3 years ago

HELP ME PLEASE!!!!

1 answer:

8 0

$\dfrac{3}{\sqrt7}=\dfrac{3\cdot\sqrt7}{\sqrt7\cdot\sqrt7}=\boxed{\dfrac{3\sqrt7}{7}}\\\\\\\text{Used:}\ \sqrt{a}\cdot\sqrt{a}=a$

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The answer is -6x - 42

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3 years ago

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What is the solution to the following system of equations? 4x + 2y = 18 x − y = 3

Ber [7]

For this case we have the following system of equations:

$4x + 2y = 18\\x-y = 3$

To solve, we clear "x" from the second equation:

$x = 3 + y$

We substitute "x" in the first equation:

$4 (3 + y) + 2y = 18\\12 + 4y + 2y = 18\\12 + 6y = 18$

We clear the value of the variable "y":

$6y = 18-12\\6y = 6\\y = \frac {6} {6}\\y = 1$

We look for the value of the variable "x":

$x = 3 + y\\x = 3 + 1\\x = 4$

Thus, the solution of the system is given by:

$(x, y) :( 4,1)$

Answer:

$(x, y) :( 4,1)$

Option D

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3 years ago

On Monday Ravi drives for 4 hours.

tensa zangetsu [6.8K]

Answer:

Step-by-step explanation:

On Monday Ravi drives for 4 hours.

His average speed is 30 mph.

How far does Ravi drive on Monday?

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Can anyone help me on this? Vocabulary for segment of a tangent that has an endpoint that has an point of u tangency

Alik [6]

Answer:

Tangent segment ? I think. I don't know for sure because of the way you wrote the question- I got a bit confused.

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3 years ago

If one liter of paint covers 100 square feet, how many gallons of paint will cover 800 square meters?

mr_godi [17]

It takes 8 liters to cover 800 sqft of floor

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