Assume a statement true and then show it must be false.
<span>This is also called 'proof by contradiction'.</span>
Answer:
3m = -3
Step-by-step explanation:
Subtract 2m from both sides of the equation:
-6 = 6m
Divide both sides by 2:
-3 = 3m
Answer:
41
Step-by-step explanation:
Given
(7 + 2
)(7 - 2 ) ← expand factors using FOIL
= 7² - 2 + 2 - (2 )² ← collect like terms
= 49 - 8
= 41
Nansbdjs and uiaishdwueu828
Answer:
10a = 30
Step-by-step explanation:
By using elimination:
4a + 2z = 10
-2(3a + z) = -2(-10)
4a + 2z = 10
6a - 2z = 20
2z and -2z cancel out
10a = 30
a = 3
They are asking for 10a, so 10 (3) = 30.
