All categories

3 years ago

( n^2 - 3n ) 4n = ________

Mathematics

1 answer:

vivado [14]3 years ago

6 0

Answer:

4n³ - 12n²

Step-by-step explanation:

Just distribute the 4n inside of the parenthese.

You might be interested in

PLEASE HELP ME I WILL MAKE YOU BRAINILIST

Luda [366]

Answer:

It's false because it's actually about 75%.

Step-by-step explanation:

From 15-45 is 3/4 of the plot

4 0

3 years ago

lisha is making headbands using ribbon. she would like to make 12 head bands. Each one requires 15.5 inches of ribbon. She estim

katrin2010 [14]

No her estimate is to low because if you multiply 15.5 by 12 you get 186

8 0

3 years ago

Read 2 more answers

I need help on this, please hurry and thank you!

inna [77]

Answer:

$A.\ a_n=n^2+1$

Step-by-step explanation:

$Check:$

$a_n=n^2+1\\\\a_1=1^2+1=1+1=2\qquad CORRECT\\\\a_2=2^2+1=4+1=5\qquad CORRECT\\\\a_3=3^2+1=9+1=10\qquad CORRECT\\\\a_4=4^2+1=16+1=17\qquad CORRECT\\\\a_5=5^2+1=25+1=26\qquad CORRECT$

Used PEMDAS:

P Parentheses first

E Exponents (ie Powers and Square Roots, etc.)

MD Multiplication and Division (left-to-right)

AS Addition and Subtraction (left-to-right)

First Power, next Addition

4 0

3 years ago

Read 2 more answers

which of the following is always true about a parallelogram? A all sides are congruent B all angles are congruent C it has 4 rig

vaieri [72.5K]

The answer is D. All the opposite sides are congruent.

4 0

3 years ago

Read 2 more answers

Regular triangular pyramid has 6 cm long base edge and slant height k=9 cm. Find the lateral area of the pyramid.

gregori [183]

Answer:

81 cm²

Step-by-step explanation:

Since, the lateral face of a triangular pyramid is a triangle,

Given,

The base edge or the base of one lateral face of pyramid, a = 6 cm,

And, the slant height or the height of the face, k = 9 cm,

Thus, the area of one lateral face of the pyramid,

$A=\frac{1}{2}\times a\times k$

$=\frac{1}{2}\times 6\times 9$

$=\frac{54}{2}$

$=27\text{ square cm}$

We know that, a Regular triangular pyramid has 3 lateral faces,

Hence, the total lateral area of the pyramid,

$L.A.=3\times\text{ The area of one lateral face}$

$=3\times 27$

$=81\text{ square cm}$

5 0

3 years ago

Read 2 more answers