9(4+6) because you can use distributive property to get the answer
The answer is neither; you only have to substitute the ordered pair on the equation y=7x-2; ordered pair (a,b).Substitution: b=7a-2.
Answer:
6 = −4x + y
−5x − y = 21
Answer: (-3, -6)
2x + y = 20 6x – 5y = 12
Answer:
(7 , 6)
Step-by-step explanation:
Solve the system of equations by substitution.
6 = −4x + y --> y = 4x + 6
−5x − y = 21
Substitute y = 4x + 6 into −5x − y = 21
−5x − (4x + 6) = 21
-5x - 4x - 6 = 21
-9x = 27
x = - 3
y = 4(-3) + 6
y = -12 + 6
y = -6
(-3, -6)
Solve the system by the elimination method.
2x + y = 20
multiply the equation by (-3) ; 2x + y = 20 so
-6x - 3y = - 60
6x – 5y = 12
------------------add
-8y = - 48
y = 6
2x + y = 20
2x + 6 = 20
2x = 14
x = 7
(7 , 6)
The answer is A. because the calculated cost is 4,565.25 and the calculated revenue is 4,767.15. This means that the revenue is greater, so that leaves the owner with a 201.90$ profit.
<em>11 2/5 mm³</em>
- Step-by-step explanation:
<em>Hi there ! </em>
<em />
<em>3 4/5mm³ = (3×5 + 4)/5 = (15 + 4)/5 = 19/5 mm³</em>
<em />
<em>19/5 mm³ ............. 1/3 box</em>
<em>x mm³ .......................1 box</em>
<em>x = 19/5×1 : 1/3</em>
<em>= 19/5 × 3/1</em>
<em>= 19×3/5</em>
<em>= 57/5</em>
<em>= 11 2/5 mm³</em>
<em />
<em>Good luck !</em>