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3 years ago

Witch operation should you do first when you simplify 85+ (25 x 5)?

Mathematics

2 answers:

olya-2409 [2.1K]3 years ago

7 0

Answer:

25X5

Step-by-step explanation:

If you follow the PEMDAS rule the first thing you must do is the equation inside the parenthesis.

Parenthesis

Exponents

Multiplication

Division

Addition

Subtraction

OleMash [197]3 years ago

5 0

Answer:

Whatever is in the parenthesis.

Step-by-step explanation:

A good way to remember what operation you should do first in these kinds of problems is: PEMDAS.

Each letter in PEMDAS stands for a function in problems, and it gives the order that you should do them in.

P - Parenthesis

E - Exponents

M - Multiplication

D - Division

A - Addition

S - Subtraction

1. Parenthesis; always comes first.

2. Exponents; always comes second.

3. Multiplication/Division; it does NOT matter which one you do first out of these two.

4. Multiplication/Division; whatever you didn't do on #3

5. Addition/Subtraction; it does NOT matter which one you do first out of these two.

6. Addition/Subtraction; whatever you didn't do on #5.

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Solve each inequality and graph the solution for b+8>15

adelina 88 [10]

B>23

Open dot going to the right

5 0

3 years ago

Jenna collected data modeling a company's company costs versus its profits. The data are shown in the table:

Zarrin [17]

Statement 3:

The function is increasing from x = 0 to x = 1 is the true statement.

Solution:

Statement 1: The function is decreasing from x= –2 to x = 1

At x = –2, the function value is 2.

At x = –1, the function value is –3.

At x = 0, the function value is 2.

At x = 1, the function value is 17.

So, the value of the function is not constantly decreasing or increasing.

Hence it is false statement.

Statement 2: The function is decreasing from x = –1 to x = 0

At x = –1, the function value is –3.

At x = 0, the function value is 2.

From –3 to 2, the value is increasing.

Hence it is false statement.

Statement 3: The function is increasing from x = 0 to x = 1

At x = 0, the function value is 2.

At x = 1, the function value is 17.

Hence it is true statement.

Statement 4: The function is decreasing from x = 0 to x = 1

It is already proved in statement 3.

Hence it is false statement.

Therefore, the function is increasing from x = 0 to x = 1 is the true statement.

3 0

3 years ago

A plane ticket to Hawaii costs $986.

maria [59]

Using the given discrete distribution, it is found that the expected value is of $863.93.

<h3>What is the mean of a discrete distribution?</h3>

The expected value of a discrete distribution is given by the <u>sum of each outcome multiplied by it's respective probability</u>.

In this problem, the distribution of costs is given by:

P(X = 986) = 0.87.

P(X = 47) = 0.13.

Hence, the expected value is given by:

E(X) = 0.87 x 986 + 0.13 x 47 = $863.93.

More can be learned about discrete distributions at brainly.com/question/24855677

#SPJ1

7 0

2 years ago

Solve each problem below. Show your steps. The Yellow Cab Company charges just $0.25 a mile, but it costs $5 to get in the cab.

Dmitry_Shevchenko [17]

14. $5+$.25x=y
15. $1.5x=y
16. Yellow cab, 5+.25(7)=6.75
17. Express cab, 1.5(3)=4.50

3 0

3 years ago

HELP ME ASAP WHAT IS THIS ANSWER

ollegr [7]

Answer:

These kind of problems are super difficult Anna, don't feel bad for not getting this. there is a bunch of "implied" ideas here... i'll go over them below, maybe it will seem a bit easier. if not, ask some more questions in the comments of this problem , I'll see the comments and answer your question

Step-by-step explanation:

the 1st implied idea is that there is 360 ° in a circle

next you have to know, that the angle x is also matched on the interior of the circle where the line of the angle x, first touches the circle. if that is confusing , don't worry i'll make a rough drawing to show you.

so we can know that the arc from the point where the angle x makes the tanget.. or just touches the circle to where it's other leg crosses the circle the 1st time, that's angle is equal to the arc that is left over from the total circle. see this is very "implied" nobody said.. by the way... it's 360 ° minus the other arcs.. well.. I just did.. but you had to come up with that on your own, before I said that.

x = left over arc

360 = 200 + 40 + x

120 = x

6 0

3 years ago