Answer:
Step-by-step explanation:
<u>Given</u>
- x : y = 2 : 5, y is 80% of z
<u>Rearranging the ratios:</u>
- x/y = 2/5 ⇒ x/y = 0.4 ⇒ y = x/0.4 ⇒ y = 2.5x
- y is 80% of z ⇒ y = 0.8z
<u>Comparing the values of y:</u>
- 2.5x = 0.8z
- x/z = 0.8/2.5
- x/z = 0.32
- x/z = 32/100
- x/z = 8/25
- x : z = 8 : 25
The Tama monorail runs for 18 hours every day.
There are g(f(x)) and f(g(x))
do them then evaluate
lets say
f(x)=3x
g(x)=9x^3-4
g(f(x))=9(3x)^3-4=243x^3-4
f(g(x))=3(9x^3-4)=27x^3-12
we can see that g(f(x)) with yield a higher value for x=10
Area of triangle = 1/2(4)(4) = 16/2 = 8
if Area of square then A = 4 x 4 = 16
so answer
B. it's one half the area of square of side length 4 units
