If 30 m of wire weigh 8 Kg, what will 40 m of the same kind of wire weigh? show explanation

10 2/3 or 10.66

Step-by-step explanation

30/8 = 40/x

cross multiply:

30x/30 = 320/30

30 and 30 cancel out so you're just left with "x"

divide 320/30 = 10.66

x= 10.66 or 10 2/3

Hope this helps. and my bad if I get it wrong. Have a great day!

i think it is everything has to equal 180 so, if i correct 4=c. 6=d. 8=a. 7=b. and the last question would be c. because they are parallel lines and they are congruent.

step-by-step explanation:

the reason everything has to equal to 180 is because that is how it works. i'm guessing that is its rule. 4 and 8 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 6 and 7 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 60+60 is 180. so, now you have your answer

b. y = 4x - 2

step-by-step explanation:

to find a parallel equation to an equation, make sure both equations have the same slope but different y-intercepts.

y = 4x + 1

4 = slope

1 = y-intercept

y = 4x - 2

4 = slope

-2 = y-intercept

they both have the same slope but different y-intercepts, so, b. is the correct answer.

and to check your work, you can graph both equations. : )