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4 years ago

11

One-on-one mapping from one plane to the same plane is called:

1 answer:

iVinArrow [24]4 years ago

4 0

One-on-one mapping from one plane to the same plane is called transformation.

Transformation of a point either in form of translation, reflection, rotation or enlargement will map each coordinate of $x$ and $y$ onto a new coordinate $x_{1}$ and $y_{1}$

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The circus is coming to town. Cindy is selling tickets. The first day she sold 8 adult tickets and 5 children tickets for a tota

Galina-37 [17]

Let the price of adult ticket and children ticket be a and c respectively
8a+5c=177.50 -> 24a+15c=532.5
12a+6c=255.00 -> 24a+12c=510

24a+15c-24a-12c=532.5-510
3c=22.5
c=7.5
a=17.5

3 0

3 years ago

A tourist in France wants to visit 10 different cities. If the route is randomly selected, what is the probability that she will

ella [17]

Answer:

1/3628800

Step-by-step explanation:

This question requires that we calculate

1/number of permutations of 10 cities

= P(n,k) = n!/(n-k)!

We have

n = 10

k = 10

= 10!/(10-10)!

= 10!

number of permutations of 10 cities 10! This Is equal to 3,628,800

From this answer we the probability of doing a random tour of these 10 different cities in alphabetical order.

And this is

= 1/3,628,800

6 0

3 years ago

What should be added to -5/7 to get -2/3

Brums [2.3K]

Answer:

This is basic algebra

$\frac{-5}{7} + x =\frac{-2}{3} \\x=\frac{-2}{3} + \frac{5}{7} \\x = \frac{-14 + 15}{21} \\x = \frac{1}{21}$

Hope that answers your question

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

In a family, each brother has as many sisters as brothers, but each sister has twice as many brothers as she has sisters. How ma

daser333 [38]

Answer:

4 brothers and 3 sisters

Step-by-step explanation:

Let x be the number of brothers and y be the number of sisters in the family.

1. Each brother has x-1 brothers and y sisters. If each brother has as many sisters as brothers, then

$x-1=y.$

2. Each sister has y-1 sisters and x brothers. If each sister has twice as many brothers as she has sisters, then

$2(y-1)=x.$

3. Solve the system of two equations:

$\left\{\begin{array}{l}x-1=y\\ \\2(y-1)=x\end{array}\right.\Rightarrow 2(y-1)-1=y,\\ \\2y-2-1=y,\\ \\2y-y=2+1,\\ \\y=3.$

Then

$x=y+1=3+1=4.$

4 0

4 years ago

Find the values of x y and z in the triangle to the right

vlabodo [156]

Can I see the triangle pls

7 0

3 years ago