Answer:
0.5
Step-by-step explanation:
0.42 x = 0.21
x=0.5
Answer:
$90
Step-by-step explanation:
The total of all the items is $270. You are lucky that this is a multiple. Solve it like you were dividing 27 by 9, just add a 0. Good luck! - Justin <3
Every 56 seconds, the radioactive substance is divided in half.
224 / 56 = 4
We need to cut the substance in half 4 times.
896 / 2 = 448
448 / 2 = 224
224 / 2 = 112
112 / 2 = 56
After 224 seconds, there will be 56 grams of the radioactive substance left over
Answer:
To find the hypotenuse you need to use the Pythagorean Theorem which is
a^2+b^2=c^2
Where a and b are your two sides and c is your diagonal line
So you want to plug the numbers in for the right variables
5^2+12^2=c^2
We want to find what c equals so we are first gonna simplify
25+144=c^2
we take 5^2=25, and 12^2=144, then we add them together 25+144=169
169=c^2 now you want to take 169 and square root it because the opposite of squaring is taking it by the root square
The square root of 169=13
Your hypotenuse is 13
Hope this helps ;)
Answer: B) -5
Step-by-step explanation: all you do is subtract 12 from each side and you will get -5
