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3 years ago

-5.4×(-1.8)=?A. -9.72B. 9.72C.-3D.3

Mathematics

2 answers:

zhuklara [117]3 years ago

5 0

Answer:

Step-by-step explanation:

-5.4*-1.8=9.72

They cancel each other out since they're both negative, so just ignore the negatives and do the regular multiplication

Fiesta28 [93]3 years ago

4 0

The answer would be -9.72

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Consider F and C below. F(x, y, z) = yz i + xz j + (xy + 6z) k C is the line segment from (2, 0, −2) to (5, 4, 2) (a) Find a fun

WITCHER [35]

Answer:

Required solution (a) $f(x,y,z)=xyz+3z^2+C$ (b) 40.

Step-by-step explanation:

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$F(x,y,z)=yz \uvec i +xz\uvec j+(xy+6z)\uvex k$

(a) Let,

$F(x,y,z)=yz \uvec i +xz\uvec j+(xy+6z)\uvex k=f_x \uvec{i} +f_y \uvex{j}+f_z\uvec{k}$

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Differentiate this with respect to y we get,

$f_y=xz+g'(y,z)$

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$g'(y,z)=0\implies g(y,z)=0+h(z)\implies g(y,z)=h(z)$

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$f(x,y,z)=xyz+h(z)$

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$f_z=xy+h'(z)=xy+6z$

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$h'(z)=6z\implies h(z)=3z^2+C$ (By integrating h'(z)) where C is integration constant. Hence,

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2 years ago

Y = x + 2<br> y = 3x - 4

exis [7]

Answer:

x=3; y=5

Step-by-step explanation:

y=x+2

y=3x-4

so x+2=3x-4

2x=6

x=3

because y=x+2

x=3

so y=3+2

8 0

2 years ago