2 years ago

I HATE THIS; / PLS SOMEONE JUST ANSWER MY QUESTIONS FOR ONCE ;(

Mathematics

2 answers:

Sunny_sXe [5.5K]2 years ago

7 0

What’s your question do you hate cuz nobody is answering your questions ?

Annette [7]2 years ago

5 0

Answer:

well what's the question my guy

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What is the solution(s) to the equation 5a2 - 44 = 81?

taurus [48]

Answer:

Step-by-step explanation:

5a^2 - 44 = 81 Add 44 to both sides

5a^2 = 81 + 44 Collect like terms

5a^2 = 125 Divide both sides by 5

a^2 = 125/5

a^2 = 25 Take the square root of both sides

√a^2 = √25

a = +5

a = -5

The answer is B

7 0

2 years ago

Consider the series 4 + 12 + 36 ... Find the sum of the first 9 terms.

jeyben [28]

Answer:

39364

Step-by-step explanation:

You can simplify the equation to make 4(1+3+9...) The nth term is therefore $3^{n-1}$ so u can substitute that into the equation so 4( $3^{n-1}+ 3^{n} + 3^{n+1}$ ..). This would simplify to 4( $3^0 +3+3^2$ + $3^3+3^4+3^5+3^6+3^7+3^8$ ). By simplifying this, you can make it so 4( $2^2+6^2+18^2+42^2+81^2$ ) = 4(4+36+324+2916+6561) =39364