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enyata [817]
3 years ago
10

Find the value of X and Y

Mathematics
1 answer:
Cloud [144]3 years ago
3 0

Answer:

x=22,y=12

Step-by-step explanation:

angles at a point add up to 360

0r opt for

5x+4=114

5x=110

x=22

there is a straight line

angles there are

5x+4+3x-24+2y=180

like terms

8x-20+2y=180

8x+2y=200

x=22

8*22=176

2y=200-176

2y=24

y=12

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given three points of a quadratic function find the equation that defines the function (-2,20)(0,-2)(1,-4) hurry please!!​
kotykmax [81]

Answer:

D: y = 3x² - 5x - 2

Step-by-step explanation:

The general form of a quadratic equation is: y = ax² + bx + c    

c is the y-intercept

We are given the point (0, -2) which is the y-intercept, so we can rewrite our general form into

y = ax² + bx - 2

We can create a system of equations to solve for a and b.  We are given two points.  

Equation 1:  Take the first point (-2, 20) and plug it into our general equation...

20 = a(-2)² + b(-2) - 2

   20 = 4a - 2b - 2

        22 = 4a - 2b         (add 2 to both sides)

           11 = 2a - b         (divide both sides by 2 since every coefficient is even)

Equation 2:   Take the point (1, -4) and plug it into the general equation

-4 = a(1)² + b(1) - 2

  -4 = a + b - 2

     -2 = a + b

Now we have our 2 equations:

11 = 2a - b

-2 = a + b

Since the coefficients of b are already have opposite signs, add the two equations together (elimination method)

Now we have

9 = 3a       now solve for a...

 3 = a   (divide by 3 on both sides)

If a = 3, then

-2 = 3 + b

    -5 = b

Our equation is

y = 3x² - 5x - 2

6 0
3 years ago
The problem says find product then identify the two whole numbers between which the product lies the problem is 3×3/4=
galina1969 [7]

Answer:

So identifying this problem,3 times 3 is 9.Then 9 divided by 4 equals 2.25.To give you an answer of (2.25+9).

Step-by-step explanation:

4 0
4 years ago
Read 2 more answers
What is the distance to the earth’s horizon from point P? Enter your answer as a decimal in the box. Round only your final answe
hammer [34]

Answer:

[Distance to the Horizon]^2 =Height of the skydiver x Diameter of the Earth

D^2 = 1.4 x 7918

D^2 = 11,085.2

D = Sqrt(11,085.2)

D = ~ 105.28628......miles - Distance to Horizon.

Step-by-step explanation:

5 0
3 years ago
2. Given that a = 3 , b = 2, and c = −1, evaluate each of the following expressionsa) (a+3b)
ollegr [7]

Answer:

9

Step-by-step explanation:

if you substitute a for 3 and b for 2 you should get 9

5 0
2 years ago
Lou has a part-time job in a restaurant. He earns $69.38 a day when he cooks and $56.63 a day when he busts his tables. Last wee
Stolb23 [73]

Answer:

$182.64

Step-by-step explanation:

$56.63x2 =$113.26

$113.26+$69.38

=$182.64

3 0
3 years ago
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