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svetlana [45]
3 years ago
14

How are real numbers used to describe real-world situations?

Mathematics
1 answer:
Zolol [24]3 years ago
5 0
Real numbers are all the rational numbers such as -7 and 4/3 and all irrational numbers.
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Seven more then 3 rimes a number is 49
NikAS [45]
7 <span> more than 3 times a number </span>
<span>more than is code for + </span>
<span>times is multiply </span>
<span>so 7+3n=31 </span>

<span>solve: </span>
<span>3n=24 </span>
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6 0
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Which ordered pair is a solution to the equation 8x - 2y = 4 ?
kipiarov [429]

Answer:

(2, 6)

Step-by-step explanation:

Because 8(2)-2(6)=16-12=4.

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3 years ago
Find the measure of x. (to the nearest tenth)
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3 years ago
What is the equation of a parabola with a focus (2,4) and directrix y = 0?
svet-max [94.6K]

Answer:

The equation of the parabola is (x-2)^2 =8(y-2)

Step-by-step explanation:

Given focus is (2,4) and the directrix is y=0 so the parabola axis is parallel to y- axis.

Focus is (α,β+a) and the directrix is of the form y = β-a

so given  focus is (2,4) compare (α,β+a)

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now given directrix y = β-a = 2-2 = 0

now the general parabola is (x-α)^2 =4a(y-β) ...(1)

now substitute α =2 ,β=2 and a=2 above equation

The equation of the parabola is (x-2)^2 =8(y-2)

6 0
3 years ago
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