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Neko [114]
3 years ago
6

Solve for x... I dont know what to do with the square root

Mathematics
1 answer:
Artemon [7]3 years ago
8 0
√(x²+13)=2+x
[√(x²+13)]² = (2+x)²
x²+13=4+4x+x²
x²-x²-4x=4-13
-4x=-9
x=-9/-4
x=9/4

To check:
√(x²+13)=√(81/16  +13)=√[(81+208)/16]=√(289/16)=17/4.
2+x=2 + 9/4=(8+9)/4=17/4

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Find the common ratio of the geometric sequence-15,-30,-60
blondinia [14]

Answer:

2

Step-by-step explanation:

The common ratio of the sequence is 2 because between each term you are multiplying by 2 to get the next term

7 0
3 years ago
What is 2.602 as a mixed number
MrRa [10]
I think that it is 2 602/1000
6 0
3 years ago
Your sample size is 10 and your confidence is 90%. What is your t-score?
PilotLPTM [1.2K]

Answer:

if you want a t*-value for a 90% confidence interval when you have 9 degrees of freedom, go to the bottom of the table, find the column for 90%, and intersect it with the row for df = 9. This gives you a t*–value of 1.833 (rounded).

Step-by-step explanation:

Hope this helps!

6 0
3 years ago
A.Calculate the mean,median and mode.(3 points each) 1.)1,2,3,4,5 2.)2,3,4,5,6,6 3.)6,7,5,4,5,6,2,5
zlopas [31]

Answer:

Step-by-step explanation:

1.)1,2,3,4,5

mean=sum of all values/number of values

         =1+2+3+4+5/5

         =15/5

mean=3

Mode :

In the given data, no observation occurs more than once.

Hence the mode of the observations does not exist, means mode=0.

Median

1,2,3,4,5

Middle value is 3 so the median is 3.

2.)2,3,4,5,6,6

mean=sum of all values/number of values

         =2+3+4+5+6+6/6

         =26/6

mean =4.33

Mode

      is that value of the observation which occurs maximum number of times so here mode is 6.

Median

2,3,4,5,6,6

 4+5/2

9/2

median=4.5

3.)6,7,5,4,5,6,2,5

mean=sum of all values/number of values

         =6+7+5+4+5+6+2+5/8

        =40/8

mean =5

Mode

is that value of the observation which occurs maximum number of times so here mode is 5

Median

2,4,5,5,5,6,6,7

5+5/2

10/2

median=5

 

5 0
3 years ago
Please help me. i don't remember how to do this stuff so please explain it.
AVprozaik [17]

Answer:

which class are you read in?

actually don't know ans

Step-by-step explanation:

hope it's helpful to you

gud nyt

sweet dreams

8 0
3 years ago
Read 2 more answers
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