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vazorg [7]
3 years ago
14

Help me pleasseeee :)

Mathematics
1 answer:
iVinArrow [24]3 years ago
4 0
 3x+7 = 51-x
4x = 44
x = 11

answer
x = 11
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A sequence of 7 numbers starts with 8. The second number in the sequence is unknown and may be positive or negative. The third t
scoray [572]

Answer:

4

Explanation:

a_1=8,a_7=0

Since the third term is the sum of the two previous terms

a_3=a_2+a_1

a_7=a_6+a_5

a_7=a_5+a_4+a_4+a_3

Continuing in like manner

a_7=5a_3+3a_2

Since a_3=a_2+a_1

a_7=5(a_2+a_1+3a_2

a_7=5a_2+5a_1+3a_2

a_7=8a_2+5a_1

Recall: a_1=8,a_7=0

0=8a_2+5*8

8a_2=-40

a_2=-5

The sequence is therefore:

8,-5,3,-2,1,-1,0

The sum of the seven numbers is 4.

8 0
3 years ago
Someone can you please help me on number 74
lisabon 2012 [21]

Answer:

  9t^3 +t^2

Step-by-step explanation:

The perimeter of the figure is the sum of the lengths of the sides. The side lengths are represented by the polynomials shown, so the perimeter (P) is their sum:

  P = (4t^3 -5) + (4t^3 -5) + (t^2 +9) + (t^3 -t^2 -11) + (t^2 +12)

Rearranging to group like terms:

  P = (4t^3 +4t^3 +t^3) + (t^2 -t^2 +t^2) + (-5 -5 +9 -11 +12)

  P = 9t^3 +t^2

The perimeter of the figure is represented by the polynomial 9t^3 +t^2.

5 0
3 years ago
Read 2 more answers
:D please help mee☺️
Pachacha [2.7K]

Answer:

115

Step-by-step explanation:

The angle of a straight line is 180°. so all you have to do is subtract 65 from 180 and get 115.

5 0
3 years ago
Read 2 more answers
a line has the equation 4y=3x-8 which is the equation of a line parallel to this line that has a y intercpt of 4?
Nikolay [14]

Answer:

y=34x+2.625

y=34x+2.75

y=−34x+1.25

y=34x+1.25

y=−34x+2.75

Correct answer:

y=−34x+2.75

Step-by-step explanation:

5 0
3 years ago
Which statement explains Joni’s error?
USPshnik [31]

Answer:

um can i see the statements?

Step-by-step explanation:


8 0
3 years ago
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