Answer:
(7, - 7 )
Step-by-step explanation:
- 4x + y = - 35 → (1)
- 2x - y = - 7 → (2)
adding the 2 equations term by term will eliminate the y- term
(- 4x - 2x) + (y - y) = - 35 - 7
- 6x + 0 = - 42
- 6x = - 42 ( divide both sides by - 6 )
x = 7
substitute x = 7 into either of the 2 equations and solve for y
substituting into (1)
- 4(7) + y = - 35
- 28 + y = - 35 ( add 28 to both sides )
y = - 7
solution is (7, - 7 )
Answer:
64=16(x)
x=4
Step-by-step explanation:
Answer:
Step-by-step explanation:
The formula for determining the area of a rectangular playground is expressed as
Area = length × width
The rectangular playground is 40 meters by 10 meters. This means that the area of the playground would be
Area = 40 × 10 = 400 m²
Each bag of the wooden Chips to be used to cover the playground covers 200 sq meters. The number of bags needed would be
400/200 = 2 bags
Each bag costs $30. Therefore, the total cost for this project would be
2 × 30 = $60
Answer:
The line passing through points (1,4) and (4,3).
The line passing through points (1,-4) and (4,-5).
Step-by-step explanation:
Since the equation is y=3x+1
If it was perpendicular, it means the slope would be the negative reciprocal.
So the slope would be -1/3
9-8/6-3=1/3 (not negative) <u>No</u>
3-4/4-1=-1/3 <u>Yes</u>
-5+4/4-1=-1/3 <u>Yes</u>
6-3/5-4= 3/1 <u>No</u>
