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Cerrena [4.2K]
3 years ago
14

12 9 6 3 60 45 30 15 what is the constant of proportionality

Mathematics
1 answer:
Mice21 [21]3 years ago
6 0

Answer:

5

Step-by-step explanation:

A constant of proportionality is the ratio that forms between each x y pair as the fraction y/x. In a proportional relationship it is constant or the same every time.

60/12 = 5

45/9 = 5

30/6 = 5

15/3 = 5

The constant of proportionality is 5.

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4 students each write an equation which student's equation is true
Setler79 [48]

Answer:

A

Step-by-step explanation:

5 0
2 years ago
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write a system of linear equations that has only one solution. solve the system of equations in two ways.
Iteru [2.4K]
X + 5y = 1 . . . . (1)
8x - 2y = 3 . . . .(2)
Solution 1.
From (1), x = 1 - 5y
substituting for x in (2), we have:
8(1 - 5y) - 2y = 3
8 - 40y - 2y = 3
8 - 42y = 3
42y = 5
y = 5/42
x = 1 - 5(5/42) = 1 - 25/42 = 17/42.

Solution 2.
Multiply (1) by 8, to get:
8x + 40y = 8 . . . . . (3)
(3) - (2) = 40y - (-2y) = 8 - 3
42y = 5
y = 5/42
substitute for y into (3), to get:
8x + 40(5/42) = 8
8x + 100/21 = 8
8x = 8 - 100/21 = 68/21
x = (68/21)/8 = 17/42
7 0
2 years ago
How to solve for x in the equation a 3x=x/2?
aalyn [17]
3x = x / 2

Mmc (2,1) = 2

6x = x
6x- x = 0
5x= 0
x = 0/5
x = 0


8 0
3 years ago
Z² + 2z+1-w²<br><br> Please factor.
Rus_ich [418]
Your answer is (z+1+w) (z+1-w)
3 0
3 years ago
What is the value of the expression below when x=5?
snow_lady [41]

Answer:

790

Step-by-step explanation:

You put 5 instead of x and you calculat

6*5^3 +8*5= 750+40=790

6 0
3 years ago
Read 2 more answers
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