Recognize the differnce of 2 perfect sqares
recall that a²-b²=(a-b)(a+b)
so
169x²-64=
(13x)²-(8)²=
(13x-8)(13x+8)
Answer:
$52.00
Step-by-step explanation:
if he makes 13.00 per hour, for four hours, you just times 13 by 4 to get 52.
Answer:
What is the probability formula?
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In general, the probability is the ratio of the number of favorable outcomes to the total outcomes in that sample space. It is expressed as, Probability of an event P(E) = (Number of favorable outcomes) ÷ (Sample space).
1,925 is close to 2,000
so 2,000 x 7 = 14,000
1,925 x 7 = ?
5 x 7 = 35
20 x 7 = 140
900 x 7 = 6,300
1,000 x 7 = 7,000
so 7,000 + 6,300 + 140 + 35 = 13,475 and 13,475 is close to 14,000 or 13,500 or 13,470.
Hope this helps even though a little confusing! ;D
