i want 2 know if these are correct!!!!
5+6*3-2=21
4^2+7(3-(-5))=26.15
4*9/2+(-4+6)=36
(2.3+7.8)*4+3=43.4
((2*4)+3)*6/2=33
-3-/-3+6-4=5.3
((4+11)*-3)/9*-3=.48
thank u..
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5+6*3-2=21 yes
4^2+7(3-(-5))=26.15
16 +7(8) = 16 + 56 = 72
4*9/2+(-4+6)=36
18 + 2 = 20
(2.3+7.8)*4+3=43.4 yes
((2*4)+3)*6/2=33 yes
-3-/-3+6-4=5.3 do not understand -3-/-3
((4+11)*-3)/9*-3=.48
this is some kind of a typo 9*-3
assume you mean
-5*(-3) = 15
come on everybody cant u help correct this 4 me please.hurry
thank u Damon
To verify if the given mathematical expressions are correct, we can simply evaluate them using the standard order of operations. Here's how to solve each expression step-by-step:
1. 5 + 6 * 3 - 2
To solve this expression, we need to follow the order of operations which states that multiplication and division should be done before addition and subtraction. Therefore:
6 * 3 = 18
5 + 18 - 2 = 21
So, the result is correct: 5 + 6 * 3 - 2 = 21.
2. 4^2 + 7(3 - (-5))
In this expression, we have parentheses, exponentiation, and multiplication. Let's solve it step-by-step:
3 - (-5) = 3 + 5 = 8
4^2 = 4 * 4 = 16
7 * 8 = 56
16 + 56 = 72
So, the result is incorrect. The correct answer to 4^2 + 7(3 - (-5)) is 72, not 26.15.
3. 4 * 9 / 2 + (-4 + 6)
Following the order of operations:
(-4 + 6) = 2
4 * 9 = 36
36 / 2 = 18
18 + 2 = 20
So, the result is incorrect. The correct answer to 4 * 9 / 2 + (-4 + 6) is 20, not 36.
4. (2.3 + 7.8) * 4 + 3
Let's solve this expression:
2.3 + 7.8 = 10.1
10.1 * 4 = 40.4
40.4 + 3 = 43.4
So, the result is correct: (2.3 + 7.8) * 4 + 3 = 43.4.
5. ((2 * 4) + 3) * 6 / 2
Following the order of operations:
2 * 4 = 8
8 + 3 = 11
11 * 6 = 66
66 / 2 = 33
So, the result is correct: ((2 * 4) + 3) * 6 / 2 = 33.
6. -3 - (-3) + 6 - 4
Let's solve this expression:
(-3) - (-3) = -3 + 3 = 0
0 + 6 = 6
6 - 4 = 2
So, the result is incorrect. The correct answer to -3 - (-3) + 6 - 4 is 2, not 5.3.
7. ((4 + 11) * -3) / 9 * -3
Following the order of operations:
4 + 11 = 15
15 * -3 = -45
-45 / 9 = -5
-5 * -3 = 15
So, the result is incorrect. The correct answer to ((4 + 11) * -3) / 9 * -3 is 15, not 0.48.
In summary, out of the given expressions, only 5 + 6 * 3 - 2 = 21 and (2.3 + 7.8) * 4 + 3 = 43.4 are correct, while the others have incorrect results.