The expression would be this in my opinion 5c+4
9-2x+35
first you want to get rid of the number. so you subtract 9 on both sides. Think of this as a balance scale, what you do on one side must be done on the other.
9-2x+35
-9 -9
-2x= 26
you always want to do the opposite, so since this was positive 9 you subtract so the 9 is gone.
-2x=26
/-2 /-2
you divide each side by -2 and you get
x=-13
since a negative divided by a positive is a negative
Answer:
(-5,3)
Step-by-step explanation:
-40+8y=-16
8y=24
y=3
Answer:
I have no idea sorry for wasting your time
Step-by-step explanation:
Answer:
YES
Step-by-step explanation:
Explanation:
If this is a right triangle we can then substitute the sides of the triangle (12 and 35) and the hypotenuse (37) into the Pythagoras Theorem and the two sides of the equation will be equal. If this is not a right triangle the two sides of the equation will not be equal.
The Pythagoras Theorem is
a
2
+
b
2
=
c
2
Substituting we get:
12
2
+
35
2
=
37
2
12
⋅
12
+
35
⋅
35
=
37
⋅
37
144
+
1225
=
1369
1369
=
1369
Because these are equal this is a right triangle.
