Answer:
x = -0.357143
Step-by-step explanation:
Step 1: Write equation
18 - 7x = 20.5
Step 2: Solve for <em>x</em>
<u>Subtract 18 on both sides:</u> -7x = 2.5
<u>Divide both sides by -7:</u> x = -0.357143
Answer:
The number is 60
Step-by-step explanation:
Answer:
Step-by-step explanation:
Break the expression into individual pieces
24 can be written as (4)(6)
x^6 can be written as (x^3)^2
y^9 can be written as (y^4)^2(y)
Notice in the variables the focus on writing to the power of 2.
Square root and power of 2 are essentially inverse operations of each other, so they cancel each other out.
The square root of 4 is 2
The square root of (x^3)^2 is x^3
The square root of (y^4)^2 is y^4
The remaining 6 and y stay underneath the square root.
The final answer is then (2x^3y^4)(square root 6y)
Answer:
3:1 in simplest form
Step-by-step explanation:
Answer:
£2200
Step-by-step explanation:
1 computer = £120 + £100
1 computer = £220
10 computers = £220 x 10
10 computers = £2200