Answer:
x = 2
Step-by-step explanation:
Given
3x + 8x - 2 = 20 , that is
11x - 2 = 20 ( add 2 to both sides )
11x = 22 ( divide both sides by 11 )
x = 2
Answer:
Step-by-step explanation:
Comment
A rational number is one that can be expressed as x/y. The first statement is false. All whole numbers are rational. They can always be expressed as x/1
Some rational numbers are not whole numbers. That's true. 4/7 is rational but not whole.
Some irrational numbers are not integers. I'm tempted to say this is true.
pi is irrational and it certainly is not an integer.
Answer
false
true
true.
Jane has 20 pounds and Charlotte has 16 pounds
Let j = amount Jane has and c = amount Charlotte has
j - 2 = c + 2 if Jane gives Charlotte 2 pounds
j + 4 = 2(c - 4) if Charlotte gives Jane 4 pounds
j + 4 = 2c - 8
Subtract equation 1 from equation 3
6 = c - 10
c = 16
j = c + 4 = 20
6300kg = 6300000g 6300000g = 6.3 x 10^6
