Answer:
49.1 cm^2
Step-by-step explanation:
The appropriate area formula is ...
area = (1/2)(side 1)(side 2)(sin(angle between))
= (1/2)(10 cm)(12 cm)·sin(55°) = 60·sin(55°) cm^2
area ≈ 49.1 cm^2
Answer:
Step-by-step explanation:
make two equations
one equation is about the money and one is about counting how many coins
Money equation : .10d + .25q = 5.80
this assigns the value of the dimes at 10 cents and the value of the quarters at 25 cents.
counting equation: d + q = 40
so the answer is C
Answer:

Step-by-step explanation:
If AB = AD, then you have that triangle ABD is an isosceles triangle (it has two equal sides). If it is isosceles, then the angles opposite to angles those equal sides must be equal. Then angle ADB =
. and by the property of all internal angles of a triangle have to add to
, we get that:

Answer: Is (12.-10) I think
Step-by-step explanation:
Answer: - 1023
Step-by-step explanation:
Given
Sequence is 
The following sequence is a geometric series with common ratio 
first term 


