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3 years ago

Please help I'm behind

Mathematics

1 answer:

SIZIF [17.4K]3 years ago

3 0

Answer:

a= -4

Step-by-step explanation:

2^-4 ×2^a =2^-8

2^-4+a = 2^-8

both 2 are cancelled by dividing

then,

-4+a = -8

a = -8+4

a= -4

hope this helps you

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Answer:

Step-by-step explanation:

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A company makes rubber rafts. 12% of them develop cracks within the first month of operation. 27 new rafts are randomly sampled

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The probability that the number of tested rafts that develop cracks is no more than 3 is <u>.00006</u>.

The true proportion, p for the population is given to 0.12.

Thus, the mean, μ, for the sample = np = 27*0.12 = 3.24.

The sample size, n, given to us is 27.

Thus, the standard deviation, s, for the sample can be calculated using the formula, s = √{p(1 - p)}/n.

s = √{0.12(1 - 0.12)}/27 = √0.003911 = 0.0625389.

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1 year ago

According to the graph, what is the value of the constant in the equation below?

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Answer:

t-shirts: 2790

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Step-by-step explanation:

Given the function:

p(x) = -x³ + 4x² + x

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Using quadratic formula:

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$x_1 = \frac{-8 + 8.72}{-6}$

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$x_2 = \frac{-8 - 8.72}{-6}$

$x_2 = 2.79$

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d²p/dx² at x = -0.12: -6(-0.12) + 8 = 8.72 > 0

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Then, he should prints 2.79 thousands, that is, 2790 t-shirts to make maximum profits.

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