68 divided by 85 multiply by 100
68/85=0.8 x 100= 80%
Clown fish: angel fish 5:4
angle fish: gold fish 4:3
(60): angel fish=5:4
(5)(12)=60
(4)(12)=48 angel fish
(48): gold fish=4:3
(4)(12)=48
(3)(12)=36 gold fish
thanks so much for the points
Answer:
there are fourteen 4-point questions and twenty six 2-point questions.
Step-by-step explanation:
Given : A 40-question test has 108 possible points.
There are m 4-point questions and n 2-point questions.
So , equation for total number of questions in the test :
m + n = 40 | 4n + 2n = 108
Multiplying (i) by 2 , we get
2m + 2n = 80
Subtract (iii) from (ii) , we get
2m = 28
⇒ m = 28/ 2 = 14
Using value of m in (i) , we get
14 + n = 40 ⇒ n = 26
from this we get there are fourteen 4-point questions and twenty six 2-point questions.
hope this helped!
Use the metric relations,
AC*CD=BC^2
=>
5*CD=9^2
solve for CD
CD=9*9/5=16.2
