Answer:
X=9 or x=-9
Step-by-step explanation:
X^2=81
Can be written as
x^2-81=0
Factorize by the property:
a^2-b^2=(a-b)(a+b)
So the expression becomes:
(x-9)(x+9)=0
Therefore, either x-9=0or x+9=0
Then the solutions are x=9 or x=-9
If you turn the ratio 1:3 into a fraction it would be 1 over 3 I hope this helps
9514 1404 393
Answer:
Step-by-step explanation:
From your knowledge of multiplication tables, you know ...
48 = 6·8 = 3·2·2·2·2 = 3·2^4 . . . . a = 4
56 = 7·8 = 7·2·2·2 = 7·2^3 . . . . . . b = 3
Answer:
2. 8 * 3 - 10 = 14
3. 9 * 2 - 10 = 0
4. 5 - 15 = -10
5. 0.5 * 40 = 20
Part 3.
1. 0.25x + 30.00= 59.50
You have 118 text messages
2. 21.50x = 129
You can buy 6 pizza pies with your money
Hope these are right!!!!
