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Anna71 [15]
3 years ago
11

Sonia graphs the equations y = –x2 + 4x and y = x – 4 to solve the equation –x2 + 4x = x –

Mathematics
2 answers:
pshichka [43]3 years ago
7 0
<span>x>=2
https://www.youtube.com/watch?v=wJbQHTNZbHQ
 X=2

</span>
lina2011 [118]3 years ago
6 0
<h2>Answer:</h2>

The solutions of the equation -x^2+4x=x-4 is:

               x= -1 and x=4

<h2>Step-by-step explanation:</h2>

The solution of the graphs of the equation is equal to the x-value of the point of intersection of the graph of two functions i.e. the function on the left side of the equality on the right side of the equality.

Here, the expression is:

-x^2+4x=x-4

Hence, we will see at which point the graph  of:

y=-x^2+4x

and y=x-4 meet.

The point of intersection of the graph is: (-1,-5) and (4,0).

Hence, the solution of the graph is: x= -1 and x=4

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What is the digit in the ones place in the whole number 3614
Ray Of Light [21]

Answer:

4

Step-by-step explanatio



8 0
3 years ago
Read 2 more answers
Based on the diagram shown, find θ to the nearest degree.
sattari [20]

Answer:

  θ = 38°

Step-by-step explanation:

The lower right triangle is congruent to the upper left triangle, so we have θ and 20° being the two acute angles in the triangle. The law of sines tells you ...

  sin(θ)/9 = sin(20°)/5

  sin(θ) = (9/5)sin(20°)

  θ = arcsin(9/5·sin(20°)) ≈ 38°

___

Another solution to the triangle is θ = 180° -38° = 142°. The diagram clearly shows θ as an acute angle, so we take this second solution to be extraneous.

8 0
3 years ago
Find the values of a and b.<br> a<br> The diagram is not drawn to scale.<br> a =<br> U<br> b =<br> U
nata0808 [166]

Answer:

a = 36°

b = 144°

Step-by-step explanation:

<h3><u>Method 1</u></h3>

Number of sides = n = 10

Sum of interior angles = (n - 2) × 180°

                                     = (10 - 2) × 180°

                                     = 8 × 180°

                                     = 1440°

Interior angle = b = sum of interior angles ÷ number of sides

                          b = 1440 ÷ 10

                          b = 144°

              a + b = 180° (Sum of angles in the straight line)

         a + 144° = 180°

a + 144° - 144° = 180° - 144°

                    a = 36°

<h3><u>Method 2</u></h3>

Number of sides = 10

Exterior angle = a = 360° ÷ Number of sides

                           a = 360° ÷ 10

                           a = 36°

            a + b = 180° (Sum of angles in the straight line)

        36° + b = 180°

36° + b - 36° = 180° - 36°

                 b = 144°

7 0
2 years ago
Can someone please help me.
Natasha2012 [34]

Answer:10√2

Step-by-step explanation:

∆ABC is a right angle triangle

Angle A + Angle B + angle C = 180

There angel B = 180-135= 45

Angle A = Angle B

Therefore AC= BC=10

By Pythagoras ppt AB^2=10^2 +10^2

=100+100

=√200

=10√2

3 0
3 years ago
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What is the horizontal distance from the origin to the point 2,9
Rina8888 [55]

Answer:

2

Step-by-step explanation:

The x-coordinate of point (2, 9) is 2.

The distance from 0 to 2 on a number line is 2.

Answer: 2

5 0
3 years ago
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