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Nadya [2.5K]
2 years ago
11

A word processing program requires a user to enter a 7-digit registration code made up of the digits 1,2,4,5,6,7 and 9. Each num

ber has to be used, and no number can be used more than once. How many codes are possible?
Mathematics
1 answer:
ahrayia [7]2 years ago
6 0
For the first digit there are 7 choices. For the second digit there are 6 choices (because we can't use the same one again). And so on, until there is only one choice for the last digit.

The number of possible codes is this:
7*6*5*4*3*2*1 = 7! = 5040
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Howard is designing a chair swing ride. The swing ropes are 4 44 meters long, and in full swing they tilt in an angle of 2 3 ∘ 2
qaws [65]

Question:

Howard is designing a chair swing ride. The swing ropes are 4 meters long, and in full swing they tilt in an angle of 23°. Howard wants the chairs to be 3.5 meters above the ground in full swing. How tall should the pole of the swing ride be? Round your final answer to the nearest hundredth.

Answer:

7.18 meters

Step-by-step explanation:

Given:

Length of rope, L = 4 m

Angle = 23°

Height of chair, H= 3.5 m

In this question, we are to asked to find the height of the pole of the swing ride.

Let X represent the height of the pole of the swing ride.

Let's first find the length of pole from the top of the swing ride. Thus, we have:

cos \theta = \frac{h}{L}

Substituting figures, we have:

cos(23) = \frac{h}{4}

Let's make h subject of the formula.

h = 4cos(23) = 3.68

The length of pole from the top of the swing ride is 3.68 meters

To find the height of the pole of the swing ride, we have:

X = h + H

X = 3.68 + 3.5

X = 7.18

Height of the pole of the swing ride is 7.18 meters

3 0
3 years ago
I can't find a down arrow soo look at the image please!!
Zina [86]

Answer:

the answer would be 16

Step-by-step explanation:

12 1/2 - -4 1/2=??? 1/2 - 1/2= 0 so 12 - -4=16

hope this helps

7 0
3 years ago
Read 2 more answers
Tax returns filed manually have a 20% chance of containing errors, while tax returns filed electronically have a 0.05% chance of
suter [353]

Answer:

B) 538, 650

Step-by-step explanation:

Given:

Errors on tax returns filed manually  = 20%

Errors on tax returns filed electronically  = 0.05%

Tax return filled in each way = 2.7 million

Manual filing:

2,700,000 x 20% = 2,700,000*0.2 = 540,000

Electronic filing:

2,700,000 x 0.05% = 2, 700,000*0.0005 = 1,350


Error difference = 540,000 - 1,350 = 538,650

There will be 538,650 more erroneous tax returns filed manually than there are filed electronically.

Thank you.

3 0
3 years ago
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Many artists incorporate geometric shapes into their art. An artist wants to make a sculpture shaped like a cone with a height o
bogdanovich [222]

Answer:D

Step-by-step explanation:

It’s D

4 0
2 years ago
IS THIS RIGHT???????????????????
Mnenie [13.5K]

Answer:

yes it is correct 10% is the answer

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