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3 years ago

The following system has no solution. x+y+z= 15 2x+z = 1 27-z=7 true or false

Mathematics

1 answer:

Luba_88 [7]3 years ago

8 0

Answer:

False

Step-by-step explanation:

Let us start with the most obvious one:

27 - z = 7

-27 - 27

_________

-z = -20

z = 20 [Plug this back into the other two equations to get the y-coordinate and x-coordinate of 4½ and -9½]; 4½ = y; -9½ = x

So, the solution is [-9½, 4½, 20].

I am joyous to assist you anytime.

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JulsSmile [24]

Answer:

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Step-by-step explanation:

We need to write sin (70) + sin(30) as a product. The formula used here is :

$\sin A+\sin B=2\sin (\dfrac{A+B}{2})\cos(\dfrac{a-b}{2})$

Here, A = 70 and B = 30

So,

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Answer:

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Step-by-step explanation:

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Anastaziya [24]

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