hi
You will only progress by trying yourself.
so I do the first, you do the rest.
You have to remplace x by 3
so first expression is : x²-4x
by remplacing "x" by it's value (3) we have :
(3)² -4(3) = 9 -12 = -3
Have a try for the rest and ask in comment if you dont understand.
Answer:
181.5 hours
Step-by-step explanation:
Here is the complete question: For 22 days I worked 8 and 1/4 hours each day. How many hours did I work for this month?
Given: Each day, working hour is
Working day in a month= 22 days.
First converting working hours, from fraction to decimal.
=
∴ working hours= 8.25 hours.
Now, calculating the number hours did he work in this month.
We know, he worked for 22 days in this month.
Number of hours in this month=
Hence, 181.5 hours did he work for this month.
5a+2b-3a+4
= (5a-3a)+2b+4
= 2a + 2b + 4
Answered by Gauthmath must click thanks and mark brainliest
Answer:
Step-by-step explanation:
Answer:
x = 144
Step-by-step explanation:
y α x
we introduce a constant 'k' when changing from α to =.
i.e y = kx
y = ⅓ when x = 12
Meaning, ⅓ = k * 12
⅓ = 12k
k = ⅓ ÷ 12
k = 1/36
If y = 4, x = ?
using the equation y = kx
4 = (1/36)x
x = 4 ÷ (1/36)
x = 4 * 36
x = 144