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3 years ago

HELP I AM CONFUSION CAUSE IM DUMB AND MISSED SCHOOL

Mathematics

2 answers:

lana [24]3 years ago

6 0

Answer: The answers are...

Step-by-step explanation:

2 = 14

-6 = -42

4 = 28

-9 = -63

-3 = -21

Hope this helped! If you need an explanation of how those are the answers, I'm more than happy to explain! :)

mash [69]3 years ago

4 0

Answer:

14,-42,28,-63,-21

Step-by-step explanation:

Plug the x value into y=7x.

example:

y=7(2), this equals 14.

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If 3x - 2y = 9 , 27x³- 8y³= 1377 , prove that xy = 4 <br><br><br><br>plzz answer this question...

solniwko [45]

Step-by-step explanation:

Here we are given that , the Value of

$3x - 2y = 9$
$27x^3 - 8y^3 = 1377$

And we need to find the prove that ,

$xy = 4$

We know a identity as ,

$(a-b)^3 = a^3-b^3-3ab(a-b)$

On cubing both sides of the given equation,

$(3x-2y)^3 = 9^3$

Simplify and then substitute ,

$27x^3-8y^3 -3(3x)(2y)(3x-2y ) = 729$

$1377 - 18xy (9) = 729$

$162xy = 1377-729$

$xy =\dfrac{648}{162}$

$xy = 4$

Hence Proved !

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2 years ago

The triangles below are similar. Triangle Y X Z. Side Y X is 6 centimeters, X Z is 7 centimeters, and Z Y is 3 centimeters. Tria

kotykmax [81]

Answer:

I would go with c.

Step-by-step explanation:

Hope this helped!

7 0

2 years ago

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Can someone please answer this and explain it?

professor190 [17]

Answer:

Velocity = displacement / time

Distance = 3t^2 +2t +6 to find distance you need to plug in time = 2 sec

Distance = 3(2)^2 +2(2) +6

Distance = 3(4) +4 + 6

Distance = 12 + 4 +6

Distance = 22 meters

In this problem the displacement is the distance.

Velocity = 22 meters / 2 second

Velocity = 11 meters/second

Does this help?

Step-by-step explanation:

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2 years ago

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vovikov84 [41]

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3 years ago

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zloy xaker [14]

The answer is C because if you put
$x = - 2 \\ y = 1 \\$
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They're just flipped equations

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2 years ago

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