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GenaCL600 [577]
3 years ago
11

Need help with math work

Mathematics
2 answers:
gizmo_the_mogwai [7]3 years ago
4 0
Plug in x = 12 and y = -5 into the given equation:-

3(12) - 3(-5) = 36 + 15 = 51  Not 21

So (12,-5) is not a solution.
frosja888 [35]3 years ago
3 0
Review:  a "solution" to an equation is a numerical value (or set of values) that makes the equation true. 

Here you are given the linear equation 3x - 3y = 21 and the point (12,-5).  If x=12 with y= -5, then (12,5) is a solution of 3x - 3y = 21.

Substituting, 3(12) - 3(-5) = 21.  Is this true or false?

36 + 15 = 21 is obviously not true.  Thus, (12, -5) is NOT a solution of 3x - 3y = 21.
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8 0
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Hareem takes a medicine to control his blood pressure. he takes a 25 mg pill in the morning. suppose that 60% of the medicine is
Vikentia [17]

The recursive definition for the amount of the blood pressure medicine in hareem bloodstream after n hours would be a_1=25, a_n = 0.60_{n-1} +25

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<h3>What is the recursive rule?</h3>

A rule is defined such that its definition includes itself.

Example:

F(x) = F(x-1) + c

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Hareem takes medicine to control his blood pressure.

he takes a 25 mg pill in the morning.

Suppose that 60% of the medicine is processed by hareem's body by the time he takes a second 25 mg pill in the evening.

So, the recursive definition for the amount of the blood pressure medicine in hareem bloodstream after n hours would be;

a_1=25, a_n = 0.60_{n-1} +25

Hence, option B is correct.

Learn more about the recursive rule here:

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5 0
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Plz help me this hard
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