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Norma-Jean [14]
3 years ago
15

Plz help w this math problem

Mathematics
1 answer:
Svetllana [295]3 years ago
6 0

Answer:

• for x = 2a√t, make t the subject:

{ \tt{x = 2a \sqrt{t} }} \\  \\ { \tt{ \sqrt{t}  =  \frac{x}{2a} }} \\  \\ { \boxed{ \tt{t =  \frac{ {x}^{2} }{4 {a}^{2} } }}}

• then find y:

{ \tt{y =  {ar}^{2}  - 2at}} \\  \\ { \tt{y =  {ar}^{2} - 2a( \frac{ {x}^{2} }{4 {a}^{2} } ) }} \\  \\ { \boxed{ \tt{y =  {ar}^{2} -  \frac{ {x}^{2} }{2a}  }}}

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A dealer bought an item for $20 sold it for 24 bought it for 25
yuradex [85]

Answer:

$3

Step-by-step explanation:

Started with $20 Sold for $24 Bought it for $25 Then sold it for $28

so, $24 -$20= so she made $4.

then she bought it for $25-$24= so she only made $1

Finally she sold it for $28-$25 so she made a total of $3

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3 years ago
Stephanie sold half of her comic books and then bought five more. She now has 23. How many comic books did she start with?
yulyashka [42]

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9 comic books

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23 - 5 = 18

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3 years ago
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bagirrra123 [75]

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3 years ago
Find the area of the triangle.<br> 7 yd<br> 24 yd
tino4ka555 [31]

Answer:

A=84 square yards

Step-by-step explanation:

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A=84

6 0
3 years ago
Read 2 more answers
7 Movie tickets cost $ 42. At this rate, what is the cost per ticket?
ioda
1.) $6 per ticket (42 divided by 7)
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3.) $1.10 (7 divided by 7 is .22, .22x5=1.10
that’s all i’m answering cuz ur only giving 5 points for 5 questions lol no
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3 years ago
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