Answer:
81 hours
Step-by-step explanation:
Let x be the time are needed
45:5 = x:9
5x = 45×9
5x = 405
x = 81
Answer:
9 thousandths
Step-by-step explanation:
3 is tenths
5 is hundredths
9 is thousandths
3b+2(b-1) = 8
3b+2b-2 = 8
5b = 8+2
5b = 10
b = 2
Answer:1/25
Step-by-step explanation: do 5 to the second power which will get all combinations then do 1 as the numerator over the denominator which is the number of combinations.
Answer:
x = 19
Step-by-step explanation:
To find the value of x, you set the equations as equal to each other:

Then you simplify:
