Answer:
3x-1
Step-by-step explanation:
Answer:
4
Step-by-step explanation:
If each person has 2 eggs, you'd need 48, and since a dozen is 12, 12*4=48.
You would divide it into shapes that you already know, like squares, rectangles and triangles. Find the area of each shape and add them together
B. This is not a correct method because it would be 8^4, not 8 x 4
Answer:11
Step-by-step explanation:
Boys : girls=7:1
Sum of ratio=7+1=8
Let them number of girls be y
Then they number of boys=y+66
Total number of pupils=y+y+66
Total number of pupils=2y+66
Number of girls=(girls ratio)/(sum of ratio) x (total number of pupils)
y=1/8 x (2y+66)
Cross multiply
y x 8=2y + 66
8y=2y + 66
Collect like terms
8y-2y=66
6y=66
Divide both sides by 6
6y/6=66/6
y=11
The number of girls is 11