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2 years ago

I don’t get this pls help

Mathematics

2 answers:

diamong [38]2 years ago

8 0

Answer: 12x⁵ + 1x³ + 9x² + 4

Step-by-step explanation:

The expression is:

(4 + 3x² + 8x³) + (-7x³ + 12x⁵ + 6x²)

Now, looking at this expression, we can see a '+' behind the expression in the parenthesis.

To make this easier to distribute, you can change the expression into:

(4 + 3x² + 8x³) + 1 (-7x³ + 12x⁵ + 6x²)

So now you're distributing '+ 1' to the expression in the parenthesis

(+ 1 × -7x³) + (+ 1 × 12x⁵) + (+ 1 × 6x²)

-7x³ + 12x⁵ + 6x²

Now the expression is:

(4 + 3x² + 8x³) -7x³ + 12x⁵ + 6x²

The parenthesis on '4 + 3x² + 8x³' can be removed.

4 + 3x² + 8x³ -7x³ + 12x⁵ + 6x²

Now move all like terms together. I prefer to order the expression from the variable and coefficient that have the greatest exponent to those that have the least exponent.

12x⁵ + 8x³ - 7x³ + 3x² + 6x² + 4

12x⁵ + x³ + 9x² + 4

Hope this helped!

SashulF [63]2 years ago

6 0

Answer:

4 + 9x² + 1x³ + 12x⁵

Step-by-step explanation:

3x² + 6x² = (3 + 6)x² = 9x²

4 + 3x² + 8x³ + (-7x³ + 12x⁵ +6x²) = 4 + 3x² + 6x² + 8x³ - 7x³ + 12x⁵

= 4 + 9x² + 1x³ + 12x⁵

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A security guard uses 20 minutes of every hour to walk outside the school, leaving the remaining

Troyanec [42]

Answer:

40/20, 40:20, 40 to 20

Step-by-step explanation:

20min/1hr

40min/1hr

Question order asks ratio from outside time to inside time so the 40 would come first. also, all the above are correct. You can write a ratio as a fraction, with a colon, or with the word to.

6 0

3 years ago

Convert the following units of time. a. 5 years to days b. 8 weeks to days c. 7 days to weeks d. 336 hours to seconds e. 12 hour

AysviL [449]

Answer:

A. 1,825 days

B. 56 days

C. 1 week

D. 1,209,600 seconds

E. 43,200 seconds

F. 2 hours

Step-by-step explanation:

A. 1 year = 365 days, then

5 years = $5\cdot 365$ days = 1,825 days.

B. 1 week = 7 days, then

8 weeks = $8\cdot 7$ days = 56 days.

C. 7 days = 1 week.

D. 1 hour = 3,600 seconds, then

336 hours = $336\cdot 3,600$ seconds = 1,209,600 seconds.

E 12 hours = $12\cdot 3,600$ seconds = 43,200 seconds.

F. 3,600 seconds = 1 hour, then

7,200 seconds = $\dfrac{7,200}{3,600}$ hours = 2 hours.

3 0

3 years ago

Read 2 more answers

How do you find the equations of the vertical and horizontal asymptotes for a graph when you only have the graph and no function

-BARSIC- [3]

Answer:

See below for answer and explanations (as well as an attached graph)

Step-by-step explanation:

Pay attention to the behavior of the asymptotes. If the asymptotes are approaching a certain x-value or y-value, then that value is undefined for the function.

Take for example $y=\frac{1}{x}$ :