (x - x₁)

Where, m = (y₂ - y₁) / (x₂ - x₁)

Given that;

This diagram represents a function named h.

Now, We have;

The correct equation to represent the equation is,

h (x) = x × 4 + 9- 2)

h (x) = 4x - 2

Hence, We can draw the equation of line and find that the correct choices to represents the function, h

Learn more about the equation of line visit:

https://brainly.com/question/18831322

#SPJ3

Find the value of the following expression

(2^8 5^-5 19^0) x [5^-2 over 2^3]^4 x 2^28 (5 points)

Write your answer in simplified form. Show all of your steps. (5 points)

Answers

Looks like the expression is

(2⁸ • 5⁻⁵ • 19⁰) • (5⁻² / 2³)⁴ • 2²⁸

First, any positive number raised to 0 is 1:

(2⁸ • 5⁻⁵ • 1) • (5⁻² / 2³)⁴ • 2²⁸

(2⁸ • 5⁻⁵) • (5⁻² / 2³)⁴ • 2²⁸

Exponents in a denominator can be rewritten as negative exponents in the numerator:

(2⁸ • 5⁻⁵) • (5⁻² • 2⁻³)⁴ • 2²⁸

Distribute the 4th power across the product 5⁻² • 2⁻³ :

(5⁻² • 2⁻³)⁴ = 5⁻⁸ • 2⁻¹²

so we have

(2⁸ • 5⁻⁵) • (5⁻⁸ • 2⁻¹²) • 2²⁸

Multiplication is associative, so we can ignore the parentheses. Combine factors with equal bases and simplify the exponents:

2⁸ • 5⁻⁵ • 5⁻⁸ • 2⁻¹² • 2²⁸

2⁸⁻¹²⁺²⁸ • 5⁻⁵⁻⁸

2²⁴ • 5⁻¹³

Rewrite the negative exponent as a positive one:

2²⁴ / 5¹³

5+5= what pllease help!!!!!!!!!!!! 10 points!

Answers

Your answer would be 10 please give me brainliest

Expand Your answer should be a polynomial in standard form. (x+3)(x−5)

Answers

Answer:

x^2 -2x -15

Step-by-step explanation:

xx+x(-5)+3x+3(-5)

=xx-5x+3x-3 times 5(simplify answer)

=x ^2 -2x-15

What is the gcf of 99 and 54

Answers

Answer:

9

Step-by-step explanation:

The factors of 99 are 99, 33, 11, 9, 3, 1. The common factors of 54 and 99 are 9, 3, 1, intersecting the two sets above. In the intersection factors of 54 ∩ factors of 99 the greatest element is 9. Therefore, the greatest common factor of 54 and 99 is 9.

Hope this helps :)

Can I have brainliest?

Answer:

9

Step-by-step explanation:

9 x 11 = 99

9 x 6 = 54

plz help me. i don’t want to fail math. ahahahah

Answers

Answer:

2215

Step-by-step expla1st off wrRCWCvvcvvv

Answer:

1: Neither

2: Parallel

3: Perpendicular

4: Neither? (Not sure on this one)

What is the percent increase??? Let’s see who gets it right !

Answers

Answer:

90% increase

Step-by-step explanation:

38-20 To find the increase in the wolves.

Then, you have to divide by the original amount. You will get 0.9

Multiply by 100 to get the percentage

You will get 90%

On Monday, Florencia's hair was h centimeters long. She got a haircut on Tuesday, so her hair was only 75% percent of the length it was on Monday.
Which expressions could represent how many centimeters long Florencia's hair was after the haircut?

Answers

What is h?

maybe 25%

i hope it helped you sorry if it didn't

Answer:

25%

Step-by-step explanation:

PLEASE HELP 20 POINTS RIGHT HERE!!!!!!!

Answers

Answer:

C

Step-by-step explanation:

Everything else can be simplified to 2/5, except for 9/20

Answer:

9/20 is not equivalent to the others

Step-by-step explanation:

9 is not divisible by 2

Find the dimensions of a rectangle whose width is 5 miles less than its length and whose area is 84

Answers

Answer: the length of the rectangle is 12 miles and the width is 12-5=7 miles.

Step-by-step explanation:

Susan owes $15,000 in student loans. She pays $150 toward the debt every month. Represent the total amount that she owes as a function of months (x) after each payment?

Answers

Answer:

f(x) = 15000 - 150x

Step-by-step explanation:

Given that:

Initial Amount owed = $15000

Amount payed towards debt per month = $150

Total amount owed as a function of month(x) after each payment :

F(x) = Initial amount owed - (amount paid per month * number of month)

Let number of month = x

f(x) = 15000 - 150x

Hence, the function ;

f(x) = 15000 - 150x represents the total amount owed after each payment.

Laron is thinking about majoring in business in college because with a bachelor's degree the starting salaries are about $45,000 per year. If a master's degree will allow him to start out at about 15 percent higher, how much can he expect his starting pay to be with a master's degree?​

Answers

Answer:

$6750 per year

Step-by-step explanation:

15% / 100 = 0,15

0,15 x $45,000 = $6750 he will get per year

Graph the line with slope 1/4 and y intercept -2

Answers

Answer:

y= 1/4x -2

Step-by-step explanation:

Y=mx+b

m is the slope

b is the y intercept

The equation of line is y= 1/4x -2 .

What is slope?

A line's slope is determined by how its y coordinate changes in relation to how its x coordinate changes. y and x are the net changes in the y and x coordinates, respectively. Therefore, it is possible to write the

change in y coordinate with respect to the change in x coordinate as,

m = Δy/Δx

where, m is the slope

Given:

slope = 1/4 and y intercept = -2

Using slope- intercept form

y= mx + b

y= 1/4x + (-2)

y= 1/4x -2

Learn more about slope here:

https://brainly.com/question/3605446

#SPJ2

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