16 because 25% of 20 is 4 so 4 question were choice B. Then, I subtracted 20 by 4 and got 16. I hope that helped! :)
Answer:
sqrt(61)
Step-by-step explanation:
4-(-1) = 5
-3-(-9) = 6
sqrt(5^2+6^2) = sqrt(25+36) = sqrt(61)
Since this is not a rational function (with undetermined values in the denominator), but just a normal expression, we can just substitute t with the value toward which the function is approaching. Since this is a continuous function, it doesn't matter from which side it's approaching 0. In this case, let t=0, then sin(4t)=0, cos(4t)=1, then -2 sin^2(4t)+2tcos(4t)=0.
The person is traveling 30 mph.
The car is traveling 45 mph.
Just mulitply 15 x 3 and 10 x 3.
Let’s break the numbers down.
10 + 5 = 15. So we can break 15 down like how you add 15.
10 x 3 = 30.
5 x 3 = 15.
Let’s add 30 and 15 together.
30 + 15 = 45.
Let’s now multiply 10 and 3.
10 x 3 = 30.
I hope this helped!
Answer:
A mathematical model is a description of a system using mathematical concepts and language. The process of developing a mathematical model is termed mathematical modeling. Mathematical models are used in the natural sciences and engineering disciplines, as well as in non-physical systems such as the social sciences.
