Answer:
The mechanic who worked 5 hours charged $115 per hour, the one who worked 15 hours charged $120 per hour.
Step-by-step explanation:
x = rate of mechanic who worked 5 hours
y = rate of mechanic who worked 15 hours
Then
x + y = 235
5x + 15y = 2375
Just solve these 2 equations above for x and y.
x + y = 235 ⇒ x = 235 - y
Substitute into second equation to find y.
5(235 - y) + 15y = 2375
1175 - 5y + 15y = 2375
10y = 1200
y = 1200/10 = 120
x = 235 - y = 235 - 120 = 115
Answer:
The value is 
Step-by-step explanation:
We need to find value of 
when 
We have
The area of a triangle with base 'b' and height 'h' is given by the formula:
It is given that the area of a triangle is 
.
It is given that the base of the triangle is 5 times the height.
So, 
We have to determine the height of the triangle.
Since, 
So, 
So, h = 24 cm
Therefore, the height of the triangle is 24 cm.
Option 2 is the correct answer.
Sin A = 9/41 because opposite to angle A is 9 and the hypotenuse is 41. sine is opposite over hypotenuse.
-1/3b = 9.....multiply both sides by -3, cancelling out the -1/3 on the left side
b = 9 * -3
b = -27
