Answer:
(8, - 5 )
Step-by-step explanation:
Given the 2 equations
3x + 4y = 4 → (1)
- x - 3y = 7 → (2)
Multiplying (2) by 3 and adding to (1) will eliminate the x- term.
- 3x - 9y = 21 → (3)
Add (1) and (3) term by term to eliminate x, that is
0 - 5y = 25
- 5y = 25 ( divide both sides by - 5 )
y = - 5
Substitute y = - 5 into either of the 2 equations and solve for x
Substituting into (1)
3x + 4(- 5) = 4
3x - 20 = 4 ( add 20 to both sides )
3x = 24 ( divide both sides by 3 )
x = 8
solution is (8, - 5 )
Answer:
7.33 mps
Step-by-step explanation:
1'st step: divide 132m divided by 18s= 7.33 mps
Answer:
Is seven times the difference of a number and 4 no more than 10?
The difference in the elevation between Mt.Everest and the Dead Sea is 29513 feet
<h3><u>Solution:</u></h3>
Given that,
Elevation of Mt.Everest = 29028 feet
Elevation of the Dead Sea = -485 feet
To find: difference in the elevation between Mt.Everest and the Dead Sea
Therefore,
Difference = Elevation of Mt.Everest - Elevation of the Dead Sea
Substituting the given values, we get
Difference = 29028 - ( - 485)
Difference = 29028 + 485 = 29513
Thus the difference in the elevation between Mt.Everest and the Dead Sea is 29513 feet
Answer:
y = - 
x
Step-by-step explanation:
Given that y varies directly with x then the equation relating them is
y = kx ← k is the constant of variation
To find k use the condition x = 24, y = - 6
- 6 = 24k ( divide both sides by 24 )
= k , that is
k = -
y = - x ← equation of variation
