Answer:
x= 11
Step-by-step explanation:
2 (x-5) + 7= x + 8
First we can distribute the 2(x-5) which gives us 2x - 10
2x-10 + 7= x + 8
subtract -10 + 7 which is -3
2x - 3= x + 8
Next, subtract the x to the left side and add the 3 to the right side
x= 11!
Answer:
D
Step-by-step explanation:
-3(2m-1)-n
open the bracket
-6m+3-n
rearrange
-6m-n+3
Answer:
y = (N/24)x
Step-by-step explanation:
Let N be the no. of announcements per day (in 24 hours)
N/24 per hour
y = (N/24)x
Answer:
dx/dt = 5√5/2
Step-by-step explanation:
Given:
dx/dt = 25 feet per second
According to Pythagoras theorem:
x² + 90² = y²
We know that x = 30 ft
So,
x² + 90² = y²
30² + 90² = y²
y = 30√10
So,
x² + 90² = y²
By taking differentiate:
2x dx/dt = 2y dy/dt
[x/y][dx/dt] = dy/dt
dx/dt = 5√5/2
