Which One Doesn't Belong? Which expression does not belong with the others? Explain your reasoning.
1 answer:
The expression that does not belong to the other group of expression is (c) 7(-2)(-5)
<h3>What are expressions?</h3>Expressions are mathematical statements that are represented by numbers and/or variables
The expressions are given as:
- 5(−3)(−1)
- (−4)2(−6)(−2)
- 7(−2)(5)
- −20(−6)
Start by evaluating all 4 expressions
Notice that three of the expressions return a positive result, while one of them return a negative result
The negative expression is the odd one among the four expressions
Hence, the expression that does not belong is (c) 7(-2)(-5)
Read more about algebraic expressions at:
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Let William be x years old.
Thomas = (4 + x) years
In five years,
William = (x + 5) years
Thomas = 4 + x + 5 = (9 + x) years
Given, in five years sum of their ages is 24.
x + 5 + 9 + x = 24
2x + 14 = 24
2x = 24 - 14
2x = 10
x =
x = 5
Hence, William is 5 years old and Thomas is 9 years old.
Thomas = (4 + x) years
In five years,
William = (x + 5) years
Thomas = 4 + x + 5 = (9 + x) years
Given, in five years sum of their ages is 24.
x + 5 + 9 + x = 24
2x + 14 = 24
2x = 24 - 14
2x = 10
x =
x = 5
Hence, William is 5 years old and Thomas is 9 years old.