-6/7
Negative six over seven
Answer:
A.T.Q
first we need to open the bracket
,when we open breaket the sign in the bracket will change
so the question is
- g - 4 + 2g + 6
now, we take like terms together
- g + 2g - 4 + 6
g + 2 is the answer by solving
Answer:
Distance = 54 miles (Approx)
Step-by-step explanation:
Given:
Co-ordinate of two point = (0.5,135) and (2,81)
Find:
Distance
Computation:
Distance = √(x1-x2)²+(y1-y2)²
Distance = √(2-0.5)²+(81-135)²
Distance = √2.25 + 2916
Distance = 54 miles (Approx)
The answer is never, that is, on a 2 dimensional plane. You can perform an experiment to see why it is the case. On curved surfaces though, two lines can intersect one another more than once. For instance, on the surface of planet Earth, two lines can intersect one another, both at the Earth's North Pole and South Pole.
Let's make,
mechanic #1's rate = x
mechanic #2's rate = y
* Their rate is dollars per hour ($/hr)
mechanic #1 worked for 20 hours (hr × $/hr = $)
20x = money earned by mech#1
and mechanic #2 worked for 5 hours
5y = money earned by mech#2
together they charged a total of $1150. So the amount of money earned by both mechanics.
20x + 5y = 1150
the sum of the two rates was $95 per hour.
x + y = 95
which means
x = 95 - y
plug (95 - y) in for "x" in the other equation to get everything in terms of one variable.
20(95 - y) + 5y = 1150
solve for y
1900 - 20y + 5y = 1150
1900 - 15y = 1150
-15y = 1150 - 1900
-15y = -750
y = -750/-15
y = 50 $/hr
Now use this to solve for x
x + y = 95
x + 50 = 95
x = 95 - 50
x = 45 $/hr
mech#1 charged 45$/hr
mech #2 charged 50$/hr
