The money is a lot so it would be c
70.6179 and something something i think but am more than happy to answer
The formula for solving a rhombus is A = P*Q/2
5.5×4 =22
22÷2 = 11
Awnswer: 11 cm²
Answer:
x = 10
Step-by-step explanation:
3x - 9 = 21
add 9 on both sides:
⇒ 3x - 9 + 9 = 21 + 9
⇒ 3x = 30
divide 3 on both sides:
⇒ 
⇒ x = 10
to check answer, substitute x by 10 on the original equation:
⇒ 3x - 9 = 21
⇒ 3 x 10 - 9 = 21
⇒30 - 9 = 21
⇒ 21 = 21