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3 years ago

What does X equal when the square root of six equals three times X

Mathematics

2 answers:

Alekssandra [29.7K]3 years ago

8 0

Answer:

0.81649658092

Step-by-step explanation:

The square root of 6 equals 2.44948974278. Divide that by 3, and you are given 0.81649658092.

aliya0001 [1]3 years ago

4 0

Answer:3x+1=x2-6x+9

Step-by-step explanation: three square is nine so a square root of nine is 3

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In a manufacturing process a random sample of 9 bolts manufactured has a mean length of 3 inches with a standard deviation of .3

Serggg [28]

Answer:

The correct option is (C) (2.769, 3.231).

Step-by-step explanation:

The confidence interval for mean when the standard deviation is not known is:

$CI=\bar x\pm t_{\alpha/2, (n-1)}\frac{s}{\sqrt{n}}$

Given:

$\bar x = 3\\s=0.3\\n=9\\\alpha =1-0.95=0.05$

Compute the critical value as follows:

$t_{\alpha/2, (n-1)}=t_{0.05/2, (9-1)}=t_{0.025, 8}=2.31$

**Use a t-table.

The 95% confidence interval for true mean length of the bolt is:

$CI=\bar x\pm t_{\alpha/2, (n-1)}\frac{s}{\sqrt{n}}\\=3\pm 2.31\times \frac{0.30}{\sqrt{9}}\\ =3\pm 0.231\\=(2.769, 3.231)$

Thus, the 95% confidence interval for true mean length of the bolt is (2.769, 3.231).

The correct option is (C).

7 0

3 years ago

I need help finding the circumference of this circle

Alla [95]

Radius times 2 = diameter which would be 10 times 3.14 is 31.4 so it’s 31.4

6 0

3 years ago

A woman bought some large frames for $18 each and some small frames for $8 each at a closeout sale. If she bought 21 frames fo

IrinaVladis [17]

Answer:

8 large frames and 13 small frames

Step-by-step explanation:

Given:
$18 each = large frames

$8 each = small frames

To Find:

⇒ Bought 21 frames for $248, find how many of each type she bought

Solve:

1 Large frame costs = 18 $

Therefore, x large frames costs = 18x $

{where x is the number of large frames she bought}

1 Small frame costs = 8 $

Therefore, x Small frames costs = 8y $

{where y is the number of small frames she bought}

By the given condition :

18x + 8y = 248 {equation 1}

x + y = 21 {equation 2}

Solve these equations simultaneously, from second equation we get :

x = 21- y

18⋅(21−y)+8y= 248

378 - 18y+8y = 248

-10y = -130

y = 13

Put y = 13 in eq x = 21- y

x = 21 - y

x = 21 - 13

x = 8

So the woman bought 8 large frames and 13 small frames.

~lenvy~

5 0

2 years ago

And 2015 the price of business math text Rose $210 this is 9% more than 2014 price what is old selling price round to the neares

Anni [7]

$210 x .09 = $18.90 is the increase...
so the price 2014 was $191.10

8 0

3 years ago

Read 2 more answers

What is 18/25 subtracted by 41/50

mars1129 [50]

let the no. be x

41/50 - x = 18/25

x=41/50 - 18/25 = (41 - 36)/50 = 5/50 = 1/10

1/10 should be subtracted from 41/50 to get 18/25

HOPE THIS WILL HELP U

8 0

3 years ago

Read 2 more answers