Answer:
258
Step-by-step explanation:
Check the tenth place. It is 4 which is < 5. So, ignore and write the whole number as it is
So, 258.42 = 258
Answer:
Remember to add "$" before the number.
Answer: (x+1)(3x+2) , i only got the answer for the first question, sorry!
Step-by-step explanation:
- factorise using AC method
AC= 3 x 2 = 6
find 2 numbers that add to give 5 and multiply to give 6 (3 and 2)
- put them as x in the equation to replace 5x
3x^2 + 2x + 3x + 2
- split the equation in half and expand each side
3x^2+2x | 3x+2
x(3x+2)+1(3x+2)
- put the numbers outside the brackets into a separate bracket
= (x+1)(3x+2)
Δ perimeter of swimming area:
- total length measure of all sides
- 200√3 + 200√6 + 400 + 200
- ( 200√3 + 200√6 + 600 ) m
Δ area of roped off section:
