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Rudik [331]
2 years ago
13

Add. 5x2 - 5x+1 + 2x2 +9x-6

Mathematics
1 answer:
kramer2 years ago
3 0

Answer:

4x+9

Step-by-step explanation:

10-5x+1+4+9x-6

9x-5x+10+1+4-6

4x+9

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Answer:

9.8ft

Step-by-step explanation:

7 0
3 years ago
PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!!
s2008m [1.1K]

Answer: 912

===================================

Work Shown:

The starting term is a1 = 3. The common difference is d = 5 (since we add 5 to each term to get the next term). The nth term formula is

an = a1+d(n-1)

an = 3+5(n-1)

an = 3+5n-5

an = 5n-2

Plug n = 19 into the formula to find the 19th term

an = 5n-2

a19 = 5*19-2

a19 = 95-2

a19 = 93

Add the first and nineteenth terms (a1 = 3 and a19 = 93) to get a1+a19 = 3+93 = 96

Multiply this by n/2 = 19/2 = 9.5 to get the final answer

96*9.5 = 912

I used the formula

Sn = (n/2)*(a1 + an)

where you add the first term (a1) to the nth term (an), then multiply by n/2

-----------------

As a check, here are the 19 terms listed out and added up. We get 912 like expected.

3+8+13+18   +23+28+33+38    +43+48+53+58    +63+68+73+78   +83+88+93 = 912

There are 19 values being added up in that equation above. I used spaces to help group the values (groups of four; except the last group which is 3 values) so it's a bit more readable.

5 0
3 years ago
Read 2 more answers
Please I’ll give u brainlesst there is an image attached
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Answer:

I could only find a single semi-complete question on that paper due to the quality of the picture.  <u>The carbon dioxide and water escape from the tube, because as gases, they do not have a definite shape or volume, and instead expand to fit whatever container they are in.</u>

Hope it helps

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2 years ago
The slope (b1) represents
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Your answer would be 
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3 years ago
If Sam has 5 blue shirts and 7 red shirt, what is Sam's ratio of blue shirts to red shirts?
saw5 [17]

Answer: 0.71428 or 5:7 or 5/7

Step-by-step explanation: just divide on a calculator

5 0
2 years ago
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