3 years ago

Find the sum or difference of the polynomials. Write your answer in descending

Mathematics

2 answers:

nikitadnepr [17]3 years ago

5 0

Answer:

-2x^2-5x-3

Step-by-step explanation:

(3x^2 – 3x+6) - (5x^2 + 2x + 9)

Distribute the minus sign

(3x^2 – 3x+6) - 5x^2 - 2x - 9

Combine like terms

3x^2 -5x^2 -3x-2x +6-9

-2x^2-5x-3

djyliett [7]3 years ago

3 0

-2x^2-5x-3

Just distribute the negative, then combine like terms.

You might be interested in

PLEASE HELP !!!! brainliest anwser to the person who

Nostrana [21]

The answer is b
it's a special triangle

3 0

3 years ago

Read 2 more answers

Marcus mixing blue paint and yellow paint the ratio of 2 to 3 to make a red paint he wants to make 45 L of repaint he began to m

marissa [1.9K]

Answer:

do you have any image of the question? If yes please pose here.

3 0

2 years ago

Read 2 more answers

Steve ordered Plastic cases for storing his baseball cards each case has a length of 12 cm a width of 6.5 cm and a height of 1.2

BigorU [14]

Volume for rectangular prism is l x w x h
12cm x 6.5cm x 1.25cm = 97.5cm^3

3 0

3 years ago

Find sin θ for θ = 30° HINT: Draw the corresponding special right triangle to find the trigonometric values.

kow [346]

Answer: 1/2

do you have a unit circle?

Step-by-step explanation:

5 0

3 years ago

Determine the unknown angle measures, to the nearest degree, in the diagram provided.

serg [7]

Answer:

a is 53.8°, and b is 36.2°

Step-by-step explanation:

Using sine trig rule:

${ \boxed{ \bf{ \sin(b) = \frac{opposite}{hypotenuse} }}}$

${ \tt{ \sin(b) = \frac{78}{132} }} \\ \\ { \tt{b = { \sin }^{ - 1}( \frac{78}{132} ) }} \\ \\ { \tt{b = 36.2 \degree}}$

Summation of angles of triangle:

${ \tt{a + b + 90 \degree = 180 \degree}} \\ { \tt{a + 36.2 \degree + 90 \degree = 180 \degree}} \\ { \tt{a = (180 - 36.2 - 90) \degree}} \\ { \tt{a = 53.8 \degree}}$

7 0

3 years ago