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2 years ago

1/2a - 4 Pls help Meeeeee Eeeeeeee

Mathematics

1 answer:

PolarNik [594]2 years ago

3 0

1/2a - 4
Add 4 to both sides.
1/2a = 4
Divide both sides by 1/2.
a = 8

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Joe spent $4.36 for gasoline in driving 68 miles. How much would he spend in driving 85 miles?

monitta

He will spend $5.45 if he is driving 85 miles.
How can we figure this out mathematically?
4.36/68=0.064
That means every mile he drives he spends on average 6 cents.
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Please vote my answer brainliest! Thanks.

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2 years ago

Help pleaseeeeeeeeee

Alex17521 [72]

Answer:

39°
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28°

Step-by-step explanation:

$Hypotenuse = 32\\Adjacent = 25\\Angle\:\alpha \:=?\\Using \: SOHCAHTOA ;\\Cos \:\alpha = \frac{adj}{hyp} \\Cos \:\alpha = \frac{25}{32}\\\\\alpha = Cos^-^1\frac{25}{32} \\\alpha =38.62\\\\\alpha = 39$

$Opposite = 8\\Adjacent = 16\\\alpha =?\\Using SOHCAHTOA\\Tan\:\alpha = \frac{opp}{adj} \\Tan\:\alpha = \frac{8}{16} \\Tan \:\alpha =1/2\\\alpha = Tan^-^11/2\\\\\alpha =26.56\\\alpha =27$

$Hypotenuse = 41\\Opposite = 19\\\alpha = ?\\Using\: SOHCAHTOA\\Sin\:\alpha = \frac{opp}{hyp} \\Sin \:\alpha =\frac{19}{41}\\\\\alpha =Sin^-^1 (19/41)\\\\\alpha =27.6\\ \alpha =28$

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Step-by-step explanation:

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