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Lisa [10]
3 years ago
6

Aboardis 84 inch long it will be cut into 15 equal pieces what will be the length

Mathematics
1 answer:
elena-s [515]3 years ago
4 0

Answer:

each piece is 5.6 in

Step-by-step explanation:

84/15 = 5.6

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Find the value of x that makes the equation true: 7x = 70.
stich3 [128]

Answer: x = 10

Step-by-step explanation: 7x10 = 70

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A book falls from a shelf that is 5 feet above the floor. A model for the height h in feet if an object dropped from an initial
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Answer:

About 0.559 seconds

Step-by-step explanation:

The height equation is:

h=-16t^2+h_0

Where h_0 is the initial height of the book, which is 5, so we can write:

h=-16t^2+5

Now, we want time it took for the book to reach ground (h = 0)

So, we substitute h = 0 and solve for t:

h=-16t^2+5\\0=-16t^2+5\\16t^2=5\\t^2=0.3125\\t=0.5590\\t=0.559

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3 years ago
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2 years ago
Can someone factor this problem for me?
Likurg_2 [28]
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(3x-4y) (x-5y)

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8 0
2 years ago
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I need help ASAP! Can anyone please check my work?
STALIN [3.7K]

A = event the person got the class they wanted

B = event the person is on the honor roll

P(A) = (number who got the class they wanted)/(number total)

P(A) = 379/500

P(A) = 0.758

There's a 75.8% chance someone will get the class they want

Let's see if being on the honor roll changes the probability we just found

So we want to compute P(A | B). If it is equal to P(A), then being on the honor roll does not change P(A).

---------------

A and B = someone got the class they want and they're on the honor roll

P(A and B) = 64/500

P(A and B) = 0.128

P(B) = 144/500

P(B) = 0.288

P(A | B) = P(A and B)/P(B)

P(A | B) = 0.128/0.288

P(A | B) = 0.44 approximately

This is what you have shown in your steps. This means if we know the person is on the honor roll, then they have a 44% chance of getting the class they want.

Those on the honor roll are at a disadvantage to getting their requested class. Perhaps the thinking is that the honor roll students can handle harder or less popular teachers.

Regardless of motivations, being on the honor roll changes the probability of getting the class you want. So Alex is correct in thinking the honor roll students have a disadvantage. Everything would be fair if P(A | B) = P(A) showing that events A and B are independent. That is not the case here so the events are linked somehow.

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3 years ago
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