How can parentheses be added to the following equation to make it true?
1 answer:
Answer:
8 - (3 x 2) - (1 + 1) = 0
or
8 - 3 x 2 - (1 + 1) = 0
Remember PEMDAS.
If I put parenthesis around 3 x 2, I get 6.
But 8 - 6 = 2
How can we make 2 - 1 + 1 = 0?
If we look at PEMDAS, we know (2 - 1) + 1 = 2, but the answer needs to be 0.
So now try 2 - (1 + 1) and that gives me 0.
And it says parentheses...but you can also do 8 - 3 x 2 - (1 + 1) = 0.
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Answer:
x = -1.6
Step-by-step explanation:
To find the value of x
4x - 5 = -6x - 21
Transpose
4x + 6x = -21 + 5
10x = -16
x = -16/10
x = -1.6
Answer:
Step-by-step explanation:
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If AB and CD have the same slope, they are parallel.
If the product of the slopes of AB and CD is -1, they are perpendicular.
Answer: 86 cm
Step-by-step explanation:
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Answer:
3.25
Step-by-step explanation:
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Answer:
x = 5
y = -4/3
Step-by-step explanation:
2x + 3y = 6
x - 3y = 9
Substitution Method:
x = 3y + 9
2(3y+9) + 3y = 6
6y + 18 + 3y = 6
9y = -12
y = -12/9 or -4/3
x - 3(-4/3) = 9
x + 4 = 9
x = 5