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Vladimir79 [104]
2 years ago
11

What is an Equivalent Expression of 3x+20?

Mathematics
1 answer:
Lesechka [4]2 years ago
7 0

Step-by-step explanation:

4x hope this explanation will help

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Triangle with base of 12 and height of 10. what is the other number?????????
victus00 [196]
120 is the other number. 
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3 years ago
Plz help i will mark u brainlyest.
spin [16.1K]
A = 5, -10
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3 years ago
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Answer the following questions about the sphere whose equation is given by x2+y2+z2−8x+4y=−4. 1. Find the radius of the sphere.
Anna [14]

Answer:

we have (a,b,c)=(4,-2,0) and R=4 (radius)

Step-by-step explanation:

since

x²+y²+z²−8x+4y=−4

we have to complete the squares to finish with a equation of the form

(x-a)²+(y-b)²+(z-c)²=R²

that is the equation of a sphere of radius R and centre in (a,b,c)

thus

x²+y²+z²−8x+4y=−4

x²+y²+z²−8x+4y +4 = 0

x²+y²+z²−8x+4y +4 +16-16 =0

(x²−8x + 16) + (y² + 4y + 4 ) + (z²) -16 = 0

(x-4)² + (y+2)² + z² = 16

(x-4)² + (y-(-2))² + (z-0)² = 4²

thus we have a=4 , b= -2 , c= 0 and R=4

8 0
3 years ago
2(n+5)= -2 I need the full explination
lakkis [162]

Answer:

n=-6

Step-by-step explanation:

2n + 10 = -2

2n=-12

n=-6

Hope this helps!

If not I'm sorry.

3 0
2 years ago
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if y varies directly as x, and y is 6 when x is 72, what is the value of y when x is 8? a. 1/9 b. 2/3 c. 54 d. 96
Lapatulllka [165]
The value of y when x is 8 is b. 2/3
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3 years ago
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