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Harlamova29_29 [7]
3 years ago
8

One of Euclid's postulates has always seemed to be too complex, and Euclid himself thought it should be proved as a theorem--but

it cannot be. Which postulate is this
Mathematics
1 answer:
GenaCL600 [577]3 years ago
3 0

Answer:

The answer is "The Parallel Postulate ".

Step-by-step explanation:

When the two lines will cross where angles of the amount are less than 180 degrees and the direct line overlaps two direct lines, that produces 2 ways the reinforcement on the same side to less than 180 degrees if extended indefinitely from the other hand. All this means that there is only one segment on the same plane parallel to a certain line at any point, not with a line.

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A girl starts to walk to her school, which is 20 miles away, at 6:50 and at a rate of 3 miles per hour. After a while, her dad p
Alexeev081 [22]

The girl walked a distance of \boxed{{\mathbf{5 miles}}}  in her way.

Further explanation:

The time can be calculated as,

{\text{ time}}=\frac{{{\text{distance}}}}{{{\text{speed}}}}  

Given:

It is given that a girl stands 20 miles away from the school at 6:50{\text{ am}}  and she started walking at the rate of 3{\text{ mi/hr}}  and then after some time her dad pick up and he drives at the rate of 30{\text{ mi/hr}} . They reach the school at 9:00{\text{ am}} .

Step by step explanation:

Step 1:

Consider x  as the distance she walked in her way.

The speed of the girl when she walked is 3{\text{ mi/hr}} .

Now use the formula of time to obtain the walk time.

\begin{gathered}{\text{ walktime}}=\frac{{{\text{distance walked}}}}{{{\text{walking speed}}}}\hfill\\{\text{ walktime}}=\frac{x}{3}\hfill\\\end{gathered}

Since the total distance is 20{\text{ miles}} .

Then consider 20-x  as the distance driven by the car.

The driving speed is 30{\text{ mi/hr}} .

Now use the formula of time to obtain the drive time.

\begin{gathered}{\text{drive time}}=\frac{{{\text{distance travelled by car }}}}{{{\text{ speed of car}}}}\hfill\\{\text{drive time}}=\frac{{20-x}}{{30}} \hfill\\\end{gathered}

Step 2:

Now we calculate the total time took by girl to reach the school.

  9:00-6:50={\text{2 hrs 10 min}}

Now convert the timing into hours as,

\begin{aligned}2{\text{ hours 10 minutes}}&=2+\frac{{10}}{{60}}\\&=2\frac{1}{6}\\&=\frac{{13}}{6}{\text{ hrs}}\\\end{aligned}

Step 3:

Total time is the sum of drive time and walk time.

The total time can be expressed as,

\frac{x}{3}+\frac{{20-x}}{{30}}=\frac{{13}}{6}

Now solve the above equation by cross multiply method.

\begin{aligned}\frac{x}{3}+\frac{{20-x}}{{30}}&=\frac{{13}}{6}\hfill\\\frac{{10x+20-x}}{{30}}&=\frac{{13}}{6}\hfill\\\frac{{9x+20}}{{30}}&=\frac{{13}}{6}\hfill\\6\left({9x+20}\right)&=13\left({30}\right)\hfill\\\end{aligned}

Now simplify the further equation.

\begin{aligned}6\left({9x+20}\right)&=13\left({30}\right)\hfill\\54x+120&=390\hfill\\54x&=390-120\hfill\\54x&=270\hfill\\\end{aligned}

Simplify the further equation.

\begin{aligned}54x&=270\hfill\\x&=\frac{{270}}{{54}}\hfill\\x&=\frac{{45}}{9}\hfill\\x&=5\hfill\\\end{gathered}

Therefore, the girl walked 5 miles.

Learn more:  

  • Learn more about the distance between the points <u>brainly.com/question/6278187 </u>
  • Learn more about the equivalent fraction <u>brainly.com/question/952259 </u>
  • Learn more about midpoint of the segment <u>brainly.com/question/3269852 </u>

Answer details:

Grade: High school

Subject: Mathematics

Chapter: Speed, distance and time

Keywords: girl, distance, drive, walk, drive time, dad, speed, travelled, formula, cross multiply, fraction, number, multiply, addition, subtraction, equation, school

8 0
3 years ago
Read 2 more answers
Which function is best represented by this graph
marishachu [46]

Answer:

y = -2x+4

Step-by-step explanation:

hope this helps

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2 years ago
G LEARNER'S PACKET (LeaP) KSS TV. LEARNING PHASES AND LEARNING ACTIVITIES VI. REFLECTION (Time Frame: Day 4 ) The learner commun
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The inference shows that the correct options that will fill the information will be:

  • I need to study harder to understand the lesson.
  • I realize that my knowledge will improve in this lesson..
  • I need to study more to be able to explore more in the activity.

<h3>What is an inference?</h3>

An inference means the conclusion that can be deduced from the information given in a literary work.

In this case, it's important that one checks the information and correctly put in the options.

The learner communicates the explanation of their personal assessment as indicated in the Learner’s Assessment Card. • The learner, in their notebook, will write their personal insights about the lesson using the prompts below. I understand that ___________________. I realize that ________________________. I need to learn more about __________. ​

Learn more about inference on:

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6 0
2 years ago
2. Claire drinks 64 fluid ounces of water o day. How many gallons of water does she drink in a week?​
Ymorist [56]

Answer:

3.5 gallons a week

Step-by-step explanation:

Well 64 gl Oz is basically half a gallon. So half a gallon of water a day would result in 0.5*7 (7 days in a week) and you would get 3.5 gallons.

4 0
3 years ago
Name the line and plane shown in the diagram. A.AB and plane ABD B.BA and plane DC C.AC and plane ABD D.AB and plane DA
elena-14-01-66 [18.8K]

Answer: The line is AB and the plane is ABD, the first option is the correct one.

Step-by-step explanation:

Ok, first some definitions.

A line is any line that crosses two colinear points. Particularly, you can see in the graph that the line crosses through A and B, so the line is AB.

A plane needs 3 non-colinear points (if the points where colinear, then the points may define a line). Other definition of plane is "a line and a point that is not in the line"

So, if our line is AB, then the possible planes are:

ABC and ABD.

then the correct option is:

Line AB and plane ABD, so the correct option is the first one.

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3 years ago
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