Step-by-step explanation:
r=21cm
a=135
perimeter=2r+ar
=2×21+135×21
=42+2835
=2877cm
Answer:
you would spend $153.60
Step-by-step explanation:
you just do $25.60x6
47 X 4 = 188. That is 50 too many legs. 50/2=25. If you take away 25 sheep and add 25 chicken you have the correct number of legs. There are 25 chicken and 22 sheep.
If complementary then sum of the angles = 90
#54
3x + 16 +4x-3 = 90
7x-13=90
7x = 90-13
7x = 77
x = 11
m<A=3x + 16 = 3(11) + 16 = 49
m<B = 4x - 3 = 4(11)-3=41
#55
4x-2+7x+4=90
11x+2=90
11x = 90-2
11x = 88
x = 8
m<A = 4x-2 = 4(8) - 2 = 30
m<B =7x+4 = 7(8) + 4 = 60
Answer:
x = 2
y = 3
Step-by-step explanation:
y = 2x – 1
y - 2x = -1
y = 5x – 7
y - 5x = -7
y - 2x = -1
y - 5x = -7
_________--
3x = 6
x = 6/3
x = 2
y = 2x – 1
y = 2(2) - 1
y = 4 - 1
y = 3