Answer:
72 square units
Step-by-step explanation:
The area is given by the formula ...
A = 1/2ab·sin(C)
A = 1/2(12)(24)sin(30°) = 1/2(12)(24)(1/2) = 72 . . . square units
Answer:
0.247
Step-by-step explanation:
1.
2x + y = 20 (multiply this equation by 5 in order to get rid of y by addition of both equations)
6x - 5y = 12
2.
10x + 5y = 100
6x - 5y = 12
(add both equations to get the below equation)
16x = 112
3. Do simple math:
x = 112/16
x = 7
4. plug in the x (7) into the first equation
2x + y =20
2*7 + y = 20
14 + y = 20
y = 6
(x, y)
answer: (7,6)
Step-by-step explanation:
a) 24.7×52.3=1291.81
On rounding off to 3 significant digits we get
1290
b)
=31.304951
On rounding off to 5 significant figures we get
=31.305
c)
On rounding off to 2 significant figures we get
=4.3
Hence required answers
a)1290
b)31.305
c)4.3
I hope it helped you
Answer:
The answer is $10.50
Step-by-step explanation: