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Lunna [17]
3 years ago
13

First answer gets brainliest

Mathematics
1 answer:
german3 years ago
5 0

Answer: answer A

Step-by-step explanation:

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In the 1939 movie The Wizard of Oz, when the brainless Scarecrow is given the confidence to think by the Wizard(by merely handin
lord [1]

The equation that the scarecrow uttered can be expressed mathematically as:

sqrt (C) = sqrt (A) + sqrt (B)

where A, B, and C are the sides of the triangle

 

Since the triangle is an isosceles, therefore A = B and

sqrt (C) = 2 sqrt (A)

given that the measure of the leg is 3, A = 3, C is:

sqrt C = 2 sqrt (3)

sqrt C = 3.464

C = 12

 

In a any triangle, the sum of two sides must be greater than the third side, since in this case C > A + B therefore the Scarecrow is not correct because the correct relationship should be A + B > C.

 

To find the correct hypotenuse, we start with the Pythagorean equation:

C^2 = A^2 + B^2

 

So what the scarecrow mistakenly did was to ignore the “+” symbol during the square root. Taking the square root on both sides, the correct equation is:

C = sqrt (A^2 + B^2)

 

Calculate for C, since A = B = 3:

C = sqrt (3^2 + 3^2)

C = 4.24

 

So now A + B > C and this is now correct.

6 0
3 years ago
MATH PROBLEM! PLEASE HELP ME IT'S TTM!!!
Dafna1 [17]

Answer:

The system of equations i.e. y - x = 15 and 25 + 2x = y represents the correct graph as the point of intersection of this system is (x, y) = (-10, 5) which is also the point of intersection of the two lines shown in graph.

Step-by-step explanation:

The graph is showing the following system of equations:

                               y - x = 15 and 25 + 2x = y

The reason is very simple. As the point of intersection of two lines is (-10, 5). It means the two lines in the graph meet at the x-coordinate = -10 and y-coordinate = 5. So, (-10, 5) is the point of intersection of the two lines as shown graph.

If we solve the system of equations i.e. y - x = 15 and 25 + 2x = y to get the values of x and y to determine its intersection. So,  we would get the value of x = -10, and y = 5. Hence, The graph is showing the system of the equation of y - x = 15 and 25 + 2x = y.

<em>Verification:  Lets solve </em>system of equations i.e. y - x = 15 and 25 + 2x = y to get the values of x and y to determine its intersection.

                                  y - x = 15

                                  y = x + 15

                    Substitute x+15 for y in 2x+25 = y

                                  2x + 25 = y

                                 2x + 25 = x + 15

                                 x = −10

                    Substitute x = −10 for x in y = x+15

                                y = x + 15

                                y = −10 + 15

                                 y = 5

                So,      x = −10 and y = 5

Hence, The graph is showing the system of the equations of y - x = 15 and 25 + 2x = y.

<em>The system of equation in first choice (y=15 and y =25), represent a pair of parallel lines which will never intersect at any point, and two other system of equations in the given options yield different point of intersections. Hence, they do not represent the corresponding graph.</em>

Therefore, only the system of equations i.e. y - x = 15 and 25 + 2x = y represents the correct graph as the point of intersection of this system is (x, y) = (-10, 5) which is also the point of intersection of the two lines shown in graph.

Keywords: system of equation, point of intersection, graph

Lear more system of equation from brainly.com/question/12526075

#learnwithBrainly

5 0
3 years ago
What are the coordinates of A" if it is reflected over the y-axis?
Aleonysh [2.5K]

Answer:

(3,1)

Step-by-step explanation:

When reflecting over the y-axis if the point was on quadrant 1, then the coordinated must be changed like so (x,y) -> (-x,y), so therefore in the scenario, all we have to do is reverse this process. So in this case, Point A is (-3,1) so all we have to do is change the -3 to a positive 3 to the the coordinates of A'' which is (3,1).

6 0
3 years ago
Will it be acceptable to write R285 456 in south afrika EXPLAIN​
Natasha2012 [34]

Answer:

Society of the world to make this year the best ever friend a person could hope for a good friend of mine and her family is a great place to work and to be able to enjoy the world of

7 0
3 years ago
Match the equivalent expressions 4(2x + 3) - 7x
lozanna [386]
The answer would be 8x+ 12 - 7x or 20x - 7x
3 0
2 years ago
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