ASTRONOMY- an object's weight on mars can be found by multiplying 0.38 by the object's weight on mars.

a) an object weighs p pounds,on earth. write an expression for its weight on mars. my answer is 0.38p, is it correct?
b)dana weights 120 pounds, and her bicycle weighs 44 pounds. how much would dana and her bicycle together weigh on mars? my answer is 6232. is it correct?

I don't understand why we need algebra in our lives.. like x+y=xy WFT? O.o

The answer is indeed 62.32 you had the decimal in the wrong place

Your first sentence is wrong. You must have meant to write

"An object's weight on Mars can be found by multiplying 0.38 by the object's weight on Earth."

a) is correct
b) is wrong. It should be 164*0.38 = 62.32
You omitted a crucial decimal point.

a) Yes, you are correct. To find the weight of an object on Mars, you multiply its weight on Earth by the Martian gravity, which is approximately 0.38. So, if an object weighs p pounds on Earth, then its weight on Mars can be expressed as 0.38p. Well done!

b) To find the combined weight of Dana and her bicycle, you need to calculate the weight of each separately and then add them together. Given that Dana weighs 120 pounds and her bicycle weighs 44 pounds, you can calculate their combined weight on Mars using the expression 0.38 * (120 + 44).

Let's break down the calculation:
Dana's weight on Mars = 0.38 * 120
Bicycle's weight on Mars = 0.38 * 44

And finally, their combined weight on Mars:
Dana and bicycle's weight on Mars = Dana's weight on Mars + Bicycle's weight on Mars

Plugging in the values:
Dana and bicycle's weight on Mars = (0.38 * 120) + (0.38 * 44)

Now, let's solve it:
Dana and bicycle's weight on Mars = 45.6 + 16.72 = 62.32

So, the correct answer is that Dana and her bicycle together would weigh 62.32 pounds on Mars. Your answer of 6232 is incorrect because you forgot to account for the decimal point when multiplying by 0.38.