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IRINA_888 [86]
2 years ago
11

A car travels at a constant speed of 20m/s.

Mathematics
1 answer:
Bad White [126]2 years ago
6 0

Answer:

Step-by-step explanation:

Let's convert either m/s to km/s, or km to meters.

I'll convert km to meters and solve.

8 minutes and 20 seconds

There are 1,000 meters/kilometer.  We can write that as a conversion factor:  (1000m/km)

(10km)(1000m/km) = 10,000 meters

At 20m/s, we see that:  (10,000m)/(20 m/s) = 500 seconds

(1 minute/60 seconds)

(500s)*(1m/60s) = 8 1/3 minutes, or 8 minutes and 20 seconds

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Help me with it I will give you 20 points ​
cupoosta [38]

Answer:

a^2 +b^2=c^2

Given vertices of the triangle are A(4,4),B(3,5) and C(−1,−1)

We know that slope of line passing through the points (x 1,y 1) and (x 2,y 2

) is given by m= x 2−x 1

y

2

​

−y

1

​

​

,x

2

​



=x

1

​

Slope of AB i.e.m

1

​

=

3−4

5−4

​

=−1

Slope of BC i.e.m

2

​

=

−1−3

−1−5

​

=

−4

−6

​

=

2

3

​

Slope of CA i.e. m

3

​

=

4+1

4+1

​

=

5

5

​

=1

Clearly, m

1

​

m

3

​

=−1

⇒ line segments AB and CA are perpendicular to each other i.e; the given triangle is right angled at A(4,4).

Thus the points (4,4),(3,5) and (1,1) are the vertices of a right angled triangle.

Step-by-step explanation:

4 0
3 years ago
You would like to start a club for psychology majors on campus, and you are interested to find out what proportion of psychology
Natalija [7]

From the sample used to find out what psychology majors would join the club and if it is biased, we can say that;

<u><em>- Yes, the sampling method is biased. </em></u>

<u><em>- The likely direction of the bias is because you only asked 5 people which </em></u>

<u><em>is  not a significant percentage of those offering psychology majors and as </em></u>

<u><em>such the 4 out of 5 gotten is likely going to be an over estimation of those </em></u>

<u><em>who are willing to pay to join this club.</em></u>

We are told that;

  • You want to start a club.
  • This club is for psychology majors.
  • You want to find the proportion of those in the psychology majors that will join this club you want to organize.

  • Now, out of all the students offering psychology majors, you only asked 5 of them if they will be interested. Since 4 out of the 5 are interested and you want to use that to form a basis of the proportion of those interested , it would lead to <em>sampling bias</em> since the population is not adequately represented.

Therefore, this would lead to sampling bias and thus the sample is biased.

Read more at; brainly.com/question/12637861

8 0
3 years ago
one day, gale and hector each recorded temperatures outside their homes. function g shows tempatures, in F, gale recorded c hour
myrzilka [38]
Hector, 4 degrees, Gale
8 0
4 years ago
Read 2 more answers
??????????????????.?..
pogonyaev
Y-1=2(x+3) just plug into the formula
6 0
3 years ago
How many vertices are in a polyhedron with 6 triangular faces?
Bingel [31]
I believe it will be 36 Im sorry if im wrong.
6 0
4 years ago
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