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Elina [12.6K]
3 years ago
9

Which describes how to calculate the range of this data set?

Mathematics
1 answer:
ELEN [110]3 years ago
5 0

Answer:

B) Subtract 12-4 to calculate the range of this data set

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True or False<br> 5/2 + (- 2.5) is negative.
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This is false, it is not negative because the answer is 0.
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What is the value of the expression (9+15)/3+2?
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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

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

(x-4)² + (y+2)² + z² = 16

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8 0
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A) Factorise a^2 - b^2​
Vadim26 [7]

Answer:

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Step-by-step explanation:

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