<span>From the problem, you can get this equation:
Jane is 2 years older than Sally
J=z+2
David is 4 times older than Jane.
D=4J
</span>Write two equivalent expressions that represent David’s age in terms of Sally’s age, z, and explain how the two expressions relate to one another.<span>Sally is z years old.
From the 2 equation above, you can get:
</span>D=4J
D=4(z+2)
D=4z+8
D-8=4z
(D-8)/4=z
The two equivalent expression would be D=4z+8 and (D-8)/4=z
The expression that more usefull would be D=4z+8 if you want to determine David age.
Since two of the triangles are similar that means they are the same thing :
<A = <L
108 = 108
<C is twice from <M so :
<C is 2x < M is x
as you note down the answer you can draw two triangles and label them according to thier values, you will see that triangle ABC has two things now ;
a = 108 and c = 2x
when you have two measures in a triangle you can find the 3rd one :
suppose that third < of triangle ABC is x ;
108 + 2x + x = 180
108 + 3x = 180
3x = 180 - 108
3x = 72
<u> </u>
<u> x = 24</u><u />
<u>
<m = 24 </u>
further if you want to find C : < c = 2x
< c = 2 ( 24 )
< c = 48
Answer:
-19
Step-by-step explanation:
12x - 6 + 6 = 10x - 40 + 2
12x - 10x = -40 + 2 + 6 -6
2x = -38
x = -38/2 = -19
The two truths are:
x is a negative number (x = -19)
x+5>x (if x is positive, is true; if x is negative, is also true)
The one lie is:
3x > 2x (if x is negative, the expression will be 3x < 2x)
1 1/2 miles is indeed your answer because if 50% of the road is done which was 3/4 of a mile just add another 3/4 of a mile if it’s 50% (50% +50%=100%)
Answer:
Hello,
Step-by-step explanation:
