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igor_vitrenko [27]
3 years ago
14

I need help with my math.

Mathematics
1 answer:
Sauron [17]3 years ago
8 0
15 inches
 i found it on https://answers.yahoo.com/question/index?qid=20160331230251AA3MILQ

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Solve the inequality for x.<br> 7 &gt; 2x+9
Advocard [28]

Answer:

<h2>x<-1</h2>

Step-by-step explanation:

7 > 2x+9\\\\\mathrm{Switch\:sides}\\\\\mathrm{Subtract\:}9\mathrm{\:from\:both\:sides}\\\\2x+9-9

5 0
3 years ago
A small airplane flies 750 miles with an average speed of 250 miles per hour. 1.75 hours after the plane leaves, a Boeing 747 le
sleet_krkn [62]

Answer:

The average speed of the 747 was of 600 miles per hour.

Step-by-step explanation:

A small airplane flies 750 miles with an average speed of 250 miles per hour.

Velocity is distance divided by time, and here, we find the time of the small airplane. So

v = \frac{d}{t}

250 = \frac{750}{t}

250t = 750

t = \frac{750}{250}

t = 3

1.75 hours after the plane leaves, a Boeing 747 leaves from the same point. Both planes arrive at the same time;

This means that it traveled 750 miles in 3 - 1.75 = 1.25 hours.

What was the average speed of the 747?

v = \frac{d}{t} = \frac{750}{1.25} = 600

The average speed of the 747 was of 600 miles per hour.

4 0
2 years ago
5 more than a number s<br>5+s or s+5
cestrela7 [59]
Either one works according to me.
5 0
3 years ago
Can u answer this question I need help
maks197457 [2]
The easiest way to do this is find all your basic info for a data set for both of the locations and cross check with the options what is true.
6 0
3 years ago
A pendulum is 18 feet long. It's central angle is 44°. The pendulum makes one back and forth swing every 12 seconds. To the near
Gekata [30.6K]

Answer: it swings 138 feet in 1 minute

Step-by-step explanation:

The back and forth movement of the pendulum represents the length of the arc of the circle.

The formula for determining the length of an arc is expressed as

Length of arc = θ/360 × 2πr

Where

θ represents the central angle.

r represents the radius of the circle.

π is a constant whose value is 3.14

From the information given,

Radius, r = length of pendulum = 18 feet

θ = 44°

Length of arc = distance moved by the pendulum in one direction.

Therefore,

Length of arc = 44/360 × 2 × 3.14 × 18

Length of arc = 13.816 feet

The pendulum makes one back and forth swing every 12 seconds. It means that the distance it covers in one back and forth movement is

13.816 × 2 = 27.632 feet

If the pendulum swings 27.632 feet in 12 seconds, then

In 60 seconds(1 minute), the distance covered would be

(60 × 27.632)/12 = 138 feet

7 0
3 years ago
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