Ask question

Ask question

All categories

3 years ago

8

How many different ways can a chairperson and an assistant chairperson be selected for a research project if there are 7 scienti

sts available? Which counting method do you use?

1 answer:

alukav5142 [94]3 years ago

3 0

7P2, so 42 ways - permutation method since the order of choosing matters (chair and vice chair)

You might be interested in

The value of n in the inequality 3n + 1 < 7 is

Nana76 [90]

Answer:

n<2

Step-by-step explanation:

3n+1 < 7

3n + 1 + (-1) < 7 +(-1)

3n < 6

(3n)/3< 6/3

n < 2

Hope this helps!!!

7 0

3 years ago

PLEEEEEEEEASE HELP ME ASAP

nadya68 [22]

Think of F(x) is y so the domain would be the opposite side so the answer would be the X side so F -4 -1 0 2 and 7

3 0

3 years ago

Which is an equation of the line passing through (-2, 3) and perpendicular to the line 5x - y = 12?

Bond [772]

Answer:

An equation of the line passing through (-2, 3) and perpendicular to the line 5x - y = 12 will be:

$y=-\frac{1}{5}x+\frac{13}{5}$

Step-by-step explanation:

Given the equation

$5x - y = 12$

converting the line into the slope-intercept form y = mx+b, where m is the slope

$-y = 12-5x$

$y = 5x-12$

The slope of the line = m = 5

We know that a line perpendicular to another line contains a slope that is the negative reciprocal of the slope of the other line, such as:

Therefore, the slope of new line = – 1/m = -1/5 = -1/5

Using the point-slope form of the line equation

$y-y_1=m\left(x-x_1\right)$

where m is the slope of the line and (x₁, y₁) is the point

substituting the slope of new line = -1/5 and (-2, 3)

$y-y_1=m\left(x-x_1\right)$

$y-3=-\frac{1}{5}\left(x-\left(-2\right)\right)$

$y-3=-\frac{1}{5}\left(x+2\right)$

Add 3 to both sides

$y-3+3=-\frac{1}{5}\left(x+2\right)+3$

$y=-\frac{1}{5}x+\frac{13}{5}$

Therefore, an equation of the line passing through (-2, 3) and perpendicular to the line 5x - y = 12 will be:

$y=-\frac{1}{5}x+\frac{13}{5}$

5 0

3 years ago

YOU CAN TAKE A SURVEY TO COLLECT.....................

jolli1 [7]

How do you do it and where ?

5 0

3 years ago

Please help with this its confusing somehow :(

stealth61 [152]

Answer :- D

Refer to the attached image for solution ❤️

8 0

3 years ago