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Ira Lisetskai [31]
3 years ago
10

How is the following worked out? 9 x 9 + 9 / 9 - 9 =

Mathematics
2 answers:
aleksley [76]3 years ago
6 0
Following PEMDAS, it states that you should start with parenthesis first. In this case, there are none, so you find exponents. Again, there isn't any, so you move onto multiplication. And yes, there is. 
Although, keep in mind that if there is multiplication and division, you don't ALWAYS do multiplication first. If there is both multiplication and division just start from the left to the right. 
1) So, the first step to solving this problem is taking 9 x 9 which is 81.
2) The second step would be skipping over to the division and solve 9/9 which is 1. 
3) Now, your equation is 81 + 1 - 9 = 
4) The fourth step to solve this equation is follow pemdas and solve. PEMDAS states that you do addition before subtraction. Although, if there is addition and subtraction at the same equation just go from left to right. 
5) 81 + 1 - 9 = 82 - 9 = 73

The answer would then be 73.
Sladkaya [172]3 years ago
5 0
Start from the beginning 9 x 9 is 72
72 + 9 is 81 Then 81 divide by 9 which is 9 then 9 - 9 Is 0
So the answer to that is 0 hope i helped! :) 
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Ivenika [448]

Answer:

It is not.

Step-by-step explanation:

The formula of a right triangle is "a^{2}+b^{2}  =c^{2}" where c is the hypothenuse (the longest side of the triangle) if we replace the formula with the values we will get

  "30^{2} +122^{2} =125^{2} \\900 + 14884 = 15625\\15784\neq 15625

3 0
3 years ago
The measure of ∠BAC is π/3 radians and the measure of ∠CAD is π/2 radians. What is the measure of ∠BAD?
GREYUIT [131]

9514 1404 393

Answer:

  5π/6 radians

Step-by-step explanation:

The whole is the sum of the parts.

  ∠BAD = ∠BAC +∠CAD

  ∠BAD = π/3 + π/2 = π(2/6 + 3/6)

  ∠BAD = 5π/6

6 0
3 years ago
Mark and Don are planning to sell each of their marble collections at a garage sale. If Don has 1 more than 3 times the number o
Margaret [11]

Answer:

Mark has 13 marbles

Don has 40 marbles

Step-by-step explanation:

Let the number of Mark's Marbles = M

Let the number of Don's Marble = D

D = 1 + 3M - - - - (1)  (Don has 1 more than 3 times the number of marbles Mark has)

D + M = 53 - - - - - (2) (total number of marbles is 53)

puttin the value of D from equation (1) into equation (2)

(1 + 3M) + M = 53

1 + 3M + M = 53

1 + 4M = 53

4M = 53 - 1 = 52

4M = 52

M = 52 ÷ 4

M = 13

finding D by putting the value of M (M = 13) into equation 1

D = 1 + 3M - - - - (1)

D = 1 + 3 (13)

D = 1 + 39

D = 40

∴ Mark has 13 marbles

Don has 40 marbles

4 0
4 years ago
Which expression is the right expression?
Juli2301 [7.4K]
D, you have to factor 3 out of 6x squared
5 0
4 years ago
Help if you understand circles. Thanks
Whitepunk [10]
It’s just there to be there it means nothing hope it helps!
4 0
3 years ago
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