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Masteriza [31]
2 years ago
5

How do I know when to multiply divide subtract or add

Mathematics
2 answers:
BabaBlast [244]2 years ago
7 0
Ummm if I understand the question there will be symbols.

Addition is +
Subtraction is -
Multiplication is * or x
Division is /

If you have an expression use PEMDAS like ChrisR described.
Pani-rosa [81]2 years ago
4 0
PEMDAS is very helpful to remember when thinking of order of operations. Parentheses, Exponents, Multiply, Divide, Add, then Subtract. Always in that order. 

If you are talking about something more specific you may want to give a bit more information.
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3,14 x (200 - 175)2 - 150 Round your answer off to the nearest whole .​
RideAnS [48]

Answer:

7

Step-by-step explanation:

I assume that 3,14 is 3.14

=3.14 x (200-175)2 - 150

=3.14 x (25)2 - 150

=3.14 x 50 - 150

=157-150

=7

7 0
2 years ago
13.At the Finch School bake sale, donuts sell
aliina [53]

Answer:

c)

Step-by-step explanation:

create a system of equations:

d + m = 104

2d + 3m = 243

now use substitution method based on 'd = 104 - m'

2(104 - m) + 3m = 243

208 - 2m + 3m = 243

208 + m = 243

m = 35

So, 35 muffins and 69 donuts were sold.

This is 34 more donuts than muffins.

7 0
2 years ago
8,36 : 1,6<br><br><br><br> pleaseeeeeeeeee
Lyrx [107]

Answer:

  209 : 40  or  5.225 : 1

Step-by-step explanation:

Your calculator can tell you the ratio 8.36/1.60 is 5.225. Writing that decimal as a fraction, you can factor out 25 to get ...

  8.36 : 1.6 = 5.225 : 1 = 5225 : 1000 = (25)(209) : (25)(40) = 209 : 40

4 0
3 years ago
Represent the set of numbers as decimals on the number line {5 3/10, 5 1/10, 5 and if you answer more than needed thank you
Alina [70]

Answer:

(0.53 > 0.51) both less than 1 while 5 is greater than both

Step-by-step explanation:

\frac{53}{10} = .53, \frac{51}{10} = .51. and 5

the number line has two sides, with the left side for negative numbers while the right side is for positive numbers.

             <u>                                                                                 </u>

              -5  -4  -3  -2  -1  -.53  -.51   0  .51 .53  1  2  3  4  5            

By studying the number line above all decimal numbers greater than 0 but less than 1 are from 0, .1, .2,.........,.98, .99, 1.00 which is also the same as 1 because all numbers greater than 1 has an invisible point at its right side like 2., 3. which also means 2, 3 while negative number are all less than 0

7 0
3 years ago
Find the area of the shape below.
fgiga [73]

Answer:

240

Step-by-step explanation:

The top triangle has an area of 40 while the bottom rectangle has an area of 200. Add them together and you get 240

3 0
2 years ago
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