Answer:
0.184
Step-by-step explanation:
There are 38 seniors, of which 7 prefer evening classes.
7/38 ≈ 0.184
Answer:

Step-by-step explanation:

Adding both equations will make it:

Putting x = 10 will make it:

= 3(1000)-40+1
= 3000-39
= 2961
Answer:
12
Step-by-step explanation:
(2x-8+2x+10)/2 = 25
(4x+2) = 2×25
4x+2 = 50
4x = 50-2
4x = 48
x = 48/4
x = 12
Step-by-step explanation:
The given numbers are : 32 , 48 , 140 , 120
First number is 32
Second number is 48
Third number is 140
Fourth number is 120
First number/second number :

Third number/Fouth number :

From equation (1) and (2) we can see that the ratio is not same. Hence, they are not in proportion.
Plug in 20 to W making 20-8, so your answer would be 12 :)