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Alika [10]
3 years ago
14

Simplify (7/9a+9/7b)^2-ab

Mathematics
1 answer:
lianna [129]3 years ago
7 0
Ab+49/81a^2+81/49b^2
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2 years ago
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Write an equation of the line that passes through (-4,1) and is perpendicular to the
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Answer:

line1:y=2x+3

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Let line2 be the line passes through (-4,1)and perpendicular to line1.

Because line2 and line1 are perpendicular, (gradient of line2) (gradient of line1) =-1

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Equation of line2:y-y1 =m(x-x1)

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8 0
3 years ago
On a biased dice the probability of getting 1 is 0.3. The ice is rolled 150 times. How many ones would you expect to roll?
Montano1993 [528]

Answer:  45

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Work Shown:

n = number of rolls = 150

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n*p = expected number of "1"s that show up out of the 150 rolls

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We expect about 45 ones will show up.

8 0
2 years ago
(PLS HELP)<br> Choices:<br> A. 120cm<br> B. 117cm<br> C. 101cm<br> D. 350cm
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Answer:

117

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13*9=117

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