3 years ago

What is the straight distance between point h and j on the grid below

Mathematics

1 answer:

vesna_86 [32]3 years ago

3 0

Answer:

Step-by-step explanation:

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which of the following are the dimensins of a rectangle that has a perimeter of 148 and an area of 144

atroni [7]

The dimensions are 72x2
Because $72*2=144$ & $72+72+2+2=148$
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Hopefully this is Brainliest worthy!!

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4 years ago

Define f(0,0) in a way that extends f to be continuous at the origin. f(x, y) = ln ( 19x^2 - x^2y^2 + 19 y^2/ x^2 + y^2) Let f (

kirill115 [55]

Answer:

f(0,0)=ln19

Step-by-step explanation:

$f(x,y)=ln(\frac{19x^2-x^2y^2+19y^2}{x^2+y^2})$ is given as continuous function, so there exist $lim_{(x,y)\rightarrow(0,0)}f(x,y)$ and it is equal to f(0,0).

Put x=rcosA annd y=rsinA

$f(r,A)=ln(\frac{19r^2cos^2A-r^2cos^2A*r^2sin^2A+19r^2sin^2A}{r^cos^2A+r^2sin^2A})=ln(\frac{19r^2(cos^2A+sin^2A)-r^4cos^2Asin^a}{r^2(cos^2A+sin^2A)})$