All categories

2 years ago

What is 2 4/5 divided by 1 1/3

Mathematics

1 answer:

marishachu [46]2 years ago

3 0

Answer:

2.1 or 21/10

Step-by-step explanation:

2 4/5--14/5 and 1 1/3--4/3

multiply by reciprocal--14/5 * 3/4--42/20=2.1

You might be interested in

ARE these Good grades?

pishuonlain [190]

Answer:

those are pretty good! all a's and b's are good! Keep up the good work!!

Step-by-step explanation:

3 0

2 years ago

QUESTION 11

notsponge [240]

Answer:

Step-by-step explanation:

3( 2 + 2 ) - 4

3( 4 ) - 4

12-4

3 0

2 years ago

Mary having her living room and bedroom painted. Interior Designs USA charges $60.00 to evaluate the space plus $35.00 per hour

Lera25 [3.4K]

The last one is correct because 60+35+35+35=165
55+55+55=165

8 0

3 years ago

What is the quotient of the following rational expression? x^3+3x^2-4x+5/x^2-2

Law Incorporation [45]

Answer:

Here:

Step-by-step explanation:

7 0

1 year ago

Dwayne drove 18 miles to the airport to pick up his father and then returned home. On the return trip he was able to drive an av

Nesterboy [21]

Answer:

30 mph

Step-by-step explanation:

Let d = distance (in miles)

Let t = time (in hours)

Let v = average speed driving to the airport (in mph)

⇒ v + 15 = average speed driving from the airport (in mph)

Using: distance = speed x time

$\implies t=\dfrac{d}{v}$

Create two equations for the journey to and from the airport, given that the distance one way is 18 miles:

$\implies t=\dfrac{18}{v} \ \ \textsf{and} \ \ t=\dfrac{18}{v+15}$

We are told that the total driving time is 1 hour, so the sum of these expressions equals 1 hour:

$\implies \dfrac{18}{v} +\dfrac{18}{v+15}=1$

Now all we have to do is solve the equation for v:

$\implies \dfrac{18(v+15)}{v(v+15)} +\dfrac{18v}{v(v+15)}=1$

$\implies \dfrac{18(v+15)+18v}{v(v+15)}=1$

$\implies 18(v+15)+18v=v(v+15)$

$\implies 18v+270+18v=v^2+15v$

$\implies v^2-21v-270=0$

$\implies (v-30)(v+9)=0$

$\implies v=30, v=-9$

As v is positive, v = 30 only

So the average speed driving to the airport was 30 mph

(and the average speed driving from the airport was 45 mph)

8 0

1 year ago

Read 2 more answers