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3 years ago

Which situation can be represented by y = 20x?

Mathematics

1 answer:

NeX [460]3 years ago

4 0

The correct answer is the last one

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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:

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

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

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

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

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:

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

Express as product

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

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

$A / B = \frac{3}{4}$

Proved, because 3/4 is rational

(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:

$x + y = \frac{1}{2} + \frac{2}{3}$

Take LCM

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

$x + y = \frac{7}{6}$

Proved, because 7/6 is rational

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

8 0

3 years ago

Divide fractions 1/2 divided by 1/6

SVEN [57.7K]

1/2 divided by 1/6 is 3

use KCF strategy

1/2 x 6/1=3

1x6=6

2x1=2

6/2=3

4 0

3 years ago

HOW DO I FIND THE SLOPE OF A LINE PERPENDICULAR TO EACH GIVEN LINE???

Paul [167]

Answer:

Slope intercept formula is Y=MX +B

Step-by-step explanation:

so all you need to do is put the equation in that Form

THE SLOPE WOULD BE -8

5 0

2 years ago

I NEED HELP, I'VE BEEN STUCK ON THIS...Find the volume of this triangular prism. Enter only the numerical part of your answer in

deff fn [24]

Answer:

[see below]

Step-by-step explanation:

Volume of a triangular prism is: $V=\frac{1}{2}bhl$

We are given the base of 5, the length of 12, and the height of 8. All measurements are in meters.

$V=\frac{1}{2}(5*12*8)\\\\V=\frac{1}{2}(480)\\\\V=240$

The volume of the prism should be 240 square meters.

4 0

3 years ago

Read 2 more answers

This is the last time its happened twice please i need the answer

slamgirl [31]

Answer:

I think the answer is F hope its right fingers crossed!

Step-by-step explanation:

3 0

3 years ago