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Lina20 [59]
2 years ago
7

Determine what value(s) for the variable would make each algebraic equation a

Mathematics
1 answer:
Troyanec [42]2 years ago
3 0

Answer:

81/2=40.5

Step-by-step explanation:

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Write an equation in slope-intercept form for the line that has a slope of -4/5 and passes through (0, 7).
patriot [66]

Answer:

A. y = -\frac{4}{5}x + 7

Step-by-step explanation:

Slope intercept form is y = mx + b where m is the slope and b is the y-intercept

<em>It gives us the slope, so we can plug that in:</em> y = -\frac{4}{5}x + b

<em>Next, it gives us a point, so we can plug in the x and y into our equation and solve for b when (x, y)</em>

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<em>Last, complete our equation:</em>

y = -\frac{4}{5}x + b

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2 years ago
Plutonium-240 decays according to the function Q(t) = Qoe^-kt
LuckyWell [14K]

Answer:

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  ln(1/3) = -0.00011t . . . . . . take natural logs

  t = ln(1/3)/(-0.00011) . . . . divide by the coefficient of t

  t ≈ 9990 . . . years

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