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enyata [817]
3 years ago
8

how to solve quations using subsitution. The equation I need to solve is 2x+y=5 -3x+2y=17 please explain it in detail thank you

Mathematics
1 answer:
faust18 [17]3 years ago
3 0
We have a system of 2 linear equations with 2 unknown, so we can solve it:
<span> 2x + y = 5
-3x + 2y = 17 
We'll use substitution, so lets solve for y in the first equation and substitute that in the second afterwards:
y = 5 - 2x
</span>-3x + 2(5 - 2x) = 17 
-3x + 10 - 4x = 17
-7x = 7
x = -1
then substitute in the original equation to find y:
<span>y = 5 - 2x = 5 - 2(-1)
</span>= 5 + 2
y = 7
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Elanso [62]

Answer:

a) Número siguiente = Número anterior * 2

b) Número siguiente = Número anterior + 2

c) Número siguiente = Número anterior + (n + 1)

Step-by-step explanation:

a) Para la secuencia 2,4,8,16,32,64, ....

El siguiente número es dos veces el número anterior.

Por ejemplo, 4 = 2 * 2, 8 = 4 * 2, 16 = 8 * 2 etc.

b) Para la secuencia 1,3,5,7,9, ....

El siguiente número es igual al número anterior + 2

Por ejemplo, 3 = 1 + 2, 5 = 3 + 2, 7 = 5 + 2 etc.

c) Para la secuencia1,3, 6,10,15,21,28,36,45

La diferencia entre los números aumenta en +1.

3-1 = 2

6-3 = 3

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28-21 = 7

3 0
3 years ago
Can somebody please help me, i really didnt understand my teacher at all
Kamila [148]

Answer:

Step-by-step explanation:

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