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3 years ago

Which graph correctly represents 3x + y > 7? NEED HELP!!

Mathematics

2 answers:

patriot [66]3 years ago

6 0

First rewrite the inequality in y = form.
3x + y > 7
Subtract 3x from both sides.
y > -3x + 7
Both graphs have a -3 slope and y intersect at 7. The only difference in the shading. Choose a test point to see if it makes the inequality true. The easiest point to choose is (0,0) if our line doesn't pass through that point.

0 > -3(0) + 7
0 > 7 is false so we want the graph where (0,0) is NOT shaded. That is the one on the left.

Andru [333]3 years ago

4 0

If the blue part is what is shaded, I'd say it's Graph B. But you can double check on a great website called "https://www.desmos.com/"

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Step-by-step explanation:

Use the Pythagorean Theorem, a^2 + b^2 = c^2.

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3 years ago

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Allen needs to prepare a compound for the patient to pick up tomorrow. He needs to mix of drug A, with of drug B and of drug C.

Phoenix [80]

Answer:

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Step-by-step explanation:

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3 years ago

Use Lagrange multipliers to find the maximum and minimum values of the function subject to the given constraint. (If an answer d

andrey2020 [161]

Answer:

The maximum value is 1/27 and the minimum value is 0.

Step-by-step explanation:

Note that the given function is equal to $(xyz)^2$ then it means that it is positive i.e $f(x,y,z)\geq 0$ .

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We want that the gradient of this function is equal to zero. That is (the calculations in between are omitted)

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$\frac{\partial F}{\partial z} = 2z(x^2y^2 - \lambda)=0$

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Note that the last equation is our restriction. The restriction guarantees us that at least one of the variables is non-zero. We've got 3 options, either 1, 2 or none of them are zero.

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Suppose that x is zero. Then, from the second and third equation we have that

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If both x,y are zero, then we have the solution set $z^2=1$ . We can find the different solution sets by choosing the variables that are set to zero.

NOw, suppose that none of the variables are zero.

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Also, from the first and third equation we have that

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3 years ago

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shepuryov [24]

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sveticcg [70]

It should be B or C

Step-by-step explanation:

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