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krok68 [10]
3 years ago
15

HELPPPPP...........

Mathematics
1 answer:
Blababa [14]3 years ago
6 0

Answer:

3 and 4 are the only ones that are right angles.

Step-by-step explanation:

A^2+B^2=C^2

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What is the equation of the quadratic graph with a focus of (3, 6) and a directrix of y = 4? f(x) = one fourth (x − 3)2 + 1 f(x)
mina [271]
 Let point (x, y) be any point on the graph, than the distance between (x, y) and the focus (3, 6) is sqrt((x - 3)^2 + (y - 6)^2) and the distance between (x, y) and the directrix, y = 4 is |y - 4|

Thus sqrt((x - 3)^2 + (y - 6)^2) = |y - 4|
(x - 3)^2 + (y - 6)^2 = (y - 4)^2
x^2 - 6x + 9 + y^2 - 12y + 36 = y^2 - 8y + 16
x^2 - 6x + 29 = -8y + 12y = 4y
(x - 3)^2 + 20 = 4y
y = 1/4(x - 3)^2 + 5

Required answer is f(x) = one fourth (x - 3)^2 + 5
8 0
3 years ago
Can a ratio be a rate?
puteri [66]
Yes. in math you will get to a point where you will have to use ratios to do rates they kind of the same thing.
5 0
3 years ago
Show how many groups of 0.5 are in 3.
worty [1.4K]

Answer:

The answer is 6 groups.

Step-by-step explanation:

0.5 is equal to one half.

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3 is half of 6.

So the answer is 6.

Hope I helped ya.

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7 0
3 years ago
Read 2 more answers
The temperature at a ski resort was 12°F at 5:00 A.M.
zimovet [89]
22.5 i Hope I’m right

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4 0
3 years ago
Sum of <br> 5 3/7 - 2 1/5
Arte-miy333 [17]

Answer:

Step-by-step explanation:

5 3/7= 38/7 (move the wholes into the fraction)

2 1/5=11/5

38/7- 11/5  we need the common denominator=35

190/35 -77/35= 113/35

=3 8/35

4 0
2 years ago
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