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nirvana33 [79]
3 years ago
13

I need help with 6,8,9

Mathematics
1 answer:
olga_2 [115]3 years ago
3 0
Number 6: Every time you add 2.4, so the next number would be 11.1
Number 8: 24 1/2 (The sequence of numbers subtracts 5.5 or 5 1/2 every time.)
Number 9: 29.6 (The sequence of numbers subtracts 7.1 every time)
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Factor x3+x2+x+1 by grouping. What is the resulting expression
zmey [24]

Answer:

(x+1) (x^2+1)

Step-by-step explanation:

x^3+x^2+x+1

Factor by grouping

x^3+x^2           +x+1

Factor out x^2 from the first group  and 1 from the second group

x^2( x+1)  + 1( x+1)

Factor out (x+1)

(x+1) (x^2+1)

7 0
3 years ago
Read 2 more answers
Add the following polynomials, then place the answer in the proper location on the grid. Write answer in descending powers of x.
CaHeK987 [17]

Answer:

-x^5+3x^4+16x^3+7x^2-3x+6

Step-by-step explanation:

Given polynomials are:

x^5-4x^4+7x^3+8, 9x^3+7x^2-10 and -2x^5+7x^4-3x+8

Now we need to add the given polynomials, then place the answer in the proper location on the grid. Also we need to write answer in descending powers of x.

So let's add them by combining like terms:

x^5-4x^4+7x^3+8+9x^3+7x^2-10-2x^5+7x^4-3x+8

-x^5+3x^4+16x^3+7x^2-3x+6

Hence final answer in descending order is -x^5+3x^4+16x^3+7x^2-3x+6

6 0
2 years ago
Anyone good at trigonometry please help
s344n2d4d5 [400]

to find the vertical height

 multiply the tangent of the angle by the horizontal distance

 so tan(12) x 5 = 1.0628

 rounded to nearest hundredth = 1.06 miles


6 0
2 years ago
!Help Help Help! lols
Gwar [14]

the Answer is c. I think

6 0
3 years ago
Read 2 more answers
Melanie saves $20 every month in her savings account. She
OLga [1]

Let x represent the amount of months she has been saving for.

20x - 60 = 280

Solve for x.

20x - 60 = 280

~Add 60 to both sides

20x - 60 + 60 = 280 + 60

~Simplify

20x = 340

~Divide 20 to both sides

20x/20 = 340/20

~Simplify

x = 17

Therefore, Melanie has saved for 17 months.

Best of Luck!

8 0
3 years ago
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