Answer:
The length of the rectangle is 25 km
Step-by-step explanation:
Let
x ----> the length of rectangle
y ----> the width of rectangle
we know that
The perimeter of rectangle is

we have

so

simplify
---- > equation A
---> equation B
substitute equation B in equation A and solve for y





Find the value of x
therefore
The length of the rectangle is 25 km
Y = mx + c
m = 2
y = 2x + c
At (5, 0)
0 = 2(5) + c
c = -10
y = 2x - 10
If I use 7.5 and 13.5 as the bases and 10 as the height, the area is 105
EXPLANATION:
1/2h x sum of bases
1/2(10) x (7.5 + 13.5)
5 x 21
105
ANSWER:
105
Answer:
1. 145
2. 21
3. 42
4. 40
5. 90
6. 120
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The answer is HJ i took the test and got it right :)