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frozen [14]
2 years ago
10

Please help I’m vvv confused

Mathematics
2 answers:
Triss [41]2 years ago
7 0

Equation is y=kx.  We have four chance to figure out k; hopefully they all give the same result

x=9, y=63,  y=kx becomes 63=k(9) so k=63/9=7

x=4, y=28, 28=k(4), k=7

The constant of proportionality is 7; we check  2×7=14, 11×7=77

Answer: k=7,   y=7x

andriy [413]2 years ago
7 0

Answer:

y=kx

y=k(7)x

y=7x(11)

y=7*11

y=77

Step-by-step explanation:

So with useing the equation that I used the porportional relationship is 7 so just fill 7 in for k. Then take the x number and fill it in for x. you will then multiply and get the y value.

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A geometric sequence has a first term of 3 and a fourth term of 81÷8.<br><br> Find the eighth term
tatuchka [14]

Answer:

6561 / 128

Step-by-step explanation:

The nth term of a geometric sequence is:

a = a₁ (r)ⁿ⁻¹

The first term is 3, and the fourth term is 81/8.

81/8 = 3 (r)⁴⁻¹

27/8 = r³

r = 3/2

The eighth term is therefore:

a = 3 (3/2)⁸⁻¹

a = 6561 / 128

5 0
2 years ago
Is .444 rational or irrational???
Murljashka [212]
Any terminating decimal number is rational.
A rational number is a number that can be written as a fraction of integers.

0.444 = 444/1000 = 222/500 = 111/250

0.444 is the same as 111/250, a fraction of integers, so 0.444 is rational.
6 0
3 years ago
Help!!!
pogonyaev

Answer:

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3 0
2 years ago
Charles has 24 marbles. He has 6 more yellow marbles than blue marbles. Which expression represents this equation?
vekshin1

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Step-by-step explanation:3

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3 0
2 years ago
5. A rectangle ABCD has vertices A(-2, 3), B(3, 3), C(3, -5). Find the coordinates of D.
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