You need to remember that 100 pence = 1 pound sterling.
Halve both sides: 50 pence = 1/2 pound sterling
200 pence = <span>£2
</span>
50 pence 50 pence
Thus 50 p/ <span>£2 = ------------------ = ------------------ = 1/4
</span>£2 200 pence
50 p is 1/4 of <span>£2.</span>
Given:
Three numbers in an AP, all positive.
Sum is 21.
Sum of squares is 155.
Common difference is positive.
We do not know what x and y stand for. Will just solve for the three numbers in the AP.
Let m=middle number, then since sum=21, m=21/3=7
Let d=common difference.
Sum of squares
(7-d)^2+7^2+(7+d)^2=155
Expand left-hand side
3*7^2-2d^2=155
d^2=(155-147)/2=4
d=+2 or -2
=+2 (common difference is positive)
Therefore the three numbers of the AP are
{7-2,7,7+2}, or
{5,7,9}
Answer:
87 ft
Step-by-step explanation:
hope it's correct
please give me a brainlist
thank you
4(2n - 9) = 10n - 8
8n - 36 = 10n - 8
8n - 8n - 36 = 10n - 8n - 8
-36 = 2n - 8
-36 + 8 = 2n - 8 + 8
-28 = 2n
-28/2 = 2n/2
-14 = n
There aren't any solutions. I recommend using MathPapa algebraic calculator for problems like this. Here's the link: https://www.mathpapa.com/algebra-calculator.html
