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1 year ago

7/9 ÷ 3/9 = ????????

Mathematics

2 answers:

Gennadij [26K]1 year ago

6 0

7/9 ÷ 3/9 =

= (7•9)/( 3•9)

= 63/27 = 7/3

Answer is 7/3

DENIUS [597]1 year ago

3 0

Answer:

2 1/3

Step-by-step explanation:

Division of fractions is equivalent to multiplication by the reciprocal of the second fraction:

7/9 ÷ 3/9 = 7/9 × 9/3

Once rearranged, multiply all of the numerators by each other. Do the same with the denominators and form a new fraction with these values:

7 × 9/9 × 3 = 63/27

The Greatest Common Factor (GCF) of 63 and 27 is 9. The result can be simplified by dividing both the numerator and denominator by 9.

63/27 = 63 ÷ 9/27 ÷ 9 = 7/3

7 ÷ 3 = 2R1, therefore:

7/3 = 2 1/3

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An open-topped glass aquarium with a square base is designed to hold 444 cubic feet of water. What is the minimum exterior surfa

In-s [12.5K]

Answer:

291.05ft²

Step-by-step explanation:

Volume of the aquarium = L³

L is the length of one side of the aquarium

444 = L³

L = cuberoot[444]

L= 7.63ft

Since the glass aquarium is opened at the top

Total surface Area = 5L²

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3 years ago

Jadas family has completed 30% of a trip. They have traveled 15 miles. How far is the trip

valentina_108 [34]

Answer:

Step-by-step explanation:

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x=50

8 0

3 years ago

Read 2 more answers

Pls help, this is due today

slava [35]

What’s the question?
If it’s area then the formula is pi r^2
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3 0

3 years ago

Read 2 more answers

the walls of a square room need pain each of the four walls is 12 ft wide by 8.5 feet tall. One gallon of paint covers 75ft^2. h

Bingel [31]

Answer:

You would need 2 1/2 gallons of paint to finish the room.

Step-by-step explanation:

Step 1: 12 x 8.5

Step 2: you should get 102. Then multiply 102 x 4

Step 3: then divide by 150 (which is the quotent of 75 x 2)

Your finally should be 2.72 :)

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3 years ago

On the first day of travel, a driver was going at a speed of 40 mph. The next day, he increased the speed to 60 mph. If he drove

gogolik [260]

Velocity, distance and time:

This question is solved using the following formula:

$v = \frac{d}{t}$

In which v is the velocity, d is the distance, and t is the time.

On the first day of travel, a driver was going at a speed of 40 mph.

Time $t_1$ , distance of $d_1$ , v = 40. So

$v = \frac{d}{t}$

$40 = \frac{d_1}{t_1}$

The next day, he increased the speed to 60 mph. If he drove 2 more hours on the first day and traveled 20 more miles

On the second day, the velocity is $v = 60$ .

On the first day, he drove 2 more hours, which means that for the second day, the time is: $t_1 - 2$

On the first day, he traveled 20 more miles, which means that for the second day, the distance is: $d_1 - 20$

Thus

$v = \frac{d}{t}$

$60 = \frac{d_1 - 20}{t_1 - 2}$

System of equations:

Now, from the two equations, a system of equations can be built. So

$40 = \frac{d_1}{t_1}$

$60 = \frac{d_1 - 20}{t_1 - 2}$

Find the total distance traveled in the two days:

We solve the system of equation for $d_1$ , which gets the distance on the first day. The distance on the second day is $d_2 = d_1 - 20$ , and the total distance is:

$T = d_1 + d_2 = d_1 + d_1 - 20 = 2d_1 - 20$

From the first equation:

$d_1 = 40t_1$

$t_1 = \frac{d_1}{40}$

Replacing in the second equation:

$60 = \frac{d_1 - 20}{t_1 - 2}$

$d_1 - 20 = 60t_1 - 120$

$d_1 - 20 = 60\frac{d_1}{40} - 120$

$d_1 = \frac{3d_1}{2} - 100$

$d_1 - \frac{3d_1}{2} = -100$

$-\frac{d_1}{2} = -100$

$\frac{d_1}{2} = 100$

$d_1 = 200$

Thus, the total distance is:

$T = 2d_1 - 20 = 2(200) - 20 = 400 - 20 = 380$

The total distance traveled in two days was of 380 miles.

For the relation between velocity, distance and time, you can take a look here: brainly.com/question/14307500

3 0

3 years ago