Answer:

Step-by-step explanation:

Step 1: Factor out the common term 

Step 2: Add the whole numbers

Step 3: Combine the fractions:

Step 4: Convert the improper fractions to mixed numbers

Step 5: Add the numbers

Therefore, the answer to the equation is
in fraction, and decimal; 
Answer C. The pattern is that each number in sequence 1 is being doubled to get the number in sequence 2, and 40*2=80
Answer:
the last one
Step-by-step explanation:
Answer:
<u>infinitely many solutions</u>
Step-by-step explanation:
The system of equations :
- 3x + 2y = 7
- -4.5x - 3y = -10.5
Multiplying Equation 1 times 3 and Equation 2 times 2 :
- 9x + 6y = 21
- -9x - 6y = -21
Putting the equations in standard form after simplifying :
- 6y = -9x + 21 ⇒ <u>y = -1.5x + 3.5</u>
- -6y = 9x - 21 ⇒ <u>y = -1.5x + 3.5</u>
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As both equations are the same, the system will have <u>infinitely many solutions</u>.