360 is the answer for sure
Answer: # 4.) 9.4
#5.) 10.2 cm
#6.) 5 inches .
Step-by-step explanation: Assuming that a right triangle is expected, use the <u><em>Pythagorean Theorem</em></u> to calculate the third side: a² + b² = c²
Then take the square root of 89. A calculator is handy for most of these!
√89 = 9.433981 . Round to 9.4
√104 = 10.1980 Round to 10.2 <u>Remember to include the units, cm in the answer.</u>
<u>Memorize this one:</u>
<u>Given side lengths of 3 & 4, the hypotenuse is 5!</u>
3² + 4² = 5² Called a "Pythagorean Triple"
9 + 16 = 25
The square on the hypotenuse is a perfect square of 5
No calculator necessary, and you are likely to see this ratio in other questions.
Answer:
21
Step-by-step explanation:
Answer:
After 80 years 432 pounds of radioactive element will be remaining.
Step-by-step explanation:
A function models the amount of a radioactive material.
Here x = number of years taken for decay.
If pound and pound, then we have to calculate the time for decay.
Take log on both the sides of the equation
-0.0077x = ln(0.54)
-0.0077x = -0.616186
x =
x = 80.02 years
Therefore, After 80 years 432 pounds of radioactive element will be remaining.