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3 years ago

Can some one help me

Mathematics

2 answers:

matrenka [14]3 years ago

8 0

So again, you want to convert to decimals. 3 13/20=3.65 an 92/25= 3.68
so in order of least to greatest, you have 3 13/20, 92/25, 3.78, 3.788

Dmitry_Shevchenko [17]3 years ago

8 0

You can make them all fractions to make the ordering a lot simpler...

378/100, 3788/1000, 73/20, 92/25 now make all have a denominator of 1000

3780/1000, 3788/1000, 3650/1000, 3680/1000 so now we can just compare the numerators to see which is least to greatest...

3 13/20, 92/25, 3.78, 3.788

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What are the areas of the faces of the rectangular pyramid? Select all that apply. 12 in.2 24 in.2 30 in.2 20.8 in.2 60 in.2 61.

ale4655 [162]

B, C, D

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5 0

2 years ago

Read 2 more answers

an airplane files 867 miles with a constant speed of 612 mph and then another 1984 miles with a constant speed of 744 mph what i

seraphim [82]

The average speed is the ratio of the total distance to the total time. Then the average speed of the airplane will be 698.19 miles per hour.

<h3>What is speed?</h3>

The distance covered by the particle or the body in an hour is called speed. It is a scalar quantity. It is the ratio of distance to time.

We know that the speed formula

Speed = Distance/Time

An airplane files 867 miles with a constant speed of 612 mph and then another 1984 miles with a constant speed of 744 mph.

Then time taken for the first trip will be

t₁ = 867 / 612

t₁ = 1.4167 hours

Then time taken for the second trip will be

t₂ = 1984 / 744

t₂ = 2.6667 hours

Then the average speed is the ratio of the total distance to the total time.

The total distance will be

Total distance = 867 + 1984

Total distance = 2851 miles

The total time will be

Total distance = 1.4167 + 2.6667

Total distance = 4.0834 hours

Then the average speed will be

Average speed = 2851 / 4.0834

Average speed = 698.19 mi/h

More about the speed link is given below.

brainly.com/question/7359669

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4 0

2 years ago

the sum of the first six terms of GP is 9 times the sum of the first three terms find the common ratio

Nezavi [6.7K]

Answer:

If the sum of first 6 terms is 9 times to the sum of first 3 terms of the same G.P., then common ratio of the series will be. Solution: Let a be the first term and r be the common ratio of the GP. Hence option (2) is the answer.

3 0

3 years ago

A small radio transmitter broadcasts in a 29 mile radius. If you drive along a straight line from a city 32 miles north of the t

hram777 [196]

Answer: He will pick up a signal from the transmitter 29.43 miles of the drive.

Step-by-step explanation:

Since we have given that

Radius = 29 mile

So, equation of circle would be

$x^2+y^2=29^2=841$

There is a straight line from a city 32 miles north i.e. (0,32) to a second city 40 miles east of the transmitter i.e. (40,0)

So, equation of line would be

$y-32=\dfrac{0-32}{40-0}(x-0)\\\\y-32=\dfrac{-32}{40}x\\\\y-32=-0.8x\\\\y+0.8x=32\\\\y=32-0.8x$

So, we will put this value in the equation of circle.

$x^2+(32-0.8x)^2=841\\\\x^2+1024+0.64x^2-51.2x=841\\\\1.64x^2-51.2x=841-1024\\\\1.64x^2-51.2x=-183\\\\1.64x^2-51.2x+183=0$

So, x= 4.12 and x = 27.1

So, y = 28.7, y = 10.32

So, distance between them would be

$\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}\\\\=\sqrt{(27.1-4.12)^2+(28.7-10.32)^2}\\\\=29.43$

Hence, he will pick up a signal from the transmitter 29.43 miles of the drive.

7 0

2 years ago

There are 12 inches in 1 foot and 5,280 feet in 1 mile. Is Elena ran 2-1/2 miles how many inches is that ?

puteri [66]

Answer:

158400 inches is 2 1/2 miles

Step-by-step explanation:

2.5* 5280 because 2.5 miles is 13200 feet.

13200*12 because 13200 feet is 158400 inches.

The answer would be 158400 inches.

Please mark as brainliest! Hope this helps! If you need anymore help just ask! :D

4 0

3 years ago

Read 2 more answers