In order for the equation to be true, one of the factors on the left has to equal zero

So, 2x-3=0 or x-4=0 (the 3 on the left for multiplication doesn’t affect the possible answers for x)

Once you solve them, you conclude that x has to be 4 or 3/2.

7 0

3 years ago

A boat traveled in a river upstream for a distance of 30 miles at a constant rate, r, in miles per hour, and then made the retur

ICE Princess25 [194]

Answer:

Step-by-step explanation:

r = boat's rate

c = current's rate

1. A boat traveled in a river upstream for a distance of 30 miles. Travelling upstream, the current obstructs the movement, so the actual boat's rate is r - c mph.

If the boat took 4 hours to travel upstream, then

$\dfrac{30}{r-c}=4\\ \\4(r-c)=30\\ \\4r-4c=30$

2. A boat traveled in a river downstream for a distance of 30 miles. Travelling downstream, the current helps the movement, so the actual boat's rate is r + c mph.

If the boat took 3 hours to travel downstream, then

$\dfrac{30}{r+c}=3\\ \\30=3(r+c)\\ \\3r+3c=30$

So, we get the system

4r-4c=30

3r+3c=30

8 0

4 years ago

The additive inverse of 10 is -17. If 10 + (-17) = 0, then the numbers are additive inverses. True or False?

Vesnalui [34]

Answer:

False

Do not worry I am not giving you any false answers

3 0

3 years ago

A construction crew has just finished building a road. the crew worked for 10 days. if they build 2 3/4 kilometers of road each

Amanda [17]

The answer is 55/2 I am happy to help.

5 0

3 years ago