3 years ago

How can 9+3 =12 help you solve 12-9?

Mathematics

2 answers:

Dovator [93]3 years ago

7 0

9+3=12, 12-9=3, since those three numbers are in the first equation.

d1i1m1o1n [39]3 years ago

3 0

Well you know that 9+3=12 so you can reverse it and do 12-9=3 .Because 3 is the only one left in the equation of 9+3=12.

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Help me with 12, 13, and 14 please ! thanks

melamori03 [73]

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Anna11 [10]

Answer:

The final velocity v is 21.74 m/s.

Step-by-step explanation:

Given:

$\textrm{initial velocity} = u = 9\ m/s\\\textrm{acceleration} = a = 7\ m/s^{2}\\\textrm{distance} = s = 28\ m$

To find:

$\textrm{final velocity} = v = ?$

Solution:

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Substituting the values u, a and s in the above equation we get

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7 0

3 years ago

What is the solution to the system of equations?

o-na [289]

Answer:

x = -5

y = 4

Step-by-step explanation:

3x + 4y = 1 /*(-4)

4x + 5y = 0 /*3

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-12x - 16y = -4

12x + 15y = 0 +

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-y = -4

y = 4

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12x = -15y

12x = -60

x = -5

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