3 years ago

If the area of a wall is 81, what is the length of the wall?

Mathematics

1 answer:

viktelen [127]3 years ago

6 0

Answer:

Step-by-step explanation:

Find the square root of 81: $\sqrt{81} = 9$

I hope this helps!

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George and Carmen went on a bicycle trip. they took a bus to their starting point, and then biked the rest. They traveled 3oo ki

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Answer:

George and Carmen traveled 185 kilometers by bike and 115 kilometers by bus

Step-by-step explanation:

The question is

Find how many kilometers they traveled by bike

Let

x ----> kilometers traveled by bike

y ----> kilometers traveled by bus

we know that

They traveled 300 kilometers in total

$x+y=300$ ----> equation A

They biked 70 kilometers more than they were bus

$x=y+70$ ----> equation B

substitute equation B in equation A

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solve for y

$2y+70=300\\2y=300-70\\2y=230\\y=115$

Find the value of x

$x=115+70=185$

therefore

George and Carmen traveled 185 kilometers by bike and 115 kilometers by bus

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