1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
zhuklara [117]
3 years ago
6

Fatima plotted one side of a heptagon on a grid. the points (-8,1) and (-8,8) are joined to form a side of the heptagon. Fatima

says this side is a vertical line segment that is 9 units long. What is Fatimas error?A:The side measures 25 units, not 9 units.B:The side measures 7 units, not 9 units.C:The side measures 16 units, not 9 units.D:The side measures 8 units, not 9 units
Mathematics
2 answers:
ivann1987 [24]3 years ago
7 0

Answer:

The side measures 7 units, not 9 units.

Step-by-step explanation:

Edge 2020

Reil [10]3 years ago
4 0

The general formula for the distance between two points is

d(A,B) = \sqrt{(A_x-B_x)^2 + (A_y-B_y)^2}

Anyway, if A and B have the same x or y coordinates, this formula can be simplified. For example, in this case the two points have the same x coordinate of -8, so the following part of the formula simplifies:

(A_x-B_x)^2 = (-8-(-8))^2 = (-8+8)^2 = 0^2 = 0

So, we're left with

d(A,B) = \sqrt{(A_y-B_y)^2}

but the square root of a square is the absolute value of the object being squared:

d(A,B) = \sqrt{(A_y-B_y)^2} = |A_y-B_y|

which is this case means |1-8| = |-7| = 7

which is the correct length of the side.

You might be interested in
I need help with this​
natima [27]

Answer:

the first is true

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Neeeeed help please
Nikolay [14]
A nice riddle, mathematical riddle.

Assuming a turtle winning means the declared winner is the weaker one actually won over the stronger one.  In this context, the turtle winner is the one who has a lesser number of favourable votes.

The given rules for the points are as follows:
1. Point for the first choice must be greater than or equal to that of the second choice.
2. All points must be positive whole numbers.

Let's suppose we have Henry against Tim.
Henry is favourite of the voters and is the leading candidate, according to popular polls.
Tim is an excellent manipulator, sly, and everybody knows this.

On polling day, the vote count came out as follows (in point counts)

Henry      Tim
2              1
2              1
2              1
2              1
2              1
2              1
10            1  (Henry's own vote)
1          100  (Tim's own vote)
------------------
17        107  TOTAL POINTS

So Tim the turtle was declared winner of the race, and since everything was according to rule, even a recount of the votes did not change the results.

Be aware, voting by districts (instead of popular votes) also exhibits a similar problem.



3 0
3 years ago
Read 2 more answers
I need the answer and work
ad-work [718]
A) 2x +3

Plug in the x

2(4.1) + 3

8.2+ 3= 11.2

A is 11.2


B) 16-5y

Plug in the y

16 - 5(2.3)

16- 11.5= 4.5

B is 4.5


C) x+y

Plug in x and y

4.1 + 2.3= 6.4

C is 6.4




7 0
3 years ago
What is wrong with this histogram?
Marta_Voda [28]
The intervals along the x axis are inconsistent. the one that says 21-30 should either be split into 2 or have twice the width.

Hope this helps :)
3 0
3 years ago
*MAJOR POINT BOOST*<br> describe the fibonacci sequence in a detailed explanation
Kryger [21]
The Fibonacci Sequence is a stream of numbers that typically begins with a "0" or "1". From there, any number placed after would be added to the previous number. 
For instance, if I started with a "1", and the next number was a "2", the number after would be a "3". From this "3", it would be a "5", the next number would then be a "8". 
It would look like this:
1, 2, 3, 5, 8
4 0
3 years ago
Other questions:
  • The graph shows the charges of an instructor. The instructor charges an initial fee and then an hourly rate of $8.00 an hour for
    15·2 answers
  • Which statements are true for the following expression?
    15·1 answer
  • Type the correct answer in each box. The sum of a number and two times a smaller number is 62. Three times the bigger number exc
    12·1 answer
  • I need the answer to these problem...I’ve been stuck on it the most.
    15·1 answer
  • 5.67<br> is it rational
    9·2 answers
  • What is 32.5 cents as a decimal
    6·1 answer
  • Find the slope of the line through each pair of points.<br> (17, -13) and (17, 8)
    12·2 answers
  • Which of the following is a quadratic equation whose roots are 3 and -1?
    10·2 answers
  • Anyone know how to solve?
    8·2 answers
  • Two exterior angles of a triangle measure 135° and 100°. What are the measures of the interior angles of the triangle?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!