All categories

2 years ago

Simpifly (-5x2 - 3x - 7) + (-2x3 + 6x2 - 8)

Mathematics

2 answers:

ioda2 years ago

5 0

Answer:

-2x³ + x² - 3x - 15

Step-by-step explanation:

Simply combine like terms together:

-5x² - 3x - 7 - 2x³ + 6x² - 8

-2x³ + (-5x² + 6x²) - 3x + (-7 - 8)

-2x³ + x² - 3x + (-7 - 8)

-2x³ + x² - 3x - 15

BlackZzzverrR [31]2 years ago

3 0

Answer: -2x^3+x^2-3x-15

Step-by-step explanation:

As there is only addition and subtraction here, and the two groups of parenthesis are added, you can ignore the parenthesis.

Thus, simply combine like terms to get.

-2x^3+x^2-3x-15

Hope it helps <3

You might be interested in

Kevin is baking cookies. each batch of cookies uses 1/8 pound of butter. kevin has 1 3/8 pounds of butter. how many batches of c

Ronch [10]

1 3/8 / 1/8=11/8 x 8/1=11 batches.

5 0

2 years ago

Captain Sparrow and his pirate crew dug up several gold coins. They are dividing the coins amongst themselves so that each perso

Dahasolnce [82]

Answer: 150 coins

Step-by-step explanation: let the number of captain Sparrow and the crew = c

The number of gold = g

This mean each person will get g/c

If there were four fewer pirates, then each person would get 10 more coins means

g/(c - 4) = g/ c+ 10

cg = (c-4)(g+10c) ....... (1)

However, if there were 50 fewer coins, then each person would get 5 fewer coins.

(g - 50)/c = g/c - 5

g - 50 = g - 5c

5c = 50

c = 10

Substitute c in equation 1

cg = (c-4)(g+10c) ....... (1)

10g = (10 - 4)(g + 10×10)

10g = 6× (g + 100)

10g = 6g + 600

4g = 600

g = 150 gold coin.

Therefore they dig up 150 gold coin

5 0

2 years ago

Solve: 3/K+3 = 8/k-2

fomenos

Answer:

k = 1

Step-by-step explanation:

I will upload a picture with all of my work.

7 0

2 years ago

Which is an equation of the line that passes through (2, -5) and (6, 3)?

Tresset [83]

Answer: y = 2x - 9

Step-by-step explanation:

I graphed it and did the work in my head-

6 0

2 years ago

The fish population in a local stream is decreasing at a rate of 3% per year. The original population was 48,000. Write an expon

ElenaW [278]

Answer:

Results are below.

Step-by-step explanation:

Giving the following information:

Decrease rate (d)= 7%

Number of periods (n)= 7 years

Current population (PV)= 48,000

First, to calculate the future value, we need to use the following decrease exponential formula:

FV= PV*[(1+d)^-n]

After 7 years:

FV= 48,000*(1.07^-7)

FV= 29,892

8 0

2 years ago