An ordered pair tells you how many units left and right you move (the x
value) and how many units up and down you move (the y value) from the
origin (where the x & y lines meet in the middle). An ordered pair
is in the form of (x, y). Positive x values move right and negative x
values move left. Positive y values move up and negative y values move
down.
Answer:
a) x=105/3 = 35 b) x=6. c) x=90
Step-by-step explanation:
A) 3x-5=100. To solve this we first add 5 to both sides and we get 3x=105. Then we divide both sides by 3 to find x. We then get x = 105/3 which simplifies to 35. To double check we can put 35 back into the equation and we get 3(35)-5=100 and we get 105-5=100. 100=100 Check
b)6 (x-4) = 12. First we need to divide both sides by 6. then after dividing both sides by 6 we are left with (x-4) = 2. Then we must add both sides by 4 to find x. We will then get x =6. To double check we can put 6 back into the equation and we get 6 (6-4) = 12 and we get 6(2) = 12. 12=12 check
c) 1/3x - 10 = 20. First we need to add 10 to both sides and we end up with 1/3x = 30. Then you can simplify this two ways. Either multiply both sides by 3 or divide both sides by 1/3, either way you will get the same answer. This will leave you with x = 90. To double check we can put 90 back into the equation and we get 1/3(90) - 10 = 20 and we get 30-10 = 20. 20=20 check
Hope you could understand.
If you have any query, feel free to ask.
Answer:
C/d = pi
Step-by-step explanation:
The circumference is given by
C = 2* pi *r
C = 2* pi *16
C = 32 pi
The diameter is 2 times the radius
d = 2*16 = 32
C = pi *d
Divide each side by d
C/d = pi *d/d
C/d = pi
18(2+x) because 18*2=36 and 18*x=18x
