4 years ago

Please help

Mathematics

1 answer:

irina [24]4 years ago

8 0

Answer:

x^2 -2xy -10y^2

x^2 -9xy +4 y^2

3x^3 +6x^2 -24 x +27

Step-by-step explanation:

3x^2-5xy -6y^2 -( 2x^2 -3xy+4y^2)

= 3x^2- 2x^2 -5xy +3xy-6y^2 -4 Y^2

= x^2 -2xy -10y^2

2x^2−5xy+y^2 -( x^2+4xy−3y^2)

=2 x^2 -x^2 -5xy -4xy +y^2 +3 y^2

=x^2 -9xy +4 y^2

7x^3−16x+18- (4x^3−6x^2+8x−9)

= 7x^3 -4x^3 + 6x^2-16x- 8x +18 +9

=3x^3 +6x^2 -24 x +27

You might be interested in

What are the outliers???

Marina86 [1]

There’s no image to show the outliers

7 0

3 years ago

Only do question 4 50 points Topic: Percentage

Sergeu [11.5K]

Answer:

a 1

b 6

c 15

Step-by-step explanation:

101% 101/100 = 1 1/100

is 1 complete 100 grid and 1/100 of another grid so you will need 2 grids

589% 589/100 = 5 89/100

is 5 complete 100 grids and 89/100 of another grid so you will need 6 grids

1450% 1450/100 = 14 50/100

is 14 complete grids and 50/100 of another grid so you will need 15 grids

4 0

3 years ago

Which equation represents a proportional relationship? A) y = 3x 4 B) y = 3 4x C) y = 3x 4 + 1 D) y = 3 4x + 1

lesantik [10]

Answer:

A. y = 3x/4

Step-by-step explanation:

a proportional relationship between x and y is a straight line passing through the origin (0, 0).

The equation must be in the form y = kx.

y = 3x/4

y = 3/4x

8 0

4 years ago

Gordon types 2,964 words in 39 minutes. Find the unit rate.

atroni [7]

Answer:

76 words per minute

Step-by-step explanation:

2964/39=76 words per minute

8 0

3 years ago

What's sss, sas, asa, aas, and hi. when it comes to solving triangles?

tekilochka [14]

Answer:

SSS = side side side

SAS = side angle side

ASA = angle side angle

AAS = angle angle side

8 0

3 years ago