3 years ago

4x^2 + n (n+x) x=3 n=5

Mathematics

1 answer:

Vika [28.1K]3 years ago

3 0

Mm dont know but keep trying

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A 14 gram sample of a substance that's used to preserve fruit and vegetables has a k-value of 0.1092. Find the substance's half-

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Answer:

t = 6.3

Step-by-step explanation:

N=Noe^(-kt)

No = 14 grams

k = .1092

We want to find t when N = 7 or 1/2 of 14

N=Noe^(-kt)

7 = 14 e ^ (-.1092t)

Divide each side by 14

1/2 = e ^ (-.1092t)

take the natural log of each side

ln (1/2) = ln e ^ (-.1092t)

ln (1/2) = -.1092t

Divide each side by -.1092

ln (1/2)/ -.1092 = t

t≈6.3475

Rounding to the nearest tenth

t = 6.3

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He function y = 2x2 + 4x – 6 is graphed.

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Step-by-step explanation:

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3 years ago

Find the perimeter of a regular pentagon with each side measuring 6cm.

Black_prince [1.1K]

Answer:

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Step-by-step explanation:

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3 years ago

(2x-3)^2=49<br><img src="https://tex.z-dn.net/?f=%282x%20-%203%20%29%20%5E%7B2%7D%20%3D%2049" id="TexFormula1" title="(2x - 3 )

inna [77]

$(2x-3)^2=49\iff2x-3=\pm\sqrt{49}\\\\2x-3=-7\ \vee\ 2x-3=7\ \ \ |+3\\\\2x=-4\ \vee\ 2x=10\ \ \ \ |:2\\\\x=-2\ \vee\ x=5$

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3 years ago