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
Aleks04 [339]
3 years ago
10

Why is graphing not always the best option for solving systems?

Mathematics
2 answers:
Sladkaya [172]3 years ago
6 0
Best Answer:  When graphing and locating the point of intersection & hence the solution, you might find that this point does not have integer co ordinates. You would have to estimate the approximate coordinates. Hence, the algebraic methods are preferred, as you could then state the exact co ordinates like (5/3, 4/9).        
RideAnS [48]3 years ago
3 0
1, Might not be precise 
2, Can be hard to plot the graphs
3, If there are many solutions that will be really hard to plot sometimes. 

This is just from the top of my head. 
You might be interested in
Ella and Iris are planning trips to nine countries this year. There are 12 countries they would like to visit. They are deciding
NISA [10]

Using the combination formula, it is found that there are 220 ways to decide which countries to skip.

The order in which the countries are skipped is not important, hence the <em>combination formula </em>is used to solve this question.

<h3>What is the combination formula?</h3>

C_{n,x} is the number of different combinations of x objects from a set of n elements, given by:

C_{n,x} = \frac{n!}{x!(n-x)!}

In this problem, 3 countries are skipped from a set of 12, hence the number of ways is given by:

C_{12,3} = \frac{12!}{3!9!} = 220

More can be learned about the combination formula at brainly.com/question/25821700

#SPJ1

5 0
2 years ago
(27x4 - 18x3 + 9x 2) = 3x<br> Answer ASAP
shepuryov [24]

Answer:

x = 24

Step-by-step explanation:

27 x 4 = 108

18 x 3 = 54

9 x 2 = 18

108 - 54 + 18 = 3x

72 = 3x

72/3 = x

24 = x

7 0
3 years ago
What is the measure of Angle Y?
ivolga24 [154]

Answer:

62 degrees

Step-by-step explanation:

180 - (65 + 53) =

180 - 118 =

62 degrees

Hope that helps!

3 0
3 years ago
Item 11
marysya [2.9K]

Answer:

4 ft higher

Step-by-step explanation:

Since the ladder is 10 ft long and its top is 6 feet high(above the ground), we find the distance of its base from the wall since these three (the ladder, wall and ground) form a right angled triangle. Let d be the distance from the wall to the ladder.

So, by Pythagoras' theorem,

10² = 6² + d²  (the length of the ladder is the hypotenuse side)

d² = 10² - 6²

d² = 100 - 36

d² = 64

d = √64

d = 8 ft

Since the ladder is moved so that the base of the ladder travels toward the wall twice the distance that the top of the ladder moves up.

Now, let x be the distance the top of the ladder is moved, the new height of top of the ladder is 6 + x. Since the base moves twice the distance the top of the ladder moves up, the new distance for our base is 8 - 2x(It reduces since it gets closer to the wall).

Now, applying Pythagoras' theorem to the ladder with these new lengths, we have

10² = (6 + x)² + (8 - 2x)²

Expanding the brackets, we have

100 = 36 + 12x + x² + 64 - 32x + 4x²

collecting like terms, we have

100 = 4x² + x² + 12x - 32x + 64 + 36

100 = 5x² - 20x + 100

Subtracting 100 from both sides, we have

100 - 100 = 5x² - 20x + 100 - 100

5x² - 20x = 0

Factorizing, we have

5x(x - 4) = 0

5x = 0 or x - 4 = 0

x = 0 or x = 4

The top of the ladder is thus 4 ft higher

7 0
3 years ago
What is the equivalent fractions between 4/7and3/5
enot [183]
2/21, 16/28
Multiply by 2,3,4
3 0
3 years ago
Other questions:
  • 2 2/3 divided by 4<br> help
    13·2 answers
  • You are selling items from a catalog for a school fundraiser.Write and solve two inequalities to find the range of sales that wi
    5·1 answer
  • The sum of thwo numbers is 25. their difference is 7. find the numbers
    8·1 answer
  • Time (sec) Frequency
    8·2 answers
  • It's transversal lines, pretty easy but kinda confused
    10·2 answers
  • The odds of choosing one black ball from an urn are 7 to 13. what is the probability of getting a black ball?
    13·2 answers
  • A spinner is divided into four equal sections that are numbered 2, 3, 4, and 9. The spinner is spun twice. How many outcomes hav
    12·2 answers
  • Find the volume of the sphere. Round your answer to the nearest tenth.
    9·1 answer
  • The axis of symmetry for a parabola with x intercepts (-8,0) &amp; (12,0)
    15·1 answer
  • he frequency table represents the job status of a number of high school students. A 4-column table with 3 rows titled job status
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!