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Snezhnost [94]
3 years ago
9

How can you use scale models to solve problems

Mathematics
1 answer:
tino4ka555 [31]3 years ago
6 0
<span>Scale drawings make it easy to see large things on paper, like a house or road</span>
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A multiple-choice standard test contains total of 25 questions, each with four answers. Assume that a student just guesses on ea
weqwewe [10]

Answer:

a)  8*88*10⁻⁶ ( 0.00088 %)

b) 0.2137 (21.37%)

Step-by-step explanation:

if the test contains 25 questions and each questions is independent of the others, then the random variable X= answer "x" questions correctly , has a binomial probability distribution. Then

P(X=x)= n!/((n-x)!*x!)*p^x*(1-p)^(n-x)

where

n= total number of questions= 25

p= probability of getting a question right = 1/4

then

a) P(x=n) = p^n = (1/4)²⁵ = 8*88*10⁻⁶ ( 0.00088 %)

b) P(x<5)= F(5)

where F(x) is the cumulative binomial probability distribution- Then from tables

P(x<5)= F(5)= 0.2137 (21.37%)

7 0
3 years ago
Help needed! How do I solve this?<br>Excuse the answers that are already in there!
anastassius [24]
1) 108
2) 72
3) 36
4) 72
5) 72
6) 144
7) 72
8) 72
9) 108
10) 108
I hope this helped
8 0
3 years ago
Timothy's swim practice started at
Lynna [10]

Answer:

1 hour and 15 minutes

Step-by-step explanation

There are 60 minutes in an hour. Add 15 minutes to get to 3:00 pm. From 3:00 pm to 4:00 pm is 1 hour. 15 minutes + 1 hour is 1 hour and 15 minutes

Hope this helps!

6 0
1 year ago
Using the information in the table, how many feet are in 6 yards?
Goryan [66]

Answer:

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Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
If 79.5% of married couple households are both native and 13.2% are both foreign, then (a) what percentage of married couple hou
Zanzabum

Answer:

The correct solution is "7.3%".

Step-by-step explanation:

It seems that the given question is incomplete. Find below the attachment of the complete and appropriate query.

According to the question,

The total married couples are,

= 55,550,000

where,

Both native = 79.5%

Both foreign = 13.2%

Now,

The percentage of couple that is one native as well as one foreign will be:

= 100-79.5-13.2

= 7.3 (%)

7 0
3 years ago
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