Answer:
28
Step-by-step explanation:
The best way is to check all answers. lets check answer A first.
Take the equation y > -3x +3 and substitute 2 for x and -5 for y.
(-5)> -3(2) + 3
-5 > -6 + 3
-5 > -3
we know this is not true so A is not the answer. because it is an invalid solution.
Lets check B
(-2)>-3(5) + 3
-2 > -15 +3
-2 > -12
we know this is true so it is a valid solution Now we have to check the other equation with the same point.
y> x +2
5> (-2)+2
5> 0
we know this is true so its a valid solution.
This means B the correct answer.
Answer:
32 minutes.
Step-by-step explanation:
third place took 34 minutes.
second place took 33 minutes.
first place took 32 minutes.
The answer is: [A]: (x + 2) (x² − 2x + 4).
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Explanation:
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Note the formula:
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a³ + b³ = (a + b) (a² − ab + b²)<span>
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x</span>³ + 8 can be written as x³ + 2³ ; since 2³ = 8
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So, using the formula:
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a³ + b³ = (a + b) (a² − ab + b²) ;
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x³ + 8 ; or, x³ + 2³ ; can be factored; where a = x and b = 2.
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→ Substitute these values for "a" and "b"; and rewrite:
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→ x³ + 2³ = (x + 2) (x² - x*2 + 2²) ;
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→ Simplify, and rewrite as:
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→x³ + 8 = x³ + 2³ = (x + 2) (x² − 2x + 4) ;
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→which is our first answer choice, "[A]".
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