algebra
2x+8=16
x=4
Amy found a silver coin with a radius of 1 centimetre. What is the coin's area?
3.14 square centimetres
you're so lucky take 1000 points
noice
(–4) × (–6) =
24
10% of 320
10×y+6 =46
y=4
The radius of a circle is 9 kilometres. What is the circle's area?
254.34 square kilometres
5x + 4 = 31+ 2x
x=9
12 × (–10) =
-120
1% of 5300
11×y-6 =104
y=10
The diameter of a circle is 4 metres. What is the circle's circumference?
12.56 metres
change your point with the other team
good
12 × (–10) =
-55
1% of 1200
12
102 +y×8 =164
y=8
The radius of a circle is 4 centimetres. What is the circle's area?
50.24
2( x +1) + 3x = 37
x=7
(–13) × 8 =
–104
Taber Hardware kept an inventory of 796 410 lawnmowers in the past. With a change in management, the hardware store now keeps an inventory of 50% fewer lawnmowers. How many lawnmowers is that?
398 205 lawnmowers
14×y+15 =57
y=3
The radius of a circle is 7 metres. What is the circle's area?
153.86 square metres
-8x + 4 = -26x -1
x= -1/6
(-82)+26=
-56
Out of a salary of $4500, I kept 1/3 as savings. Out of the remaining money, I spend 50 % on food and 20 % on house rent. How much do I spend on food and house rent?
Food: $1500; house rent: $600 and on both: $2100