M and N are equilateral triangles. The scale factor of M to N is 8 : 4.1 and the area of triangle M is 320 square inche. find th
2 answers:
Answer:
84.05 square inches
Step-by-step explanation:
Given;
Area of M = 320 square inches
Scale factor of M to N = 8 : 4.1
Since M and N are equilateral, it means all 3 sides in triangle M are equal and all 3 sides in triangle N are equal
To find the area of triangle N, we have:
= 84.05 square inches
Therefore area of triangle N =
84.05 square inches
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Answer:
x =4 ,y =4 and z =0 is the solution.
Step-by-step explanation:
We shall solve the equations using elimination method
In equation 2 and 3 we can see that coefficient of z in both equations are same with opposite sides , adding equations (2) and (3)
3y+5z = 12
y -5z = 4 adding the equations
___________
4y = 16
dividing both sides by 4
y =
y = 4
Plugging the value of y in equation 2 or equation 3 ,we get
3(4) +5z = 12
12+5z = 12
5z = 12-12 or 5z =0 gives z =0
plugging y =4 and z =0 in equation 1
2x+3(4)+ 0 = 20
2x+12 = 20
2x =20-12
2x = 8
x = 8 divided by 2 gives
x =4
therefore solution of the system is given by
x=4 , y =4 and z =0
Answer:
Y-3 = 2(x+1)
open the brackets
Y-3 = 2x+2
Y = 2x+5..... this is the answer when solving for Y
if were solving for x:
Y-3 = 2x+5
Y-8 = 2x