Answer:
-26
Tip for solving related problems: use order of operations
Answer: 5
Step-by-step explanation:
r³=125=
r*r*r=125
so
r=5
Answer: 180
Step-by-step explanation:
Answer:
x=1
Step-by-step explanation:
7x - 20 = 2x - 3(3x + 2)
Distribute
7x -20 = 2x -9x -6
Combine like terms
7x-20 =-7x -6
Add 7x to each side
7x+7x-20 =-7x+7x -6
14x -20 = -6
Add 20 to each side
14x-20+20 =-6+20
14x = 14
Divide by 14
14x/14=14/14
x=1
Gg easy
remember
for
ax^2+bx+c=0
first
minus c from both sides
ax^2+bx=-c
divide both sides by a (disregard if a=1)
take 1/2 of b and square it and add that to both sides
factor perfect square
ok so
x^2-3x=-1
-3/2=-1.5
(-1.5)^2=2.25
add that to both sides
x^2-3x+2.25=2.25-1
factor
(x-1.5)^2=1.25
