Answer:
800 km per hour.
Step-by-step explanation:
4800km/6h = 800kmph
Answer:
3, 8, 14, 30, 58
Step-by-step explanation:
As with all formulas, put the numbers in place of the corresponding variables, and do the arithmetic.

The first 5 terms of the sequence are 3, 8, 14, 30, 58.
Answer:
9
Step-by-step explanation:
Compare your x2 + y2=81 to the following:
x^2 + y^2 = 81
The " ^ " symbol indicates exponentiation.
Now compare x^2 + y^2 = 81 to
x^2 + y^2 = r^2.
This is the standard equation of a circle of radius r centered at the origin, (0,0). You can see for yourself that 81 must equal r^2.
Taking the square root of 81, we get plus or minus 9.
But the radius must be positive, so we reject the -9 and take +9.
The radius is 9.
<h2><u>Expressions</u></h2>
<h3>Expand the expression 4(x - 3)</h3>
To expand an expression, apply distributive property.
<em>(See picture for better understanding)</em>
Wxndy~~
A-b*x is equivalent to |a-b|