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just olya [345]
3 years ago
9

Find the coordinates of d if e is the midpoint of CD for C(-3, 4) and E(0, 1).

Mathematics
1 answer:
Yanka [14]3 years ago
8 0

Answer:

D(3;-2).

Step-by-step explanation:

1)  X_D=2*X_E-X_C;\\Y_D=2*Y_E-X_C.

2) according to the formulas above:

X_D=2*0+3=3;\\Y_D=2*1-4=-2.

3) finally, D(3;-2).

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Find the quadratic function y=a(x-h)^2 whose graph passes through the given points. (12,-7) and (9,0)
ryzh [129]

Answer:

y = (-7/3)(x - 9)

Step-by-step explanation:

<em><u>(12, - 7)</u></em>

y = a(x - h)^2

-7 = a(12 - h)^2

- 7 = a(144 - 24x + h^2)

<em><u>(9,0)</u></em>

0 = a(x - h)^2

0 = a(9 - h)^2

0 = a(81 - 18h + h^2)

From (9,0) we can conclude that

a = 0

or

(9 - h)^2 = 0

Let's try the second possibility.

Take the square root of both sides.

9 - h = sqrt(0)

Add h to both sides

9 - h = 0  

h = 9

So now what we have is

y = a(x - 9)

Use the first equation to get a

-7 = a(12 - 9)

-7 = a(3)

-7/3 = a

Answer

y = (-7/3)(x - 9)

6 0
3 years ago
A recipe calls for 2/3 of a cup of milk. Zeinab wants to make 1/4 of the original recipe. How many cups of milk does Zeinab need
hjlf

Answer:

1/6 of a cup of milk. Or at least that's my answer.

Step-by-step explanation:

Okay, we need to find out 25% of 2/3.

25% of 2/3 is 1/6.

6 0
3 years ago
Help me solve this please.​
poizon [28]
6, 7, 8, and 9. just plug the X into the equation
4 0
3 years ago
I don’t understand can someone help me
Elden [556K]
You set 49 equal to 8x - 15

So

8x - 15 = 49
+15 + 15

8x = 64

Then divide by 8

X= 8
6 0
3 years ago
Пожалуйста помогите с решением
zubka84 [21]

Answer:

( x, y) =

65 \ \frac{15}{11}

this is your answer

3 0
2 years ago
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