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choli [55]
3 years ago
10

8/9k + 9/5 = -4 - 9/7k

Mathematics
1 answer:
Mamont248 [21]3 years ago
7 0

Answer:

k=-1827/685

Step-by-step explanation:

8/9k+9/5=-4-9/7k

8/9k-(-9/7k)=-4-9/5

8/9k+9/7k=-20/5-9/5

56/63k+81/63k=-29/5

137/63k=-29/5

k=(-29/5)/(137/63)

k=(-29/5)(63/137)

k=-1827/685

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Find the surface area of the regular pyramid shown to the nearest whole number. plz help
Sav [38]
The surface area of the regular hexagonal pyramid is
SA = (1/2) pl + B
where p is the perimeter of the base, l is the slant height of the pyramid, and B is the area of the base
The area of a regular hexagon is 3 sh
where s is the length of the side and h is the length of the apothem.
So,
SA = (1/2)(6)(12) (11) + 3(12)(6sqrt3)
SA = 770 square meters
5 0
3 years ago
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The triangle below is isosceles. Find the length of side xx in simplest radical form with a rational denominator.
coldgirl [10]

Answer:

Solution given:

Since the given triangle is isosceles and right angled triangle

perpendicular [p]=base[b]=x

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by using Pythagoras law

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6 0
3 years ago
ITS URGENT
Vinvika [58]

log.8 (.4096) =4

.8 ^4 = .4096



loga b =c

a^c =b

8 0
3 years ago
Another math question :)
Travka [436]

Lets x = Mary's age

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x + 2x + 3 < 30

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x < 9

Mary's age = 9

Inequality represents Mary's possible age:

0 < x < 9

Answer is the second one

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4 0
3 years ago
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If I'm wrong please let me know that means it was (B.) Spending the cash..


7 0
3 years ago
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