Answer:
107 square millimeters
Step-by-step explanation:
You can make this problem easier by splitting this into pieces you already know how to solve. So, you can draw a line down the middle to get 2 rectangles whose formula are Length X Width. Now, use the side lengths 5x7=35 and 8x9=72.
Add the 2 area of rectangles together to get 107 which is your total area.
C, square root 3 over 2, because the angles are complementary
Generally, you are told to approach these by "clearing fractions". That is, you generally multiply the equations by the least common denominator so all fractions and mixed numbers become integers.
Alternatively, you can simply do the arithmetic using the numbers given. You learned a long time ago how to add, subtract, multiply, and divide mixed numbers and fractions. Do these operations as necessary to solve the equations.
Answer:
B
Step-by-step explanation:
given
A = 
(
+ 
)h
multiply both sides by 2 to eliminate the fraction
2A = ( + )h
divide both sides by the multiplier h
= +
Subtract from both sides
- = , that is
= -
