Answer:
First mechanic worked for 10 hours and second mechanic worked for 15 hours.
Step-by-step explanation:
Let first mechanic worked for X hours and second mechanic worked for Y hours .
Now, according to the question , they worked for a total of 25 hours .
Thus ,
X + Y = 25.
Y = 25 - X -(1)
Also, first mechanic is charging $ 95 per hour and second mechanic is charging $115 per hour .
Thus, total money charged by them will be 95X + 115Y .
Which is given to be $2675 in the question.
Thus 95X + 115Y = 2675. -(2)
Putting equation 1 in equation 2 we get ,
95X + 2875 - 115X = 2675
20X = 200
X = 10 hours.
Thus , Y = 25 - X = 15 hours.
Thus first mechanic worked for 10 hours and second mechanic worked for 15 hours.
Step-by-step explanation:
here's the answer to your question
Answer:
=−21x2+5x+4
Step-by-step explanation:
Let's simplify step-by-step.
4−3(7x2)+5x
=4+−21x2+5x
Answer:
r = 2
Step-by-step explanation:
use slope formula to find r
(r, 3) (5, 9) m = 2
y₂ - y₁ / x₂ - x₁ = m (Formula)
9 - 3 / 5 - r = 2 (use the points given then subtract 9 - 3)
6 / (5 - r) = 2 / 1 [Cross Multiply--2( 5- r ) = 6 x 1 ]
10 - 2r = 6 (solve equation)
-2r = -4
r = 2
9514 1404 393
Answer:
SSS
Step-by-step explanation:
Two sides are marked congruent and the third side is shared. It is congruent to itself.
Hence, all three sides are congruent, and you can invoke the SSS congruence postulate to say the triangles are congruent.
