What is the result when the number 86 is decreased by 9%?

Determine whether the points lie on straight line.

wel

Answer:

A) Non-collinear- does not lies on straight line

B) Collinear- lie on straight line

Step-by-step explanation:

We have to check collinearity of three points.

The points $(x_1, y_1, z_1),(x_2, y_2, z_2),(x_3, y_3, z_3)$ are said to be collinear if,

$\left[\begin{array}{ccc}x_1&y_1&z_1\\x_2&y_2&z_2\\x_3&y_3&z_3\end{array}\right] = 0$

A) A(2, 5, 3), B(3, 7, 1), C(1, 4, 4)

$\left[\begin{array}{ccc}2&5&3\\3&7&1\\1&4&4\end{array}\right] \\\\=2(28-4)-5(12-1)+3(12-7)\\= 8 \neq 0$

Thus, the given points are not collinear.

B) D(0,-5,5), E(1,-2,4), F(3,4,2)

$\left[\begin{array}{ccc}0&-5&5\\1&-2&4\\3&4&2\end{array}\right] \\\\=0(-4-16)+5(2-12)+5(4+6)\\=0$

Thus, the given points are collinear.

6 0

3 years ago

2 ^ 3 * 3 ^ 6 / 3 ^ 4 pls

lesya [120]

Answer:

72

Step-by-step explanation:

2^3x3^6= 5832

5832/3^4=72

(You could very well solve this on a T84 calculator, there are apps that simulate it on the phone I believe, but if you do not have a phone I am sure you could find a website that could do the job just as well! Good luck with the work! ^-^)

4 0

3 years ago

The temperature at 8:00am is 5 degrees Celsius and increases 2 degrees per hour. Does this equal y=2x+5

Ierofanga [76]

Yes.

y represents the temperature.

x represents the number of hours past 8:00am.

Please consider marking this answer as Brainliest to help me advance.

5 0

3 years ago

CAN SOMEONE PLEASE HELP WITH THIS QUESTION ILL GIVE 20 FREE POINTS PLUS BRAINLIEST FOR CORRECT ANSWER !!!

galben [10]

Answer:

6

Step-by-step explanation:

The overbar means the digit repeats indefinitely. The repeating decimal 0.333... is equivalent to 1/3, so this is the simple addition ...

3 2/3 + 2 1/3 = 5 3/3 = 6

_____

<em>Comment on the repeating decimal</em>

1/3 = 0.3333... repeating is one of the first decimal equivalents you learn.

__

If you're into repeating decimals. you may have learned how to convert them to fractions:

x = 0.3333... repeating . . . . . . . give a name to the value

10x = 3.3333... repeating . . . . . multiply by 10^p where p is the number of digits in the repeating pattern

10x - x = 3.3333... - 0.3333... = 3 . . . . . subtract: the repeating portions cancel

9x = 3 . . . . . . . . . .simplify

x = 3/9 = 1/3 . . . . .divide by the x-coefficient; simplify

4 0

3 years ago

Read 2 more answers

Can you please show yiur work with questions 5-8

alexgriva [62]

I hope this helps :) I didn't show my work on one I want you to learn how to do this. On a test I won't be there. :) Here you go.

6 0

3 years ago