Answer:
- 836
Step-by-step explanation:
Check out the attachment below:
I’m sorry running a little bit late but I’m just
Answer:
x=5, y=8. (5, 8).
Step-by-step explanation:
3x+5y=55
5x+4y=57
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5(3x+5y)=5(55)
-3(5x+4y)=-3(57)
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15x+25y=275
-15x-12y=-171
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13y=104
y=104/13
y=8
3x+5(8)=55
3x+40=55
3x=55-40
3x=15
x=15/3
x=5
Answer:
aₙ = 4(-1)ⁿ⁻¹(3)ⁿ⁻¹
Step-by-step explanation:
The formula for the nth term of a geometric sequence is
aₙ = a₁rⁿ⁻¹
We can get the value for r by dividing aₙ by aₙ₋₁.
a₄/a₃ = -108/36
a₄/a₃ = -3
r = -3
aₙ = 4(-3)ⁿ⁻¹
aₙ = 4(-1)ⁿ⁻¹(3)ⁿ⁻¹
The (-1)ⁿ⁻¹ term makes even-numbered terms negative.
Answer:
Step-by-step explanation:
x+4y=6
x+4y=15
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x+4y=6
-(x+4y)=-15
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x+4y=6
-x-4y=-15
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0=-9
no solution
Answer: No Solution
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x+4y=7
3x+12y=21
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simplify 3x+12y=21 into x+4y=7
Answer: Infinitely many solutions
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x-y=1
2x+y=4
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x=y+1
2(y+1)+y=4
2y+2+y=4
3y=4-2
3y=2
y=2/3
x-2/3=1
x=1+2/3
x=3/3+2/3=5/3
Answer: x=5/3, y=2/3. (5/3, 2/3).
