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3 years ago

In how many ways can you select five people from a group of nine if the order of selection is important?

1 answer:

4 0

If the order of the selection is important we will apply the Arrangements formula $A_{n} ^{k}= \frac{n!}{(n-k)!}$ .
In our case we will have $A_{9}^{5}= \frac{9!}{4!} =5*6*7*8*9=15120.$

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Using polynomial regression fit a cubic equation to the following data: x 3 4 5 7 8 9 11 12 y 1.6 3.6 4.4 3.4 2.2 2.8 3.8 4.6 Pl

luda_lava [24]

Answer:

As problem is of regression analysis,thus r^2 will be 24 and sy/x is 4.

3 0

3 years ago

3 connecting lines are shown. Line D F is horizontal. Line D E is about half the length of line D F. Line F E is about one-third

mars1129 [50]

The inequality that explains why the three segments cannot be used to construct a triangle is ED + EF < DF

<h3>Inequalities </h3>

From the question, we are to determine which of the given inequalities explains why the three segments cannot be used to construct a triangle

From the given information,

Line DE is about half the length of line DF

That is,

ED = 1/2 DF

Also,

Line FE is about one-third of the length of line DF

That is,

EF = 1/3 DF

Then, we can write that

ED + EF = 1/2DF + 1/3DF

ED + EF = 5/6 DF

Since,

5/6 DF < DF

Then,

ED + EF < DF

Hence, the inequality that explains why the three segments cannot be used to construct a triangle is ED + EF < DF

Learn more on Inequalities here: brainly.com/question/1447311

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5 0

2 years ago

Do you agree with the equation? Explain why or why not.

marin [14]

We have that

[√(2x+1)]+3=0
for x=4
[√(2*4+1)]+3=0
[√(9)]+3=0
3+3=0----------6 is not zero
therefore
the solution is not correct for x=4

[√(2x+1)]+3=0--------> [√(2x+1)]=-3---------> <span>There is no real solution for that equation
</span>Because (2x+1) >= 0
the solution is with complex numbers

8 0

3 years ago

Slope is 8: y-intercept is -7

erma4kov [3.2K]

Answer:

If you are looking for the coordinates they land on it would be (1,1).

Step-by-step explanation:

If the slope is 8 that would be 8/1. So first you start of at -7 on the y-axis then you move upwards 8 spaces so that your new y-axis is 1, then you move right 1 so that your new x-axis is 1.

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3 years ago

Heidi grew her hair out for many years. Her hair was 1\dfrac{1}{3}1 3 1 1, start fraction, 1, divided by, 3, end fraction of a

RSB [31]

Answer:

Heidi hass really kong hair and should cut it

7 0

3 years ago