A because 1 makes the most sense and i already answered it
Answer:
A
Step-by-step explanation:
scientific notation always contains a decimal number
Answer:
see graph of y=3/4 x-4
Step-by-step explanation:
Assuming you mean

Below is a graph of that one. The slope is 3/4 and the interception with the y axis is at y=-4. The equation is in its normal form y=ax+b with a=3/4 (slope) and b=-4 (y intercept), so no conversion needed.
You have to be careful on how you write these equations down. It might very well be that you meant:
or 
However, those are more complex so I'm hoping for the first one... ;-)
Answer:
y = -1/2x + 5/2 or y = -0.5x + 2.5
Step-by-step explanation:
perpendicular lines have reciprocated slopes (opposite signs and values)
y = 2x + 1 → y = (-1/2x) + b
plug in (3,1) to find b
1 = -1/2(3) + b
1 = -1.5 + b
2.5 = b
y = -1/2x + 5/2 or y = -0.5x + 2.5
Answer:
Step-by-step explanation:
First, find a common denominator. Fractions can only be added when there is a common denominator.
1/10 & 1/5... 1/10 & 2/10
1/10--2/10
Subtracting two negatives is the same as adding a positive.
1/10+2/10
Final Answer: 3/10
Have a great day!