3 years ago

What is 3/10 x 3 =? Please help!

Mathematics

1 answer:

MA_775_DIABLO [31]3 years ago

4 0

Here is a quick and easy way:

3
-- x 3
10

3 3 9
-- x -- = ---
10 1 10

Answer is 9/10.

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3/4 x = 2/5 please answer this

Vlada [557]

Answer:

= 8 /1 5

Step-by-step explanation:

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3 years ago

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Expand the following. (3x + 2)2 A.9x2+6x+4 B.9x2+4 C.3x2+4 E.9x2+12x+4

PolarNik [594]

Step-by-step explanation:

working ;

(3x+2)^2

*Apply Perfect Square Formula : (a+b) =a^2+2ab+b^2

a = 3x,b = 2

(3x)^2 + 3x.2+2^2

finally Answer is:

= 9x^2 + 12x +4

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2 years ago

Are each of the following roots of this

Vladimir79 [104]

Answer:

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2 years ago

Simplify 7x + 7 + 6x - 9. 13x - 2 13x + 2 11x

nikklg [1K]

To do this you must combine like terms as follows.

7x + 6x = 13x
7 - 9 = -2

Combine these together and you will get the following.

13 - 2 or -2 +13

7 0

3 years ago

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What number must be added to the expression below to complete the square? x² - 18x

kiruha [24]

Answer:

$\boxed {\boxed {\sf 81}}$

Step-by-step explanation:

The standard form of a quadratic is:

$ax^2+bx+c$

To complete the square, the a (leading coefficient) must be 1 and there can only be terms with variables on one side.

The expression given:

$x^2-18x$

follows these rules. Next, we divide the b (linear coefficient) by 2, then square it. Basically:

$(\frac{b}{2})^2$

The b in the expression is -18.

$(\frac{-18}{2})^2$

$(-9)^2= -9*-9= 81$

This is the number that is added.

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3 years ago