K is the midpoint of . if = 3x + 1 and , find the length of

1 answer:

4 0

3x + 1 = 1/3x + 9 Multiply through by 3
9x + 3 = x + 27 Subtract x 
8x + 3 = 27 Subtract 3 
8x = 24 
x = 3 

AK = 3*3 + 1 = 10 

AB = 2*AK = 20

You might be interested in

How many lines of symmetry does the letter x have

lana [24]

The letter x has two lines of symmetry.

8 0

3 years ago

Read 2 more answers

How many whole numbers are there between 20 and 30

Leto [7]

There are 9 whole numbers in between 20 and 30

6 0

3 years ago

A large truck has two fuel tanks, each with a capacity of 150 gallons. Tank 1 is half full, and Tank 2 is empty.

12345 [234]

Answer:

1) $G(t) = 75 + \frac{23}{4}t\\$

2) After 8 minutes delivering fuel the tanks will have 121 gallons of fuel

Step-by-step explanation:

1) For generating the equation we have to take into account that in the tanks there is a initial volume of fuel that corresponds to 75 gallons, as it is stated that tank one is half full. As the capacity for tank 1 is of 150 gallons, half of the tank equals to:

$\frac{150}{2} = 75 gallons$

Now we have to convert the rate of delivery that is expressed as a mixed number to an improper fraction so:

$5\frac{3}{4} = \frac{(5x4)+3}{4} = \frac{23}{4}$

Then the pumping rate is of 23/4 gallons per minute, to get how many gallons are in the tank we just need to multiply this rate by the time in minutes, and as there is an initial volume we have to add it, so we have the following equation:

$G(t) = 75 + \frac{23}{4}t\\$

2) To know how much fuel is in the tank after 8 minutes we have to replace this time in the previous equation so we have

$G(t) = 75 + \frac{23}{4}t\\G(8) = 75 + \frac{23}{4}(8)\\G(8) = 75 + 23(2)\\G(8) = 75 + 46\\G(8) = 121 gallons$