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Masteriza [31]
3 years ago
5

How do I know when to multiply divide subtract or add

Mathematics
2 answers:
BabaBlast [244]3 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]3 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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A pair of shoes that normally sells for $82.88 goes on sale for 35% off. Rounding up to the nearest cent, calculate the sale pri
Maksim231197 [3]

Answer:

$54.00

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
1)cot a/2 -tan a/2 = 2 cot a<br>2) cot b/2 + tan b/2= 2 cosec b<br> prove​
VladimirAG [237]
1)

LHS = cot(a/2) - tan(a/2)

= (1 - tan^2(a/2))/tan(a/2)

= (2-sec^2(a/2))/tan(a/2)

= 2cot(a/2) - cosec(a/2)sec(a/2)

= 2(1+cos(a))/sin(a) - 1/(cos(a/2)sin(a/2))

= 2 (1+cos(a))/sin(a) - 2/sin(a)) (product to sums)

= 2[(1+cos(a) -1)/sin(a)]

=2cot a

= RHS

2.

LHS = cot(b/2) + tan(b/2)

= [1 + tan^2(b/2)]/tan(b/2)

= sec^2(b/2)/tan(b/2)

= 1/sin(b/2)cos(b/2)

using product to sums

= 2/sin(b)

= 2cosec(b)

= RHS
8 0
3 years ago
Find the mode of 3, 6, 4, 3, 2, 4, 7, 8, 6, 3, 9
lions [1.4K]

Answer:

3 is the mode because it appears most often.

Step-by-step explanation:

8 0
3 years ago
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What is the simplified expression for the expression below?
Viktor [21]

Answer:

-2x + 3

Step-by-step explanation:

-5x/5 - 20/5 - 4x/4 + 28/4 ➡-x - 4 -x +7 ➡-2x + 3

8 0
3 years ago
If 6 people want to share a 30 pound bag of beans equally by weight how many pounds of beans should each person get? Between wha
sertanlavr [38]

Answer:

The 6 people would each get 5lb. of beans. 5 lies between 4 and 6.

Step-by-step explanation:

To get the answer to this problem, all you have to do is divide the total pounds of beans by how many people there are. 30 ÷ 6= 5, so each person would get 5 pounds. Since 5 comes between 4 & 6, you can use that as your answer.

6 0
3 years ago
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