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3 years ago

It says solve equation. -9/4v+4/5=7/8

Mathematics

1 answer:

oksano4ka [1.4K]3 years ago

8 0

I hope this helps you

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83 x 42<br> 24 x17<br> 1 divided by 7

Alex

Answer:

83 x 42 = 3486

24 x 17 = 408

1 ÷ 7 = 0.14285714285 (decimal) or 1/7 (fraction)

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The light intensity I (in lumens) at a depth of x feet in Lake Elizabeth is given by the formula log (StartFraction Upper I Ove

antiseptic1488 [7]

Answer:

The light intensity at a depth of 24 feet is 3.0143 lumens.

The light intensity will be 7 lumenus at the depth of 9.3732 feet approximately.

Step-by-step explanation:

Consider the provided formula.

$log(\frac{I}{12})=-0.025x$

Where I is the intensity of light and x is the depth.

Part (A) Find the light intensity at a depth of 24 feet.

Substitute x=24 in above formula.

$log(\frac{I}{12})=-0.025(24)$

$log(\frac{I}{12})=-0.6$

$\frac{I}{12}=10^{-0.6}$

$\frac{I}{12}=0.2512$

$I=3.0143$

Hence, the light intensity at a depth of 24 feet is 3.0143 lumens.

Part (B) At what depth is the light intensity 7 lumens

Substitute I=7 in above formula.

$log(\frac{7}{12})=-0.025x$

$-0.23433=-0.025x$

$0.23433=0.025x$

$x=\frac{0.23433}{0.025}$

$x=9.3732$

Hence, the light intensity will be 7 lumenus at the depth of 9.3732 feet approximately.

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3 years ago

I’m not exactly sure how to do this precalc problem.

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Step-by-step explanation:

so answer is √2-√6/4

Hope it helps u............

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