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Naddik [55]
3 years ago
14

What is the value of x 20 35 60 70

Mathematics
2 answers:
nika2105 [10]3 years ago
6 0
X+40 =3x (vertical angles)
2x = 40
x = 20

answer  is A. 20 (first choice)
Galina-37 [17]3 years ago
6 0
TRS and VRW are vertical angles, therefore they're congruent

x + 40 = 3x
40 = 2x
20 = x

x is 20
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Use the graphing calculator to graph the quadratic function y = 2x2 – 6x – 8. Which values are solutions of 0 = 2x2 – 6x – 8? Ch
SashulF [63]
4 is your answer. hope its correct
7 0
3 years ago
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consider the function f(x) = x2 2x – 15. what are the x-intercepts of the function? left-most x-intercept: ( , 0) right-most x-i
eimsori [14]

we have

f(x)=x^{2} +2x-15

we know that

The x-intercept is the value of x when the value of the function is equal to zero

so

in this problem

Find the roots of the function

equate the function to zero

x^{2} +2x-15=0

Group terms that contain the same variable, and move the constant to the opposite side of the equation

x^{2} +2x=15

Complete the square. Remember to balance the equation by adding the same constants to each side

x^{2} +2x+1=15+1

x^{2} +2x+1=16

Rewrite as perfect squares

(x+1)^{2}=16

Square root both sides

(x+1)=(+/-)\sqrt{16}

(x+1)=(+/-)4

x=-1(+/-)4

x1=-1+4=3

x2=-1-4=-5

x^{2} +2x-15=(x-3)(x+5)

therefore

<u>the answer is</u>

the x-intercepts are the points (3,0) and (-5,0)

3 0
3 years ago
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Write an equation that models the scenario if x represents the number of nights and y represents the total cost of the trip. (th
Cloud [144]

Answer:

f(x)=50x

Step-by-step explanation:

f(x)= y

y= 50

if x is 1  the answer is 50

if x is 2 the answer is 100

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7 0
3 years ago
5(z+4)+5(2−z) simplyfied
romanna [79]

Answer:

5(z+4) + 5(2-z) =

5z + 20 + 10 -5z = 30

3 0
2 years ago
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Pls help in this aaaaaa
ivanzaharov [21]
The question is incorrect. X is not defined UNLESS the hexagon is a regular hexagon, which means that all sides are equal (given) AND all angles are equal (not given).

Error in question aside, and  ASSUMING the hexagon is regular, you can apply the principle that
1. the sum of exterior angles of ANY polygon is 360.
2. the sum of exterior angles and interior angles at EACH vertex is 180.
3. Multiply sum from (2) above by the number of vertices and subtract 360 gives the sum of the interior angles.
4. IF the polygon is regular (all angles equal), then each interior angle equals the result from (3) divided by n, the number of vertices.

Example for a regular heptagon (7 sides, 7 verfices).
1. Sum of exterior angles = 360
2. sum of interior and exterior angles at EACH vertex=180
3. multiply 180 by 7, subtract 360
180*7-360=900
4. since heptagon is regular, each interior angle equals 900/7=128.57 deg.


8 0
3 years ago
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