Answer:
A) 5927
B) 13
C) 8
D) cannot read expression
Step-by-step explanation:
A) (77^2)-2 = 5927
B) (1+4)*3-2 = 13
C) 2(1+3) = 8
Assume that
a and b = the two legs of the right triangle.
c = the hypotenuse.
The area of the right triangle is 750 yd², therefore
(1/2)*a*b = 750
ab = 1500 (1)
The perimeter is 150yd, therefore
a + b + c = 150 (2)
Let the side fenced with wood be a, at $5/yd. Sides b and c are fenced with steel at $10/y. The total cost is $1200, therefore
5a + 10b + 10c = 1200
or
a + 2b + 2c = 240 (3)
From (2), obtain
c = 150 - a - b (4)
Substitute (4) into (3)
a + 2b + 2(150 - a - b) = 240
-a + 300 = 240
a = 60
From (1), obtain
60b = 1500
b = 25
From (4), obtain
c = 150 - 60 - 25 = 65
Answer:
A. The length of the leg fenced with wood is 60 yd.
B. The length of the leg fenced with steel is 25 yd.
Well since y= kx you should divide 12.6 by 3
Answer:
24 ft²
Step-by-step explanation:
AC = 10-(3+3)= 4
AB = 12- (3+3) = 6
AB×AC = 6×4 = 24 ft²
