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liubo4ka [24]
3 years ago
9

Is (1, -4) a solution to the equation y=-2x ? a. yes b. no

Mathematics
1 answer:
Nuetrik [128]3 years ago
7 0
(B)No!!! It's solution would be (2, -4)
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dmitriy555 [2]
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4 years ago
Could you help me with this problem
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Answer:

For x

We use cosine

cos 45° = 2/x

After solving

x = 2√2

Since we have the value of x we use it to get the value of y

we use cosine

cos 60° = 2√2/y

y =2√2/cos 60

y = 4√2

We use Pythagoras theorem to find z

(4√2)² = (2√2)² + z²

z² = 32 - 8

z² = 24

z = √24

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Hope this helps.

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3 years ago
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1) D

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Step-by-step explanation:

4 0
3 years ago
Combining like terms: -7x+x HELP ASAP​
Svetllana [295]

Answer:

Hello!!! Princess Sakura here ^^

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When you combine like terms you see the ones that are similar then you add or subtract, depends on what the signs are. For this one -7x is similar to x so in this case you would add x to the -7x which will give you -6x.

5 0
4 years ago
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antiseptic1488 [7]

Answer:

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