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Debora [2.8K]
3 years ago
12

Explain how place value could be used to find the difference of $4.23 and $2.75

Mathematics
1 answer:
frozen [14]3 years ago
5 0
I don't know if this is what you mean by your question but can be broken down by place value into 4, 0.20 and 0.03. 2.75 can be broken down into 2, 0.70, and 0.05. Then subtract the same place values from each and you will get 1.48
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A study of college business majors included 150 sophomores and 200 juniors. The study showed that 80 sophomores and 150 juniors
vlabodo [156]

Answer:

0.3478

Step-by-step explanation:

Given:-

- The number of sophomore, S = 150

- The sophomore and had summer internship, x = 80

- The number of juniors, J = 200

- The junior and had summer internship, y = 150

Find:-

What is the probability that the person is a sophomore given that the person had a summer internship?

Solution:-

- The total sum of sophomore and junior students is N:

                         N = S + J

                         N = 150 + 200

                         N = 350 students.

- We will denote event A as random selection of sophomore from total.

- We will denote event B as random selection of student who had summer internship.

- We are to determine the conditional probability that a person selected is sophomore given that the person had a summer internship. That is the probability of event A given that event B has already occured.

- The conditional probability can be written as:

                        P ( A / B ) = P ( A & B ) / P ( B )

Where,

        P ( A & B ) : The probability the person is a sophomore and had a summer internship.

        P ( B ): The probability that the person selected had a summer internship.

                      P ( A & B ) = x / N

                                        = 80 / 350

                                        = 0.22857143

                     P ( B ) = ( x + y ) / N

                               = ( 80 + 150 ) / 350 = 230/350

                               = 0.65714286

Therefore the required probability is:

           

                     P ( A / B ) = 0.22857143 / 0.65714286

                                      = 0.3478  ... Answer

                                       

                         

6 0
3 years ago
How do you use the product rule to find the derivative of y=x2⋅sin(x)y=x^2*sin(x) ?
zvonat [6]
(f(x)\cdot g(x))'=f'(x)\cdot g(x)+f(x)\cdot g'(x)\\\\
y=x^2\sin x\\
y'=2x\cdot \sin x+x^2\cdot \cos x\\
y'=x(2 \sin x+x\cos x)
6 0
3 years ago
Which lists the multiple of 8 A. 8,16,24, 46 B.8,16,24,48 C.8,15,32,50 D.8,16,40,63
Hatshy [7]

Answer:

Its a 8 16 24

Step-by-step explanation:

they are all multiples of 8.  a Cntd. list is 8 16 24 32 40 48 56

8 0
2 years ago
Read 2 more answers
Write down the size of angle ABC give a reason for your answer
solong [7]

Answer:

∠ ABC = 90°

Step-by-step explanation:

∠ ABC is the angle in a semi circle and is right, that is

∠ ABC = 90°

6 0
3 years ago
Solve for x. Write the reasons next to each step.<br> (2x - 6)<br> (x + 40)
solniwko [45]

Answer:

The answer for first one is,

2(x - 3)

sorry I don't know the answer for second one.

3 0
2 years ago
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