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DiKsa [7]
3 years ago
11

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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M ∠1 = ?<br><br> 40<br> 50<br> 130<br><br> pls help!!
snow_tiger [21]

Answer:

40

Step-by-step explanation:

In the triangle, there is a 90 degree angle and Angle 1 (what we are looking for) and the other angle, lets call is Angle 2.

Lets find Angle 2 first.

First of all, the angle between angle 40 and 90 can be found easily.

That angle (lets call it "x) and 40 and 90 make a straight angle (180 degrees). So we can write:

40 + x + 90 = 180

Lets solve for "x":

40 + x + 90 = 180

130 + x = 180

x = 180 - 130

x = 50

Now, This angle (50) and Angle 2 are same [vertical angles]

So,

Angle 2 = 50

Now, there are 180 degrees in 3 angles in a triangle. So for the triangle shown, we cacn write:

90 + Angle 1 + Angle 2 = 180

90 + Angle 1 + 50 = 180

Angle 1 + 140 = 180

Angle 1 = 180 - 140

<u>Angle 1 = 40</u>

4 0
3 years ago
This Venn diagram shows sports played by 10 students
maksim [4K]

Hello! :)

P (a or b) means

P (a+b)

So the blue side and the red side of the diagram have students so add them up:

3+2=5

Then the ratio

blue and red/total number of students

5/10

(10 students)

So simplify:

1/2

Hope I helped and answered in time!

Good luck!

~ Destiny ^_^

4 1
3 years ago
Read 2 more answers
2. Tina had $10. She spent $6 at the movie. a) What fraction of the money was not used? b) Calculate the percentage of money not
gregori [183]

Answer:

a) 2/5

b) 40%

Step-by-step explanation:

Tina had $10.

a)

10-6=4

4/10=2/5

b)

2/5x20/20=40/100

=40%

Hope this helps :)

3 0
3 years ago
What is 22,119 rounded to the nearest hundred?
Law Incorporation [45]
Look at the 119. Would you say this is closer to 200 or 100? The answer is 22100. You just have to isolate what you are really looking at.
4 0
3 years ago
{2x+7y=-20<br> {x-3y=16<br> Solve for systems of equations
IRISSAK [1]

By solving the linear equations we get the final values of x = 4 & y = 4.

What is the linear equation?

A linear equation is an algebraic equation of the form y=mx + b, where m is the slope and b is the y-intercept, and only a constant and a first-order  term are included.

We have,

               2x + 7y = -20           ----------(i)

                x - 3y = 16               ----------(ii)

By multiplying equation (ii) with 2 we get,

               2x + 7y = -20 ---------(III)

               2x - 6y = 32 -----------(IV)

taking subtraction of equations (III) and (IV), we get

               y = 4

by putting value of y in equation (ii) we get,

               x = 4

Hence by solving the linear equations we get the values of x = 4 & y = 4.  

To learn more about SAS similarity theorem visit,

brainly.com/question/1884491

#SPJ13

5 0
1 year ago
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