(I) is not necessarily true. Consider the function <em>f(x)</em> = - |<em>x</em>| on the interval [-1, 1]. There's a maximum at <em>x</em> = 0, but <em>f'</em> (0) does not exist.
But both (II) and (III) are true, so the answer is A.
Your answer is 80. A triangle’s angles add up to 180 degrees. Therefore, you need to subtract 30 and 70 from 180 to find your answer: 180-(30+70)=80 or 180-70-30=80
A number line goes from negative 10 to positive 10. An open circle appears at negative 9. The number line is shaded from negative 9 through positive 10.
Step-by-step explanation:
The inequality is given as;
-3x-7<20 which can be solved as
-3x < 20+7 -----collecting like terms
-3x < 27 -------divide both sides by -3
x > -9 -----change the sign direction because you divided by
plotting the solution x > -9 on a graph tool gives
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solving inequalities by graph :brainly.com/question/11688212
Keywords : number line, open circle, solution, graph, inequality
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To figure out the answer just divide 664 by 135, then round to the nearest tenth.
Answer:
1080 degrees
Step-by-step explanation:
A regular octagon has 135 degrees per interior angle. To find the sum, add 135 for each angle. There are 8 interior angles.
8*135 = 1,080