Two negative = one positive
-9 - (-9) = -9 + 9 = 0
your answer is 0
hope this helps
Answer:
-2
Step-by-step explanation:
1-(6-3)
<em>multiply the negative into the bracket so it becomes</em>
= 1-6+3
= -2
Answer:
20 children.
Step-by-step explanation:
We can solve this using an equation or simple mental math:
The equation: x=children x+20=adults
x + (x+20) = 60
2x + 20 = 60
2x = 40
x = 20
Mental Math: 40 plus 20 is 60 and 40 is 20 more than 20 so there are 40 adults and 20 children.
Answer: The whole journey is 3,250km.
Step-by-step explanation:
20% = 650km
20 * 5 = 100%
650 * 5 = 3,250km
Answer:
Step-by-step explanation:
Left triangle: it has two congruent legs because has an angle of 45 degrees
AB =
cm
the triangle on the the right is half on an equilateral one
BC = 12 cm
CH = 6√3 cm
AC= (6 + 6√3) cm
2p = 6 + 6√3 + 12 + 6√2 = 18 + 6√3 + 6√2 = 6(3 + √3 + √2) cm
Area = [6(1+√3) * 6]/2 = 18(1+√3) cm^2