Algebra
x+7=19
x=12
2a+b+a
3a+b
If the length scale is 1:2, what is the area scale?
1:4
A square has a 5cm side. What is the area?
25cm2
50 procent av 500
250
x/2+5=2
x=-6
4a+b+c+a-2b
5a-b+c
one line is 5cm an d the other is 15cm. What is the length scale?
1:3
A rectangle has one side that is 2mm and one that is 6mm. What is the area?
12mm2
30 procent of 300
90
x2-13=23
x=6
a2-b+3a+5b
a2+3a+4b
If the length scale is 1:2, what is the volume scale?
1:8
A circle has a diaeter of 4m. What is the area?
12,56m2
how much procent is 50 of 1000
5%
x=8
ab+a+3b+2ab
3ab+a+3b
If the area scale is 1:16, what is the volume scale?
1:64
A cube has a sides: 5cm, 2cm and 6cm. What is the volume?
60cm3
70 procent av 630
441
x3+2(5+2)= 41
x=3
2ab2-2a+b+6a-ab+ab2-3b
3ab2-ab+4a-2b
A square has the side of 4dm. Another square has the side of 8cm. What is the area scale?
1:4
A cylinder has the radius of 3dm and is 7dm long. What is the volume?
197,82dm3
räntan gick upp med 2% sedan ner med 3% och sedan upp med 13% om räntan nu är 45kr vad var den innan?
40,2 kr