All categories

3 years ago

Adding and subtracting polynomials. help?

Mathematics

2 answers:

vekshin13 years ago

8 0

Answer:

Step-by-step explanation:

1. Remove brackets

2. add like terms (-8y and 2y)

3. copy the un-addble terms behind

PSYCHO15rus [73]3 years ago

6 0

Answer:

Third choice

Step-by-step explanation:

Add and subtract like terms:

-2xy - 6xy = -8xy

-8y - 2y = -10y

-4y^4 + y^4 = -3y^4

Combine them together, and you get:

-3y^4 - 8xy -10y

You might be interested in

Equation of the line which passes through point (0,5) at gradient of - 1

bonufazy [111]

Answer:

y = - x + 5

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Here gradient (slope) = - 1 and (0, 5) ⇒ c = 5

y = - x + 5 ← equation of line

5 0

3 years ago

What is the correct way to write 10^3 in factored form?

faltersainse [42]

10 x 10 x 10, I believe this is the form you mean.

8 0

3 years ago

In a pool of water filled to a depth of 10 ft, calculate the fluid force on one side of a 3 ft by 4 ft rectangular plate if it r

marin [14]

9514 1404 393

Answer:

6,364.8 lb

Step-by-step explanation:

The centroid of the plate is its center, so is 1.5 ft above the bottom of the pool, or 8.5 ft below the surface. The area of the plate is (3 ft)(4 ft) = 12 ft². Then the fluid force is ...

(62.4 lb/ft³)(8.5 ft)(12 ft²) = 6,364.8 lb

4 0

3 years ago

Solve for x and y it says i need 20 characters so i’m writing more

fgiga [73]

Answer:

 For y :

From pythogras theorem:

${ \tt{ {(hypotenuse)}^{2} = {(adjacent)}^{2} + {(opposite)}^{2} }} \\ { \tt{ {(7 + 3)}^{2} = \{( {x}^{2} + 9) \} {}^{2} + {y}^{2} }} \\ { \tt{100 = ( {x}^{4} + 18 {x}^{2} + 81) + {y}^{2} }} \\ { \tt{ {y}^{2} = 100 - {x}^{4} - {18x}^{2} - 81 - - - - (a) }}$

For the second largest inner triangle;

${ \tt{ {y}^{2} = {7}^{2} + {x}^{2} }} \\ { \tt{ {y}^{2} - = 49 + {x}^{2} - - - - (b) }}$

Equate (a) and (b):

${ \tt{100 - {x}^{4} - 18 {x}^{2} - 81 = 49 + {x}^{2} }} \\ { \tt{100 - 49 - 81 = {x}^{4} + 19 {x}^{2} }} \\ { \tt{ - 30 = {x}^{2}( {x}^{2} + 19x)}} \\ { \boxed{ \tt{for \: \: {x}^{2} = - 30...imaginary \: value }}} \\ {\boxed{ \tt{for \: \: ( {x}^{2} + 19x ) \: = - 30}}} \\ { \tt{ {x}^{2} + 19x + 30 = 0 }} \\ { \tt{}}$

solve the equation to get values of x, which will give you y

7 0

1 year ago

-2(x + 5) = 4, what is x?

svp [43]

Answer:

-7

Step-by-step explanation:

-2 ( x + 5 ) = 4

-2x - 10 = 4

+10 +10

-2x = 14

divide by -2

x = -7

8 0

3 years ago

Read 2 more answers