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Artyom0805 [142]
3 years ago
12

What does k and y equal?

Mathematics
1 answer:
Kaylis [27]3 years ago
8 0
X and y vary directily means

y=kx

72=3k
divide both sides by 3
24=k

k=24
y=72
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4 years ago
How to solve 3x - 4 = 11+10
Mamont248 [21]

Answer:

x= 25/3 or 8.333333

Step-by-step explanation:

you add 11 to 10 to get 21

3x-4=21

add 4 to both sides, which will cancel out the (-4)

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divide each term by 3 to get x by itself

3x/3 = 25/3

you will then get x=25/3

3 0
3 years ago
Read 2 more answers
What is the standard form of 5x^2+5y^2-10x+20y-30=0
o-na [289]

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We need to get the equation in square form

We apply completing the square method

5x^2-10x+5y^2+20y-30=0

Divide all the terms by 5

x^2-2x+y^2+4y-6=0

Group x  terms and y terms separately  

(x^2-2x)+(y^2+4y)-6=0

By completing the square method, we take half of coefficient of x  and square it

\frac{-2}{2} = -1

square it (-1)^2= 1

Add 1 on both sides

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\frac{4}{2} = 2

square it (2)^2= 4

Add 4 on both sides

(x^2-2x+1)+(y^2+4y+4)-6=0+1+4

Add 6 on both sides

(x^2-2x+1)+(y^2+4y+4)=6+1+4

Now factor both parenthesis

(x-1)^2+(y+2)^2=11

The equation of the circle is (x-1)^2+(y+2)^2=11

7 0
4 years ago
What is 4÷628??? ANSWER PLS
Vitek1552 [10]
It is 157. Try long division:)
6 0
3 years ago
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Four-fifths of a number is -48
aksik [14]
-48:4=-12
-12*5=-60
Hope it helps
4 0
4 years ago
Read 2 more answers
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