Answer:
990
Step-by-step explanation:
20 goes into 100 5 times.
198 x 5 = 990
Answer:
2 m
Step-by-step explanation:
First we need to calculate the actual area of the garden:
Area = 16 * 8 = 128 m2
If the new area is 240 m2 and we call the width of the pathway 'w', we have that:
New area = (16+2w) * (8+2w) = 240
128 + 48w + 4w^2 = 240
4w^2 + 48w - 112 = 0
w^2 + 12w - 28 = 0
Delta = 12^2 + 4*28 = 256
sqrt(Delta) = 16
w1 = (-12-16)/2 = -14 m (not a valid width)
w2 = (-12+16)/2 = 2 m
Answer: D
Step-by-step explanation: Hope this helps :)
x+y=45
x=y+7
Use substitution...
Plug y+7 into the first equation. You get (y+7)+y=45. Next combine the like terms. 2y+7=45. Subtract 7 from both sides and you get 38. Divide 2 on both sides to get y alone and you get 19. Since there are more cats than dogs, this is the amount of dogs. Add 19+7 since there are 7 more cats than dogs and you get 26 cats. Therefore there is 19 dogs and 26 cats.
Answer:
h=122.5m
Step-by-step explanation:
Note: the negative sign is referred to your address
