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Solnce55 [7]
4 years ago
7

A rocket moves through outer space at 10,500 m/s. At this rate how much time would be required to travel the distance from Earth

to the moon, which is 380,000 km?
Mathematics
2 answers:
Orlov [11]4 years ago
8 0

Answer:

The answer is around 27.63 seconds.

Step-by-step explanation:

1 km equals 1000 meters so we have to multiply 10,500 and 1,000 which would equal 10,500,000 km. 10,500,000 divided by 380,000 which is around 27.63 seconds.

LuckyWell [14K]4 years ago
6 0
The answer is around 27.63 seconds
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3 years ago
What is the answer for 2x-3
Elis [28]

Answer:

2x-3

x=-3/2...

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5 0
3 years ago
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Make a line plot of the data with the numbers 22,19,14,15,19,16,21,10,19
olchik [2.2K]

Step-by-step explanation: To draw a line plot for the data shown here, first begin by drawing a line.

Next, notice that the smallest number in our data set is 10 so we begin our line plot at 10. Next, notice that the greatest number in our data set is 22 so we continue our line plot until 22.

Now we fill in the numbers in between.

So we have 10 which we already have, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, and 22.

Now, notice that there is one 10 in our data set so we put one x above 10. Next, notice that are no 11's, no 12's, and no 13's in our data set. So we put no x's above 11, no x's above 12, and no x's above 13. Next, notice that there is one 14 in our data set so we put one x above 14. Now, notice that there is one 15 and one 16 in our data set so we put one x above 15 and one above 16. Since there are no 17's or 18's in our data set, we put no x's above 17 and no x's above 18. Finally, notice that there is three 19's, no 20's, one 21, and one 22 in our data set so we put three x's above 19, and one x above 21 and 22. We put no x's above 20.

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5 0
3 years ago
A company manufactures a wash-down motor that is used in the food processing industry. The motor is marketed with a warranty tha
scZoUnD [109]

Answer:

a)  P [ X ≤ 12000 ]  = 0.0262      or      2.62 %

b) P [ X > 16100]  = 0,0228    or   2,28 %

X = 13479,2 hours    or    13500 hours  

Step-by-step explanation:

Normal Distribution

μ₀  = 14000    hours   and        σ  =  1050    hours

a) Probability of X  (replacement of motor free of charge)

Z = ( X - μ₀ ) /  σ

Z  =  ( 12000- 14000) / 1050

Z  =  - 2000/1050

Z = - 1,904    

From z Table we get

for  z = -1.904       P [ X ≤ 12000 ]  = 0.0262

P [ X ≤ 12000 ]  = 0.0262      or      2.62 %

b) What % of motors can be expected to operate more than 16100 hours

z = ( 16100 - 14000) / 1050

z = 2100/1050     ⇒   2

From z table we find with z = 2 total number f motor operating up to 16100 hours

From z table    we find 0,9772

Then probability of motors operating for more than 16100 hours is:

P [ X > 16100]  =  1  -  0.9772    =  0,0228

Then

P [ X > 16100]  = 0,0228    or   2,28 %

c) The average hours of operation before failures if only 1% of motors would be replaced free of charge is:

1%  = 0,01    Probability then z score is  z = 0,4960

0,4960  =  ( 14000 - X ) / 1050

0,4960 * 1050 = ( 14000 - X )

520,8 - 14000 =  - X

X = 13479,2 hours  as is not common such offer company could set up guarantee for  13500 h

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4 years ago
1. Rút gọn biểu thức A(x) = (x+2)(x+3)(x+5) - (x-1)(x+4)(x+7). Từ đó tìm tất cả các giá trị x sao cho A(x) = 0.
zepelin [54]

x = -29/7

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A(x) = 0 => 14x + 58 =0 => x = -58/14 = -29/7

4 0
3 years ago
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