Step-by-step explanation:
x = a + 7
y = b-a
To prove
x + y = b + 7.
- x+y= (a+7) + (b-a)
=a+7+b-a
=a-a+7+b
=0 + 7+b
= b+7
Proved ✅
The top corner is 180-78=102°
Sum of the corners should be 180°, so
39+102+5z+4=180 => 5z = 180-145 => z=35/5=7°
my previous answer of 29 was indeed wrong!!!
sorry for that!!
Answer:
D, E
Step-by-step explanation:
A fraction can also be called a ration so it is in fact a rational number as well as a real number. When you get to imaginary numbers, you'll scream, Trust me.
Answer:
Step-by-step explanation:
Elimination method:
Add these equations to eliminate x:
Then solve for y:
Write down an original equation:
Substitute 4 for y in :
{ and } ⇒
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<em>hope this helps...</em>
45 + 46 + 47 = 138
Hope this helps!