I got -0.75. But is that a 3 and 1/2 or just 3?
Answer is -28.37
Step-by-step explanation:
from the numerator cos 2a×cos 3a - cos 2a×cos7a= cos6a^2 -cos 14a^2
= -cos8a^2 for the numerator
from the denominator;
sin4a×sin3a-sin2a×sin5a= sin12a^2 -sin10a^2
= sin2a^2
therefore, combining the equation it gives; -cos8a^2/sin2a^2
a^2 will divide each other,
= -cos8/sin2.
from the calculator,
= - 0.9903/0.0349
= -28.37
The independent variable is the dollar and the dependent variable is the packages of pens
8 + 12y becuase you times what is outside to the inside! Pay more attention to class, I am in Elemtery school! And I know this! Well you should know by now, I was nicknamed Algebra Queen in Maths! Lol
In this modern space age in which we live, we'll need to be careful.
2 kilograms weighs 4.409 pounds on Earth. If that much
costs $3.20, then the cost for 4 pounds is
(4 / 4.09) x (3.20) = $2.90 .
But what if you grow up to live or work on the Moon ?
2 kilograms weighs only 0.73 pounds on the Moon. If that much
costs $3.20, then the cost for 4 pounds up there is
(4 / 0.73) x (3.20) = $17.54 .
The thing to remember is that if you make frequent trips between
the Earth and the Moon, make sure you buy stuff by mass, not by
weight. The weight changes when you take it somewhere else,
and you don't want to get cheated.