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3 years ago

now i know you multiply the variables with the equation but i dont exactly know if im doing this right.

Mathematics

1 answer:

inn [45]3 years ago

6 0

Answer:

= -48

Step-by-step explanation:

3x^3 - 8y^2

3 ( 2 )^3 - 8 ( -3 )^2

first you solve the exponents

3 ( 8 ) - 8 ( 9 )

multiply

24 - 72

subtract

= - 48

hope this helps

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agasfer [191]

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π=3.14
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3.14 * 6 = 18.84.
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3 years ago

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Write an algebraic expression that represents each purchase.

Svetradugi [14.3K]

Answer: Both answers will be

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Step-by-step explanation:

Since we have given that

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3 years ago

Solve the system of linear equations Y+2.3=0.45x -2y=4.2-7.8

Zina [86]

Solve the following system using substitution:
{y + 2.3 = 0.45 x
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{y + 2.3 = 0.45 x
{-2 y = -3.6

-3.6 = -18/5:
-2 y = -18/5

Divide both sides by -2:
{y + 2.3 = 0.45 x
{y = 9/5

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{4.1 = 0.45 x
{y = 9/5

In the first equation, look to solve for x:
{4.1 = 0.45 x
{y = 9/5

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41/10 = (9 x)/20

41/10 = (9 x)/20 is equivalent to (9 x)/20 = 41/10:
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3 years ago

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now i know you multiply the variables with the equation but i dont exactly know if im doing this right.​

now i know you multiply the variables with the equation but i dont exactly know if im doing this right.