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What is the value of x? A)3 B)6 C)7 D)11
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What is the value of x?
A)3
B)6
C)7
D)11

What is the value of x? A)3 B)6 C)7 D)11-example-1
User Daryl Gill
by
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2 Answers

6 votes
whats the equation and i can help

User Masudur Rahman
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8.2k points
5 votes
A= hb÷2
21=(x*(x+1))÷2
Just try all the choices out to get a total of 21.
=(3*(3+1))÷2
=(3*4)÷2
=12÷2 =6≠21

=(6*(6+1))÷2
=(6*7)÷2
=42÷2 =21
The answer is B. 6
User Daniel Stanca
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8.5k points
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