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krek1111 [17]
2 years ago
13

A nail manufacturer throws out nails with lengths that are not within 0.05 inch of the mean of the batch. The lengths (in inches

) of the nails in a batch are 0.42 0.53 0.55 0.48 and 0.51 which nails should be thrown out
Mathematics
1 answer:
Natasha_Volkova [10]2 years ago
7 0

Answer:

0.42  & 0.55

Step-by-step explanation:

Mean length =  0.42 + 0.53+ 0.55 + 0.48 + 0.51/5

                     =  0.498

0.42 -  0.498  =   - 0.078‬    

0.53 -  0.498  =     0.032‬

0.55 -  0.498  =     0.052‬

0.48 - 0.498  =    - 0.018‬

0.51  - 0.498  =      0.012‬

The nails to be thrown out are:

0.42  & 0.55 because their deviations from the mean are not within 0.05 inch

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Answer:

t=4.6\times 10^{-4}\ s

Step-by-step explanation:

We have,

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Acceleration is 100000 m/s²

It is required to find the time taken by it to take the arm-club to get to 23 m/s. It means v = -23 m/s. It is based on the equation of kinematics such that :

v=u+at\\\\t=\dfrac{v-u}{a}\\\\t=\dfrac{-23-23}{100000}\\\\t=4.6\times 10^{-4}\ s

So, the time taken by it is 4.6\times 10^{-4}\ s.

5 0
2 years ago
A circular arena is lit by 5 lights equally spaced around the perimeter of the arena. What is the measure of each angle formed b
Artyom0805 [142]

Answer:

D. 108 degrees

Step-by-step explanation:

use the formula (n-2)180/n, n being number of sides.

In this case, the number of sides is 5.

plug it into the formula and solve:

(5-2)180/5

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6 0
2 years ago
Read 2 more answers
Suppose that the price per unit in dollars of a cell phone production is modeled by p= $45 -0.0125x, where x is in thousands of
qwelly [4]

Answer:

The production level that will maximize the revenue is 1800 (in thousands of phones produced), that is, production of 1,800,000 phones will maximize the revenue.

Step-by-step explanation:

The price per unit of phone is given as

p = 45 - 0.0125x

where x is in thousands of phones produced

Revenue = (price per unit) × (number of units)

Revenue = (45 - 0.0125x) × x

= (45x - 0.0125x²)

To find the maximum revenue, we need to obtain the maximum value of the revenue function.

R(x) = (45x - 0.0125x²)

At maximum point, (dR/dx) = 0 and (d²R/dx²) < 0

R(x) = (45x - 0.0125x²)

(dR/dx) = 45 - 0.025x

at maximum point, (dR/dx) = 0

(dR/dx) = 45 - 0.025x = 0

0.025x = 45

x = (45/0.025) = 1800

Hence, the production level that will maximize the revenue is 1800 (in thousands of phones produced)

That maximum revenue is thus

R(x) = (45x - 0.0125x²)

R(1800) = (45×1800) - (0.0125×1800²)

= 40,500

Hope this Helps!!!

7 0
2 years ago
The equation shown has a missing value. -2(2x-?)+1=17-4x. For what missing value(s), if any, does the equation have exactly one
faust18 [17]

Answer:

(4x-16)+1

Step-by-step explanation:

ABOVE^

8 0
2 years ago
A King in ancient times agreed to reward the inventor of chess with one grain of wheat on the first of the 64 squares of a chess
ANEK [815]

Answer:

See below in bold.

Step-by-step explanation:

Here is 1 grain on square 1 , 2 on square 2, 4 on square 3  and so on. This is a geometric sequence with the nth term = a1r^(n - 1) where a1 = first term , r = common ratio.

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Total =   a1 * (r^n - 1) / (r - 1)

=  (2^20 - 1)  / 2-1 =  1.048,575

7 0
2 years ago
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