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question 1
Add or subtract.
4m2 βˆ’ 10m3 βˆ’ 3m2 + 20m3

A: 11m5

B: m2 + 10m3 *****

C: m4 + 10m6

D: 7m2 βˆ’ 30m3





Question 2: 1 pts
Subtract. (9a3 + 6a2 βˆ’ a) βˆ’ (a3 + 6a βˆ’ 3)

Subtract.
(9a3 + 6a2 βˆ’ a) βˆ’ (a3 + 6a βˆ’ 3)

A: 8a3 βˆ’ 7a

B: 8a3 + 6a2 βˆ’ 7a + 3

C: 9a3 βˆ’ a βˆ’ 3

D: 9a3 + 6a2 + 6a βˆ’ 3 *****





Question 3: 1 pts
Skip to question text.

A company distributes its product by train and by truck. The cost of distributing by train can be modeled as βˆ’0.06x2 + 35x βˆ’ 135, and the cost of distributing by truck can be modeled as βˆ’0.03x2 + 29x βˆ’ 165, where x is the number of tons of product distributed. Write a polynomial that represents the difference between the cost of distributing by train and the cost of distributing by truck.

A: βˆ’0.03x2 + 6x βˆ’ 300

B: βˆ’0.09x2 + 6x βˆ’ 300

C: βˆ’0.03x2 + 6x + 30

D: βˆ’0.03x2 + 64x βˆ’ 300 *****

Respuesta :

calculista
we have that

question 1
Add or subtract.Β 
4m2 βˆ’ 10m3 βˆ’ 3m2 + 20m3
=(4m2-3m2)+(20m3-10m3)
=m2+10m3

the answer is the option
B: m2 + 10m3

Question 2:Β 
Subtract. (9a3 + 6a2 βˆ’ a) βˆ’ (a3 + 6a βˆ’ 3)
=(9a3-a3)+(6a2)+(-a-6a)+(-3)
=8a3+6a2-7a-3

the answer is the option
B: 8a3 + 6a2 βˆ’ 7a + 3Β 

Question 3:Β 
A company distributes its product by train and by truck. The cost of distributing by train can be modeled as βˆ’0.06x2 + 35x βˆ’ 135, and the cost of distributing by truck can be modeled as βˆ’0.03x2 + 29x βˆ’ 165, where x is the number of tons of product distributed. Write a polynomial that represents the difference between the cost of distributing by train and the cost of distributing by truck.Β 


we have that
[the cost of distributing by train]-[the cost of distributing by truck]
=[βˆ’0.06x2 + 35x βˆ’ 135]-[βˆ’0.03x2 + 29x βˆ’ 165]
=(-0.06x2+0.03x2)+(35x-29x)+(-135+165)
=-0.03x2+6x+30

the answer is the option
C: βˆ’0.03x2 + 6x + 30
MJbrown

Answer:

Β  Β  Β  Β  Β  Β  Β  Β  Β  Β  Β m^2 + 10m^3

Step-by-step explanation:

Ver imagen MJbrown

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