Area of rectangle is 168
Step-by-step explanation:
Given,
Base = 14mm
Perimeter = 52mm
We will find length first to calculate area of rectangle.
Let l be the length of rectangle.
As we know,
Perimeter = 2(length + base)
52=2(l+14)
Now,
Area of rectangle= Length * Base
Area of rectangle is 168
Keywords: Area, Rectangles
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Answer:
8/15
Step-by-step explanation:
flip the 3/4 into 4/3 then multiply
2/5×4/3=8/15
<span>7x-4y=-7
5x+y=22
multiply 4 on the 2nd equation
</span>20x+ 4y=88
now you have
7x -4y = -7
20x + 4y = 88
--------------------add
27x = 81
x = 3
7x-4y=-7
7(3)-4y=-7
-4y = -28
y = 7
answer (3, 7) is the solution
110/154 = x/126
154x/13860
x = 13860 /154 = 90
90 milligrams of medicine A