2 years ago

One tray holds eight sandwiches. If there are 30 sandwiches in all how many trays are needed

Mathematics

1 answer:

astra-53 [7]2 years ago

4 0

4 trays are needed because your number is 3.75 and you need another tray for the rest

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gregori [183]

Answer:

Step-by-step explanation:

logₓ 7 = 3

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Take cube root both sides

$x= \sqrt[3]{7}$

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2 years ago

7(x - 6) = 28??????????????

bonufazy [111]

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7x - 42

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Step-by-step explanation:

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3 years ago

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Virty [35]

Answer:

a) $P (x,y) \approx (0.1,1.05)$ , b) $P(x,y) = (0.07,1.04)$ .

Step-by-step explanation:

a) The graphic is enclosed to the problem. By visual inspection, an absolute maximum is found.

$P (x,y) \approx (0.1,1.05)$

b) The exact method consists in the application of the First and Second Derivative Tests. First and second derivatives are, respectively:

$f'(x) = 1 - 14\cdot x$

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The First Derivative Test consists in equalizing the first derivative to zero and solving the expression:

$1 - 14\cdot x = 0$

$x = 0.07$

According to the second derivative, the critical point leads to a maximum. The remaining component is determined by evaluation the polynomial:

$y = 1 +0.07-7\cdot (0.07)^{2}$

$y = 1.04$

The exact solution is $P(x,y) = (0.07,1.04)$ , indicating that graphic solution leads to a good approximation.

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Step-by-step explanation: trust

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