I will do the first one only. The second question is done the same way.
Replace every x you see in the function with 2b and do the math.
f(x) = x^2 + 2x + 1
Let x = 2b
f(2b) = (2b)^2 + 2(2b) + 1
f(2b) = 4b^2 + 4b + 1
Did you follow? That's all there is to it.
Answer:
a) 20 years
Step-by-step explanation:
Hina: x
Nora: x + 4
x + x + 4 ≤ 45
2x + 4 ≤ 45
2x ≤ 41
x ≤ 20.5
20 years old and 15 years old would be ≤ 20.5 but the question asked for maximum possible age so 20 years old it is.
Answer:
£650=$1053
£405=$656.1
from the scale we multiply the values of euro by 1.62
Answer:
1) 4 wild cards
2) 51.5 bones, rounded up to 52 bones
3) 72 blue balls.
Step-by-step explanation:
1) For every 18 cards in the game, there is 1 wild card.
For 72 cards in the game, there are 72/18 * 1 = 4 wild cards.
2) For every 4 bones, 1 is in the feet.
For 206 bones, 206/4 * 1 = 51.5 are in the feet. Though, you can't have half a bone, so I'd round it up to 52 bones in the feet.
3) For every 6 + 5 = 11 balls, there are 6 blue and 5 red.
For every 132 balls, there are 132/11 * 6 = 72 blue and 132/11 * 5 = 60 red.
There are 72 blue balls.
We know that
volume of a cuboid=length*width*height
in this problem
we have
volume=(18 cm)³
so
volume=18*18*18 cm³
the dimensions of the cuboid are
length 18 cm
width 18 cm
height 18 cm
18 cm x 18 cm x 18 cm
