X=area of Sahara. y=area of the Gobi Desert. We suggest this system equations: x+y=4000000 x=7y solve by susbstitution method. (7y)+y=4,000,000 8y=4,000,000 y=4,000,000 / 8=500,000
x=7y x=7(500,000)=3,500,000
The area of Sahara=3,500,00 miles². The area of the Gobi Desert=500,000 miles²
To check: Te sum of their areas is : 3,500,000 miles²+500,000 miles²=4,000,000 miles² Te area of sahara (3,500,000 miles²) is 7 times the area of the Gobi Desert (7*500,000 miles²=3,500,000 miles²).
To answer this question, you first need to know what SohCahToa is.
S- opposite over hypotenuse
C- adjacent over hypotenuse
T- opposite over adjacent
In this situation, they have made it easier for you as they have given you the quotient of the opposite and adjacent sides (3.4) . Now in order to find an angle, you take the inverse of your expression. So instead of just Tan, you would plug in Tan^-1. So plug it in:
Factor by grouping is best for this expression. To factor by grouping, group pairs of terms with parenthesis. Then find the GCF in each pair. If the parenthesis match after, the factoring is complete.