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juin [17]
3 years ago
8

I need help please ?!!!

Mathematics
1 answer:
victus00 [196]3 years ago
5 0
If it goes only up to 13 you can’t get a 15 making it impossible
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The length of the edge of a cube is ³√7 cm. Find the volume of a cube​
slava [35]

Answer:

7 cm^{3}

Step-by-step explanation:

volume is length X width X height

since a cube has the same measurement for length, width, and height, the volume is found by multiplying \sqrt[3]{7} X \sqrt[3]{7} X \sqrt[3]{7}

the answer is 7

8 0
3 years ago
In a doctor's waiting room, there are 14 seats in a row. Eight people are waiting to be seated. Three of the 8 are in one family
lianna [129]
There are 14 chairs and  8 people to be seated. But among the 8. three will be seated together:

So 5 people and (3) could be considered as 6 entities:

Since the order matters, we have to use permutation:

¹⁴P₆ = (14!)/(14-6)! = 2,162,160, But the family composed of 3 people can permute among them in 3! ways or 6 ways. So the total number of permutation will be ¹⁴P₆  x 3! 

2,162,160 x 6 = 12,972,960 ways.

Another way to solve this problem is as follow:

5 + (3) people are considered (for the time being) as 6 entities:

The 1st has a choice among 14 ways
The 2nd has a choice among 13 ways
The 3rd has a choice among 12 ways
The 4th has a choice among 11 ways
The 5th has a choice among 10 ways
The 6th has a choice among 9ways

So far there are 14x13x12x11x10x9 = 2,162,160 ways
But the 3 (that formed one group) could seat among themselves in 3!
or 6 ways:

Total number of permutation = 2,162,160 x 6 = 12,972,960

4 0
3 years ago
What is thd solution for the equation 14.8=n-0.3
Nina [5.8K]
The given equation is:

14.8 = n - 0.3

Adding 0.3 to both sides, we get:

14.8 + 0.3 = n - 0.3 + 0.3
15.1 = n - 0
15.1 = n

Thus, the value of n for which the given equation is true is 15.1
4 0
3 years ago
Sandra is making a sign for her chess club. Two possible designs for the base of the
klasskru [66]
I was only able to come up with the answer of 1. Here is my work (don’t mind the messy handwriting I was writing with my finger on my phone)

5 0
3 years ago
You are researching the average emails received per day. You want to know how many employees you should survey if you want to kn
IrinaK [193]

Answer:

The value is  n =29 \ employees

Step-by-step explanation:

Generally the number of employee to survey(sample size) is mathematically represented as

       n = [ \frac{z *  \sigma }{E} ]^2

Here E is the margin of error which is given as E = 47

So substituting 1.645 for z and   155 for  \sigma

     n = [ \frac{1.645 *  155 }{47} ]^2

=>    n =29 \ employees

     

         

5 0
4 years ago
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