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2 years ago

Could some one help me with this problem? 13 - 8.1 =

Mathematics

2 answers:

sveta [45]2 years ago

5 0

Yeah so just do 130-81 and stick the decimal point between the tens and ones place.
Thus, 130 - 81 = 49. It is 4.9

torisob [31]2 years ago

4 0

13 - 8.1 = 4.9, because 13 minus 8.1 if you do the math is 4.9

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A sales analyst listed the probabilities of profits and losses in dollars for a certain company. Find the mean for the probabili

kakasveta [241]

Answer: The mean for the probability distribution will be 69.25.

Explanation:

Since we given that

$At\ x_1= -500 ,P(x) = 0.076\\$

$At\ x_2= -250,P(x)= 0.191\\$

$At\ x_3=0, P(x)= 0.265\\$

$At\ x_4=250 , P(x)= 0.316\\$

$At\ x_5=500 , P(x)= 0.152\\$

As we know the formula for expectation of x i.e. known as mean for the probability distribution,

$E(x)=x\sum_{1}^{5} P(x)$

So, we apply this formula in our case,

$-500\times 0.076+(-250)\times 0.191+0\times 0.265+250\times 0.316+500\times 0.512=69.25$

$\mu = 69.25$

Hence, the mean for the probability distribution will be 69.25.

4 0

2 years ago

Read 2 more answers

1. Jin fills up a 510-gallon pool in the backyard for her children. She fills it with the garden hose at a rate of 17 gallons pe

marta [7]

Sorry couldn’t answer

5 0

2 years ago

Help me fast I have 30 min to finish the testtt!!!!!!!!!

CaHeK987 [17]

B and D
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6 0

2 years ago

Andrew has already played 32 minutes on his video game today and wants to play an additional 15 minutes each of x games after sc

artcher [175]

Answer:

y = 15x+32

Step-by-step explanation:

Given

y to be the total minutes Andrew will play video games today

x is the total number of games played after school

If he wants to play an additional 15 minutes each of x games after school today, the total minutes he will use for the x games will be 15* x = (15x)minutes

We are told that he has initially spent 32minutes on video games. hence;

Total minutes Andrew used on games y = (15*x)+32

The required equation will be y = 15x+32

7 0

2 years ago

1) h(x)=3x3<br>g(x)= - 4x+1<br>Find (h+g)(10)

Aleksandr-060686 [28]

Answer:

$(h+g)(10) = 2691$

Step-by-step explanation:

$h(x) = 3x^3\\g(x) = -4x+1$

Adding both equations will make it:

$(h+g)(x) = 3x^3-4x+1$

Putting x = 10 will make it:

$(h+g)(10) = 3(10)^3-4(10)+1$

= 3(1000)-40+1

= 3000-39

= 2961

3 0

3 years ago