All categories

2 years ago

Factor Completely: x2 - 81 A.(x-9)(x+9) B.(x+9)(x+9) C.(x-9)(x-9) D.(9-x)(9+x)

Mathematics

2 answers:

svetoff [14.1K]2 years ago

8 0

Answer:

the answer is A

Step-by-step explanation:

i just did it on usa testprep

Hunter-Best [27]2 years ago

7 0

Answer is A

The binomial can be factored using the difference of squares formula a2-b2 = (a+b) (a-b) where a=x and b=9

(X+9) x(x-9)

You might be interested in

What is the difference of the polynomials [m²n²-7]-(mn+4)

AleksAgata [21]

You can do addition and substraction operations with polynomials similarly as with simple real numbers.

First of all you have to open brackets and then you can add numbers (-7-4=-11). Then the result is following:
$(m^2n^2-7)-(mn+4) =m^2n^2-7-mn-4=m^2n^2-mn-11$

5 0

3 years ago

What is the area<br> of the figure?

Vitek1552 [10]

Answer:

theres nothing there

Step-by-step explanation:

3 0

2 years ago

Round 325.49 to the nearest tens place

VLD [36.1K]

If you meant tens place it's 330 if you meant tenths place it's 325.5

6 0

3 years ago

Read 2 more answers

Your company has offices in 2 cities. The Denver office has 137 employees with an average salary of $67,013. The Anchorage offic

Charra [1.4K]

Alright, lets get started.

The Denver office has 137 employees with an average salary of $67,013.

So the total salay of all employees at Denver office will be = $137*67013$

So the total salay of all employees at Denver office will be = $ 9180781

The Anchorage office has 25 employees with an average salary of $71,332.

So the total salary of employees at Anchorage office will be = $25 * 71332$

So the total salary of employees at Anchorage office will be = $ 1783300

So, complete total salary of employees at both offices will be = $9180781+1783300$

So, complete total salary of employees at both offices will be = $ 10964081

Total number of employees at both offices are = $137 + 25 = 162$

So, the average salary of employee across the company = $\frac{10964081}{162}$

So, the average salary of employee across the company = 67679.5

Rounding off,

So, the average salary of employee across the company = $ 67680 : Answer

Hope it will help :)

7 0

3 years ago

Read 2 more answers

Please can you give me help with answers. Thanks

Margaret [11]

1) 110+30+a = 180
a = 180-140 = 40
Obtuse angled triangle

2) 50+50+C = 180
C=180-100 =80
Acute angled triangle

3) 45+45+b =180
b =180-90 = 90
Right angled triangle

4) 45+60+C = 180
C = 180-105 =75
Acute angled triangle

5) 94+47+b =180
b = 180-141=39

Obtuse angled triangle

6)81+53+a = 180
a =180-134 = 46

Acute angled triangle

7) 38+45+b =180
b = 180-83 =97
Obtuse angled triangle

8) 36+54+C =180
C =180-90 = 90

Right angled triangle.

5 0

2 years ago