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

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Walters savings account has a balance of $273. After 5 years, what will the amount of interest be at 5% compounded quarterly?

I am Lyosha [343]

The answer is $350

The formula is as follows: $P(1+r/n) ^{nt}$

P: Principal Amount : $273
r: Rate of interest: 5%
n: number of times the interest is compounded: 4 (Since Quarterly)
t: number of years : 5

7 0

3 years ago

A cone with a mass of 6 g has a radius measuring 5 cm and a height of 2 cm. What is its density?

AlekseyPX

Volume of a cone is equal to pi*r^2*(h/3)

3.14*5^2*2/3 = 52.36 cubic cm.

Density = mass/volume

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Round to 2 decimal places to get D.0.11 g/cm^3

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3 years ago

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9x (-2y + 5x) - 4 xy (6x-3y) please the person who answers will be marked as brainliest. please show working

Alenkasestr [34]

Answer:

See explanation

Step-by-step explanation:

$9x(-2y+5x)-4xy(6x-3y)$

By the distributive property this is equal to:

$9x(-2y)+9x(5x)-4xy(6x)-4xy(-3y)=\\\\-18xy+45x^2-24x^2y+12xy^2$

Hope this helps!

4 0

3 years ago

Factories 24a³ + 37a² – 5a

Semenov [28]

Answer:

a(8a-1)(3a+5)

Step-by-step explanation:

24a³ + 37a² – 5a =

a ( 24a²+ 37a -5) =

a( 24a² +40a -3a -5) =

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2 years ago

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Lina20 [59]

Your answer is C.)x<2

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3 years ago

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