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Zigmanuir [339]
2 years ago
9

Multiple answers please help!!

Mathematics
1 answer:
Nikitich [7]2 years ago
3 0

Answer:

The answer is - 12 and - 8

Step-by-step explanation:

2x - 6- 4x > 8

2x - 4x > 8+6

-2x > 24

x< 24÷ - 2....... Whenever you are dividing by a negative number, you switch the equality sign

x < -7

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Find a formula for the sum of the first n even positive integers.
melisa1 [442]
So even postive integers are by defention in form 2k where k is a natural number so
let the sum of even integers to n=S
S=2(1+2+3+4+5+6+7+8+......+k-1+k
divide bith sides of equation 1 by 2
0.5S=1+2+3+4+5+...........+k-1+k
S=2(k+(k-1)+..............................+2+1)
divide both sides of equation 2 by 2
0.5S=k+k-1+..............................+2+1)
by adding both we will get
___________________________
S=(k+1)(k)
so the sum will be equal to
S=
{k}^{2}  + k
so let us test the equation
for the first 3 even number there sums will be
2+4+6=12
by our equation 3^2+3=12
gave us the same answer so our equation is correct
7 0
2 years ago
If edging cost $2.32 per 12-inch stone, and you want a double layer of edging around your flower bed that is 6 yards by 1 yard.
aksik [14]
12 inches = 1foot
1yard = 3feet
6yards = 18feet
Rerange the question:
If edging cost $2.32 per 1foot stone, and you want a double layer of edging around your flower bed that is 18feet by 3feet. How much will edging you flower bed cost?
Perimter:
2(18+3)=42
And since you want to double it; double the perimeter too.
42(2)=84

2.32(84)=194.88
7 0
3 years ago
Read 2 more answers
11) Solve the multiplication equation. Check your answer.<br> 39 = 13y what does y equal?
denis-greek [22]

Answer:

y = 3

Step-by-step explanation:

39 = 13y

y = 3 (explanation: by dividing 13)

Check answer:

39 = 13(3)

39 = 39

5 0
2 years ago
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Answer: 2/3

Step-by-step explanation:

6 0
2 years ago
Solve the Quadratic equation
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Answer:

kindly using which rule?

7 0
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