3 years ago

What's the value of this expression ? 40-(3x2)x6

2 answers:

7 0

its 4 because you do the expression in parenthesis first which is 6 then you go by oder of operation so you multiply the 6 by 6 then, you go back and subtract your answer from 40 which gives you 4. ta da and im in 5th too

natita [175]3 years ago

3 0

4

40-(3x2)x6
40-6x6
40-36
4

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Sketch the curve with the given vector equation. Indicate with an arrow the direction in which t increases. r(t) = 4 cos(t)i + 4

slega [8]

Answer:

The equation to this question is " $x^2+y^2=16$ "

Step-by-step explanation:

Given value:

$\to r(t) = 4 \cos (t)i + 4 sin(t)j + k\\where \\\\\to x(t)= 4 \cos t\\\to y(t) = 4 \sin t\\\to z(t)=1\\$

$\to x^2+y^2= 16 \cos^2 t +16 \sin^2 t\\\\\to x^2+y^2= 16 (\cos^2 t +\sin^2 t)\\\\\therefore (\cos^2 t +\sin^2 t =1)\\\\\to x^2+y^2= 16 (1)\\\\\to x^2+y^2= 16\\\\\to z=1$