3 years ago

Help me in this one pls I give 15 pts

Mathematics

1 answer:

scoundrel [369]3 years ago

6 0

Answer:

23.7555090109

Step-by-step explanation:

sin= opposite/hypotenuse

sin(53) = BC/60cm

BC= sin(53)*60 = 23.7555090109

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jill measured the length of her eraser. She wrote 5 on her paper without the unit. Which metric unit of measure should Jill incl

choli [55]

Its either centimeters or inches.
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7 0

3 years ago

Can someone solve this for me?

Helga [31]

well, we know it's a rectangle, so that means the sides JK = IL and JI = KL, so

$\stackrel{JK}{3x+21}~~ = ~~\stackrel{IL}{6y}\implies 3(x+7)=6y\implies x+7=\cfrac{6y}{3} \\\\\\ x+7=2y\implies \boxed{x=2y-7} \\\\[-0.35em] ~\dotfill\\\\ \stackrel{JI}{6y-6}~~ = ~~\stackrel{KL}{2x+20}\implies 6(y-1)=2(x+10)\implies \cfrac{6(y-1)}{2}=x+10 \\\\\\ 3(y-1)=x+10\implies 3y-3=x+10\implies \stackrel{\textit{substituting from the 1st equation}}{3y-3=(2y-7)+10} \\\\\\ 3y-3=2y+3\implies y-3=3\implies \blacksquare~~ y=6 ~~\blacksquare ~\hfill \blacksquare~~ \stackrel{2(6)~~ - ~~7}{x=5} ~~\blacksquare$