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Crazy boy [7]
3 years ago
12

What is the value of the expression? 200 - 42 + 9 · 10

Mathematics
2 answers:
OleMash [197]3 years ago
7 0

Answer: 247

Step-by-step explanation:

Use PEMDAS order. (Parentheses, exponents, multiplication, division, addition, subtraction)

200 - 42 + 9 · 10

200-42+ 90

157+90

247

tekilochka [14]3 years ago
5 0

Answer:

248

Step-by-step explanation:

Given: 200 -42 + 9.10

First we have to multiply 9 and 10, we get

= 200  - 42 + 90

Now we have to the positive numbers 200 and 90

= 290 - 42

Subtract 42 from 200, we get

= 248

Answer : 248

Hope you will understand the concept.

Thank you.

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Joe paid 14.00 for a board game this is 70% off the original price what is the original price?
soldi70 [24.7K]

Answer:

The correct option is B.

Step-by-step explanation:

It is given that Joe paid 14.00 for a board game this is 70% of the original price what is the original price.

Let the original price of board game be x.

x\times \frac{70}{100}=14

x\times \frac{7}{10}=14

Multiply both sides by 10.

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Divide both sides by 7.

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3 years ago
20. Based on student records, 25% of the students at a large high school have a
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Answer:

(E) 0.71

Step-by-step explanation:

Let's call A the event that a student has GPA of 3.5 or better, A' the event that a student has GPA lower than 3.5, B the event that a student is enrolled in at least one AP class and B' the event that a student is not taking any AP class.

So, the  probability that the student has a GPA lower than 3.5 and is not taking any AP  classes is calculated as:

P(A'∩B') = 1 - P(A∪B)

it means that the students that have a GPA lower than 3.5 and are not taking any AP  classes are the complement of the students that have a GPA of 3.5 of better or are enrolled in at least one AP class.

Therefore, P(A∪B) is equal to:

P(A∪B) = P(A) + P(B) - P(A∩B)

Where the probability P(A) that a student has GPA of 3.5 or better is 0.25, the probability P(B) that a student is enrolled in at least one AP class is 0.16 and the probability P(A∩B) that a student has a GPA of 3.5 or better and is enrolled  in at least one AP class is 0.12

So, P(A∪B) is equal to:

P(A∪B) = P(A) + P(B) - P(A∩B)

P(A∪B) = 0.25 + 0.16 - 0.12

P(A∪B) = 0.29

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P(A'∩B') = 1 - P(A∪B)

P(A'∩B') = 1 - 0.29

P(A'∩B') = 0.71

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3 years ago
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taurus [48]
Key info-there are nine boys for every six girls on the softball team

9/6

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if there is 50 students on each of the teams

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Answer:

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