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77julia77 [94]
3 years ago
14

Guidelines for a wheelchair ramp suggest that the ratio of the rise to the run be no greater than 1:12.design a wheelchair ramp

that provides access to a building with a front door 2.5 feet above the sidewalk
Mathematics
1 answer:
OLEGan [10]3 years ago
4 0
I have no idea tbh. I will try to find how to do it and help you!
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a slitter assembly contains 48 blades five blades are selected at random and evaluated each day for sharpness if any dull blade
son4ous [18]

Answer:

P(at least 1 dull blade)=0.7068

Step-by-step explanation:

I hope this helps.

This is what it's called dependent event probability, with the added condition that at least 1 out of 5 blades picked is dull, because from your selection of 5, you only need one defective to decide on replacing all.

So if you look at this from another perspective, you have only one event that makes it so you don't change the blades: that 5 out 5 blades picked are sharp. You also know that the probability of changing the blades plus the probability of not changing them is equal to 100%, because that involves all the events possible.

P(at least 1 dull blade out of 5)+Probability(no dull blades out of 5)=1

P(at least 1 dull blade)=1-P(no dull blades)

But the event of picking one blade is dependent of the previous picking, meaning there is no chance of picking the same blade twice.

So you have 38/48 on getting a sharp one on your first pick, then 37/47 (since you remove 1 sharp from the possibilities, and 1 from the whole lot), and so on.

Also since are consecutive events, you need to multiply the events.

The probability that the assembly is replaced the first day is:

P(at least 1 dull blade)=1-P(no dull blades)

P(at least 1 dull blade)=1-(\frac{38}{48}* \frac{37}{47} *\frac{36}{46}*\frac{35}{45}*\frac{34}{44})

P(at least 1 dull blade)=1-0.2931

P(at least 1 dull blade)=0.7068

5 0
3 years ago
Evaluate 7(m-11) if m =11
melamori03 [73]

Answer:

0

Step-by-step explanation:

Plug in 11 for m. Remember to follow PEMDAS. First solve the parenthesis, then multiply.

m = 11

7(m - 11) = 7(11 - 11) = 7(0) = 0

0 is your answer.

~

7 0
3 years ago
Read 2 more answers
What is an easy way to remember factoring?
ICE Princess25 [194]

Answer:

FOIL

Step-by-step explanation:

First

Outside

Inside

Last

If you dont fully understand look at the attachment

5 0
3 years ago
12 for charity walk 3 miles how much did his cousin pay per mile
WITCHER [35]
His cousin paid 4 per mile. You have to find the unit rate and you find that by dividing 12 by 3 which gives you 4. 
8 0
3 years ago
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Solve for x.<br><br> X+1/2=3/4
photoshop1234 [79]

Answer:

1/2 of 4 is 2

2/4 + 1/4 = 3/4

x =  1/4

Hope this helps!!!

Im here if you need anymore help.

4 0
3 years ago
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