Answer:
Expand the 21(2-x)=42-21x
then you add 12 x with 42-21x
making it 42-9x=44
hence,
-9x= 2
9x= -2
x= - 2/9
hope this helps. :)
Answer:
16 days
Step-by-step explanation:
24 men works 8 hours a day to complete a work in 15 days. While 20 men works at 9 hours per day to complete the same work in x days. We can find the number of days it took the 20 men by using the expression below:
24 men * 8 hours/day * 15 days = 20 men * 9 hours/day * x days
Therefore it took 20 men working 9 hours/day, 16 days to complete the same work
Answer:
G) y=3x+1
Step-by-step explanation:
1 would equal b = y-intercept
-3 is the slope = m
y-intercept form is y=mx+b
plug it in
y=-3x+1
Answer:
1.5
Step-by-step explanation:
Answer:
B) 9.2
Step-by-step explanation:
To find an average, you have to combine all of your numbers and then divide by how many there are.
So first, combine the values.
9.7 + 8.6 + 9.3 = 27.6
Now, divide by how many numbers you had, which is 3.
27.6 ÷ 3 = 9.2