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3 years ago

Ronnie's teacher wrote this expression on the board. (-4)(2) + (10/2) What is the value of this expression?

Mathematics

1 answer:

azamat3 years ago

5 0

Answer:

The answer would be -3.

Step-by-step explanation:

If you follow PEMDAS, the first set of parenthesis, (-4)(2), would equal -8. The next set of parenthesis, (10/2), would equal 5. Adding -8 and 5 together gives you -3.

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ladessa [460]

Answer:

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4 years ago

What is the volume of this rectangular prism?<br> 10/3 <br> 4/5<br> 1/5

Lunna [17]

Answer:

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Step-by-step explanation:

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3 years ago

Read 2 more answers

Hospital records show that a certain surgical procedure takes on an average 111.6 minutes with a standard deviation of 2.8 minut

Arisa [49]

Answer:

At least 37.74% of the procedures takes between 97.6 and 125.6 minutes

Step-by-step explanation:

The percentage is the area of the standard normal distribution curve between the values 97.6 and 125.6

The standard normal variate of the given data is found as

$Z=\frac{X-\overline{X}}{\sigma }$

Thus for the given values Z is calculated as under

$Z_1=\frac{97.6-111.6}{2.8}=-5$

Similarly for the other value we have

$Z_2=\frac{125.6-111.6}{2.8}=5$

Thus the area between the calculated values can be found from standard normal distribution table to be 37.74%

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3 years ago

One crew can seal a parking lot in 12 hours and another in 15 hours. how long will it take to seal the parking lot if the two cr

MakcuM [25]

This is a typical work problem in algebra. The approach to this is using the equation: Rt = 1, where R is the rate per person working, t is the amount of time worked by an individual. All their rates must equal to 1. The solution is as follows:

12/x + 15/x = 1
Solving for x,
x = 27 hours

So, if they work together, they can finish the work in 27 hours.

6 0

3 years ago

1 dozen of eggs for Rs 84 or 18 eggs for Rs 117 . Which is the best buy in the following cases. full explanation

elixir [45]

Answer:

18 eggs for Rs 117

Step-by-step explanation:

Divide 84 by 12 (Dozen = 12) and you get 7 which means every egg is for Rs. 7

Divide 117 by 18 and you get 1.39 which means every egg is for Rs. 1.39

8 0

2 years ago