Answer:
its is 38.6
Step-by-step explanation:
I think you count the squares in the middle or radius ?
Lila did it correctly. The answer is 324
Following PEMDAS, we first focus on the parenthesis. So we simplify 9-3 to get 6
So we go from
18*4^2+(9-3)^2
to
18*4^2+6^2
The next step is applying exponents. In this case, squaring the terms, so we go from
18*4^2+6^2
to
18*16+36
Next is multiplying
18*16+36
turns into
288+36
Finally, add up 288 and 36 to get 288+36 = 324
That confirms that Lila is correct
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The error that Rob made is that he computed 18*4^2+9^2-3^2 but it is NOT correct. Saying (x-y)^2 = x^2-y^2 isn't a true equation for all x and y. Again you have to simplify what is in the parenthesis first, and then you can square it. Or you must use the FOIL rule to expand out (9-3)^2
Answer:
Cat = 6kg
Dog = 18kg
Step-by-step explanation:
Total mass combine = 24 g
dog = 3 x c
cat = c
the cat is 6kg and the dog is 18kg
Answer:
use proportions??
Step-by-step explanation:
i
d
k
h
o
w
t
o
do
this i am only in 5th grade yikes
