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3 years ago

Is it a rational number?Why or why not?

Mathematics

1 answer:

zzz [600]3 years ago

4 0

It is rational, because it can be written as a fraction.

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Given the system of equations: 7X, + 3X2 = 12 -6x - 3x2 = 4 a. Set up the coefficient matrix for the system and find its inverse

xz_007 [3.2K]

Answer:

Step-by-step explanation:

Given is the system of equations:

$7X_1 + 3X_2 = 12\\ -6x_1 - 3x_2 = 4$

a) Coefficient matrix is

7 3

-6 -3

b) |A|= -21+18=-3

c) Inverse =

1 --1

2 -7/3

c) Solution = product of inverse matrix * (12 4) Transpose

X1 = 16 and X2 =-100/3

4 0

4 years ago

Can someone help ???

meriva

Answer: 450

Step-by-step explanation:

971 = B + (T+71)

971-71 = 2 B

450 = B

6 0

4 years ago

Solve -3x-6>4x+8 please

WARRIOR [948]

Hi student, let me help you out!

.......................................................................................................

Let's solve this inequality by following these steps:

Add 6 to both sides.
Subtract 4x from both sides.
Solve for x.

Step 1: Add 6 to both sides: $\pmb{-3x-6+6 > 4x+8+6}$ .

Upon simplifying this, we obtain $\pmb{-3x > 4x+14}$ .

Step 2. Subtract 4x from both sides: $\pmb{-3x-4x > 4x-4x+14}$ .

Upon simplifying, we obtain $\pmb{-7x > 14}$ .

Step 3. Divide both sides by -7.

Upon carrying this out, we obtain $\pmb{x < -2}$ .

$\ddot\bigstar$ Remember this...

$\fbox{\sf{The\:sign\:of\:the\:inequality\:changes\:if\:both\:sides\:are\:divided/multiplied\:by\:a\:negative\:number}}$

Hope this helped you out, ask in comments if any queries arise.

Best Regards!

$\star\bigstar\overline{\overline{\underline{\underline{\bold{Reach\:far.\:Aim\:high.\:Dream\:big.}}}}}\bigstar\star$

$\underline{\rule{300}{5}}$

3 0

2 years ago

Read 2 more answers

An object traveling with an initial constant speed along the y-axis begins to decelerate 4 kilometers before reaching a referenc

balandron [24]

The value that is equal to the average rate of change of the function over the interval is equal is 1 m/s

<h3>The average rate of change</h3>

Given the position of the object expressed as:

y = -t^2 + 3t - 4

In order to calculate the value that is equal to the average rate of change of the function over the interval (0, -4) and (2, -2), we will determine the slope of these two coordinates as shown;

Rate of change = -2-(-4)/2-0
Rate of change = -2+4/2
Rate of change = 2/2

Rate of change = 1 m/s

Hence the value that is equal to the average rate of change of the function over the interval is equal is 1 m/s

Learn more on rate of change here; brainly.com/question/8728504

5 0

2 years ago

Can someone help me out with this?

Anton [14]

Answer:

.5? or 1/2

Step-by-step explanation:

i think its half, because the Y factors are going down by half.

i hope that kinda made sense.

5 0

3 years ago