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3 years ago

3(x + 3) + 10

Mathematics

2 answers:

Makovka662 [10]3 years ago

8 0

3(x+3)+10 = 3x+9+10 = 3x+19
So the answer is B.

Sphinxa [80]3 years ago

7 0

Answer:

b-3x+19

Step-by-step explanation:

you have to open the bracket so 3*x=3x

3*3=9

therefore;3x+9+10=3x+19

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charle [14.2K]

Hello :D

$40.00 x 3 = $120.00

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3 years ago

Exercise 2.4.2: Proving statements about rational numbers with direct proofs. About Prove each of the following statements using

IgorLugansk [536]

Answer:

See Explanation

Step-by-step explanation:

(a) Proof: Product of two rational numbers

Using direct proofs.

Let the two rational numbers be A and B.

Such that:

$A = \frac{1}{2}$

$B = \frac{2}{3}$

The product:

$A * B = \frac{1}{2} * \frac{2}{3}$

$A * B = \frac{1}{1} * \frac{1}{3}$

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$A * B = \frac{1}{3}$

Proved, because 1/3 is rational

(b) Proof: Quotient of a rational number and a non-zero rational number

Using direct proofs.

Let the two rational numbers be A and B.

Such that:

$A = \frac{1}{2}$

$B = \frac{2}{3}$

The quotient:

$A / B = \frac{1}{2} / \frac{2}{3}$

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(c) x + y is rational (missing from the question)

Using direct proofs.

Let x and y be

Such that:

$x = \frac{1}{2}$

$y = \frac{2}{3}$

The sum:

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Take LCM

$x + y = \frac{3+4}{6}$

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<em>The above proof works for all values of A, B, x and y; as long as they are rational values</em>

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3 years ago

(5,-6) after a rotation of 90 digres

vlada-n [284]

Answer:

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Step-by-step explanation:

counterclockwise rotation: (6,5)

clockwise rotation: (-6,-5)

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3 years ago

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IgorLugansk [536]

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