Answer:
The answer is 8
Step-by-step explanation:
12*10=120 120/15=8
Hello,
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Answer B
(x^3-2^3=(x-2)(x²+2x+4)
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The volume is 96.
v=l*w*h
v=6*3*3=54
v=2*3*7=42
54+42=96
Hope this helps
Answer:
67+25=92
Step-by-step explanation:
65+25
separate tens and ones
60+7+20+5
reorganize
60+20+7+5
add tens to tens and ones to ones
80+12
separate tens and ones
80+10+2
add
90+2
add
92
The count the number of times the sign changes
that is how many positive roots there are
if you get a number that is ≥2, then count down by 2's ending at 0
sub -x for x and evaluate
count change in sign again
that is how many negative roots there are
if you get a number that is ≥2, then count down by 2's ending at 0
so
-2x^3+3x^2-5x-2=0
-,+,-,-
1 2
2 or 0 positive roots
x to -x
2x^3+3x^2+5x-2=0
+,+,+,-
1
1 negative root
2 or 0 positive roots and 1 negative root
D is answer
