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2 years ago

Can somebody check to see if these are right? THANK YOU!!

Mathematics

2 answers:

PIT_PIT [208]2 years ago

8 0

The first one should be x - y <= 25. Since there are 25 OR fewer available, depending on who is out sick or on vacation.

Fed [463]2 years ago

3 0

Those answers are correct cause i did that before.

Hope this Helped!

;D
Brainliest??

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Plsplspls help!!!

RideAnS [48]

Answer:

a) the answer if the substitute is 300

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2 years ago

(Area of Composite Figures)Help me pls.

oksian1 [2.3K]

Answer:

69 centimeters squared

Step-by-step explanation:

First, find the area of the big square = 11cm * 4cm = 44cm

Next, find the area of the leftover square = 5cm * 5cm =25cm

Add them together to get 69 centimeters squared

Hopefully this helps - let me know if you have any questions!

6 0

2 years ago

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I need some help please

Finger [1]

Answer:

a 10000

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this is the correct answer

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2 years ago

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From a group of 3 men and 4 women, a delegation of 2 is selected. What is the expected number of men in the delegation?

Ostrovityanka [42]

Answer:

The expected number of men in the delegation is 0.86.

Step-by-step explanation:

Number of men = 3

Number of women = 4

A delegation of 2 is selected.

Let X be the number of men selected. So, the possible values of X are 0,1,2.

$P(X=0)=\dfrac{^3C_0\times ^4C_2}{^7C_2}=\dfrac{2}{7}$

$P(X=1)=\dfrac{^3C_1\times ^4C_1}{^7C_2}=\dfrac{4}{7}$

$P(X=2)=\dfrac{^3C_2\times ^4C_0}{^7C_2}=\dfrac{1}{7}$

The expected number of men in the delegation is

$E(x)=0\times P(X=0)+1\times P(X=1)+2\times P(X=2)$

$E(x)=0\times \dfrac{2}{7}+1\times \dfrac{4}{7}+2\times \dfrac{1}{7}$

$E(x)=\dfrac{6}{7}$

$E(x)\approx 0.86$

Therefore, the expected number of men in the delegation is 0.86.

4 0

2 years ago

How do I solve for X if I have something like this?<br>(x+2)(1-x)= -4

lakkis [162]

(x+2)(1-x)=-4

subtract 2 from both sides: x(1-x)=2

simplify:x-2x=2

subtract: -x=2

switch the negatives

x=-2

3 0

3 years ago