3 years ago

I hope some one can help me!

1 answer:

7 0

Given that:
μ = 36
σ = 3

Standardize x to z = (x - μ) / σ 
P( 39 < x < 42) = P[( 39 - 36) / 3 < Z < ( 42 - 36) / 3] 
P( 1 < Z < 2) = P( x < 2) - P( x < 1)
= 0.9772 - 0.8413
= 0.1359 

(0.1359)(30)
= 4.0777
= 4 days

You might be interested in

A ball is thrown straight upward and rises to a maximum

Leviafan [203]

Answer:

Explanation:

As we know that the ball is projected upwards so that it will reach to maximum height of 16 m

so we have

$v_f^2 - v_i^2 = 2 a d$

here we know that

$v_f = 0$

also we have

$a = -9.81 m/s^2$

so we have

$0 - v_i^2 = 2(-9.81)(16)$

$v_i = 17.72 m/s$

Now we need to find the height where its speed becomes half of initial value

so we have

$v_f = 0.5 v_i$

now we have

$v_f^2 - v_i^2 = 2 a d$

$(0.5v_i)^2 - v_i^2 = 2(-9.81)h$

$-0.75v_i^2 = -19.62 h$

$0.75(17.72)^2 = 19.62 h$

$h = 12 m$

3 0

4 years ago

A diverging mirror is .................

lyudmila [28]

Is there a multiple choice?

5 0

4 years ago

Which statement best describes scientific laws? (1 point)

erica [24]

Answer:

The best statement would be scientific laws describe phenomenon that can be observed in nature. Sometimes, laws are related to principle defining and predicting a certain happening without explaining its nature. It is different with ‘hypothesis’ or ‘theory’ as it aims to answer only the ‘what’ (observation only)...

Explanation:

hopefully this is correct

3 0

3 years ago

Identical cannonballs are fired with the same force, one each from four cannons having respective bore lengths of 1.0 meter, 2.0

ANEK [815]

I think its options 2 idk man

6 0

4 years ago

Read 2 more answers

7.According to the periodic table, how many total particles are there in the nucleus of a Titanium, Ti, atom?

FromTheMoon [43]

Answer:

there are 22 massive, positively charged, fundamental particles in the element's nucleus. Given this, the element is unquestionably titanium.

3 0

3 years ago