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3 years ago

-6x + 5xy - 9y - 3x + 7 =....need help again!!sorry

Mathematics

1 answer:

melomori [17]3 years ago

4 0

Answer:

=5xy−9x−9y+7

Step-by-step explanation:

Let's simplify step-by-step.

−6x+5xy−9y−3x+7

=−6x+5xy+−9y+−3x+7

Combine Like Terms:

=−6x+5xy+−9y+−3x+7

=(5xy)+(−6x+−3x)+(−9y)+(7)

=5xy+−9x+−9y+7

Answer:

=5xy−9x−9y+7

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The cone had a radius of 4.5 inches and a height of 6 inches. What is the volume of this cone?

pochemuha

Answer:

125.8983

Step-by-step explanation:

Use the formula for volume of a cone: v= (1/3)(3.14)(radius squared)(height) so v = (1/3)(3.14)(20.25)(6) = 125.8983

4 0

3 years ago

I NEED HELP PLEASE, THANKS! :)

Mars2501 [29]

Answer:

-0.4

Step-by-step explanation:

Since x=4 is not a critical point, you can simply evaluate the function. You can do this in your head.

(2√4 -6)/(9 -4) = (2·2 -6)/5 = -2/5 = -0.4

7 0

3 years ago

PLZ HELP !!!!!! IT’S DUE TODAY

Kay [80]

Answer:

jvhhhhchgcgvvv

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

If 2/x+ 3/y =13 and 5/x- 4/y = -2, then x+y equals

creativ13 [48]

Answer:

$x + y = \frac{5}{6}$

Step-by-step explanation:

Let:

$u = \frac{1}{x} \\ v = \frac{1}{y}$

This allows us to manipulate the equations like we normally would.

$2u + 3v = 13 \\ 5u - 4v = - 2 \\ \\ + 8u + 12v = 52 \\ + 15u - 12v = - 6 \\ 23u = 46 \\ u = 2 \\ \\ 2(2) + 3v = 13 \\ 4 + 3v = 13 \\ 3v = 9 \\ v = 3$

Then, we return the values where they belong.

$u = \frac{1}{x} \\ 2 = \frac{1}{x} \\ x = \frac{1}{2} \\ \\ v = \frac{1}{y} \\ 3 = \frac{1}{y} \\ y = \frac{1}{3}$

Finally, we add:

$\frac{1}{2} + \frac{1}{3} = \frac{3}{6} + \frac{2}{6} = \frac{5}{6}$

7 0

3 years ago

HELP PLEASE! I REALLY NEED THE ANSWER!

ira [324]

Answer: 3/4

Step-by-step explanation:

4 0

3 years ago

-6x + 5xy - 9y - 3x + 7 =....need help again!!sorry​

-6x + 5xy - 9y - 3x + 7 =....need help again!!sorry