All categories

2 years ago

What are the factors of x^2-81

Mathematics

2 answers:

emmasim [6.3K]2 years ago

6 0

Answer:

A.) (x+9) (x-9)

Step-by-step explanation:

x² - 81

x² - 9²

(x - 9)(x + 9)

zalisa [80]2 years ago

4 0

Answer:

A. x-9 and x+9 because these are perfect squares. 9 times -9 is -81. x times x is x^2. 9 + -9 is 0

Step-by-step explanation:

You might be interested in

A machine is designed to fill toothpaste tubes, on an average, with 5.8 ounces of toothpaste. The manufacturer does not want any

pochemuha

The correct hypothesis that can be set up for this test is given as

H0: mu = 5.8

Ha: mu ≠ 5.8

<h3>What is a statistical hypothesis?</h3>

This is the method of inference that is made in a statistical testing in order to know if the dat available is able to support the claims that have been made.

What the manufacturer wants to know is the average filling of the machine. If it is within 5.8 or not.

Read more on hypothesis here:

brainly.com/question/11555274

#SPJ1

4 0

1 year ago

How can you tell that −10 and −20 are solutions to this inequality, but 10 is not? 3n − 40 < −5n + 8

pochemuha

Step-by-step explanation:

-10 or -20 satisfies the equation.

But when you substitute 10 in:

30-40<-50+8

-10<-42(wrong)

it's wrong

6 0

2 years ago

2x + 4y = 22<br>2x - 2y = -8

NISA [10]

Answer:

2x+4y=22

-2x+2y=+8

6y=30

y=5

now

replace the value of y in equ i

2x +4y =22

2x+20=22

x=1

6 0

2 years ago

Read 2 more answers

Help plz question is in the photo

mixas84 [53]

Answer:

A. Trinomial

Step-by-step explanation:

It says it's a polynomial and that based on the number of terms. So right then you can cancel out cubic and quadratic because they aren't polynomials. Also:

Cubic is just a variable with the exponent of 3. Examples:

$x^3,y^3,z^3$

Binomial is a polynomial with 2 terms. Examples:

$5x+3; 6x+2; x+7$

A quadratic has a division sign.

8 0

2 years ago

Plot the image of point Q under the translation (x,y) (x+1,y+2).

nikitadnepr [17]

Answer : Point “ Q “ should be on (-4,4) so go over 1 unit to the RIGHT & two units UP so your new points would be ( -3 , 6 ) hope this helps yw / btw .

Step-by-step explanation:

5 0

2 years ago