Mathematics
nonhlanhlaskhos
7

(please help. I attached pictures .)

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Peick965

4) Area=(base x height) / 2 area=24 in² therefore: (b*3b)/2=24 in² 3b²/2=24 in² b²=(24*2)/3 in² b²=16 in² b=√(16 in²)= 4 in answer: 4 in 5) if x=9 x²+z=103 (9)²+z=103 81+z=103 z=103-81=22 if x=-9 (-9)²+z=103 81+z=103 z=103-81=22 Answer: 23 1) n²-49=0 n²=49 n=⁺₋√49=⁺₋7 Answer: ⁺₋7 2) x²+64=0 x²=-64 x²=⁺₋√-64  These numbers are not real. Answer:no solution 3) area=slide² slide=+√area slide=+√(144x²)=12x answer: 12 x

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