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denis23 [38]
3 years ago
7

A set of bed prices are normally distributed with a mean of 1300 dollars and a standard deviation of 300 dollars. A wooden bed h

as a price of 1399 dollars. What proportion of bed prices are higher than the price of the wooden bed?
Mathematics
1 answer:
koban [17]3 years ago
5 0

Answer:

0.3707

Step-by-step explanation:

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12 chocolate bars for $22 or 20 chocolate bars for $33 use unit rate to determine the better buy.
jekas [21]
12c=22
6c=11
c=1 5/6
20c=33
c= 1 13/20
5/6 is about .83
13/20 is .65
12 chocolate bars for $22 is about $1.83 each
20 chocolate bars for $33 is $1.65 each

The 20 chocolate bars for $33 dollars has a better unit rate and is a better buy.
6 0
2 years ago
Find the value of x (multiple choice)
nekit [7.7K]

Answer:

<em>D.) 6 </em>

Step-by-step explanation:

<em>-3+2*6=9</em>

6 0
2 years ago
Kinda confused on what the sum would be?!? HELP NOWW PLEASE
valentinak56 [21]
That is b. aka 2
thanks
4 0
3 years ago
Identify the property used in the first five steps to solve the equation 2(x-5)-6x=-22
Alona [7]
To answer this question, you need to multiply the number inside the bracket first. Then you can move the number to the right side of the equal sign and keep the x on the left side of the equal sign. The step would be like this
2(x – 5) - 6x= -22(2x - 10) - 6x = -222x - 6x  = -22 +10-4x= -12x= -12/-4x=3
Hope this helps!!!
8 0
3 years ago
Read 2 more answers
Two numbers whose sum is 44 and whose product is a maximum
Mashcka [7]

Answer:

x = y = 22

Step-by-step explanation:

It would help to know your math course. Do you know any calculus? I'll assume not.

Equations

x + y = 44

Max = xy

Solution

y = 44 - x

Max = x (44 - x)                    Remove the brackets

Max = 44x - x^2                   Use the distributive property to take out - 1 on the right.

Max = - (x^2 - 44x )               Complete the square inside the brackets.

Max = - (x^2 - 44x + (44/2)^2 ) + (44 / 2)^2 . You have to understand this step. What you have done  is taken 1/2 the x term and squared it. You are trying to complete the square. You must compensate by adding that amount on the end of the equation. You add because of that minus sign outside the brackets. The number inside will be minus when the brackets are removed.

Max = -(x - 22)^2 + 484

The maximum occurs when x = 22. That's because - (x - 22) becomes 0.

If it is not zero it will be minus and that will subtract from 484

x + y = 44

xy = 484

When you solve this, you find that x = y = 22 If you need more detail, let me know.


4 0
2 years ago
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