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3 years ago

Rachel jogged along a trail that was 1 fourth of a mile long . she jogged along a trail 8 times. how many miles did she jog.

Mathematics

2 answers:

vesna_86 [32]3 years ago

7 0

I think that the answer is most likely two

Aleksandr-060686 [28]3 years ago

3 0

2 miles is what I think because it's 8

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What is the solution to he equation (y/y-4)-(4/y+4)=3^2/y^2-16

kicyunya [14]

Answer:

$y=\pm i \sqrt{7}$

Step-by-step explanation:

Given equation is $\frac{y}{\left(y-4\right)}-\frac{4}{\left(y+4\right)}=\frac{3^2}{(y^2-16)}$

Factor denominators then solve by making denominators equal

$\frac{y}{\left(y-4\right)}-\frac{4}{\left(y+4\right)}=\frac{3^2}{(y^2-16)}$

$\frac{y}{\left(y-4\right)}-\frac{4}{\left(y+4\right)}=\frac{9}{(y+4)\left(y-4\right)}$

$\frac{y\left(y+4\right)-4\left(y-4\right)}{\left(y-4\right)\left(y+4\right)}=\frac{9}{(y+4)\left(y-4\right)}$

$y\left(y+4\right)-4\left(y-4\right)=9$

$y^2+4y-4y+16=9$

$y^2=9-16$

$y^2=-7$

take squar root of both sides

$y=\pm \sqrt{-7}$

$y=\pm i \sqrt{7}$

Hence final answer is $y=\pm i \sqrt{7}$ .

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4 years ago

Simplify:<br> 3x3 (4x4 + 3y)

luda_lava [24]

Answer:

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Step-by-step explanation:

3x3(4x4+3y)

9(16+3y)

144+27y

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3 years ago

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Rudik [331]

The answer is 4/10*cos 01

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3 years ago

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Reika [66]

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=> 4x + 36 + 5x = 9x - 36

=> 9x + 36 = 9x - 36

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You can see that the equation doesn't hold true.

So there is no solution for this equation.

Answer is C. no real solutions

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4 years ago

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Ann [662]

Answer:

9, 10

Step-by-step explanation:

9² = 81

10² = 100

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3 years ago