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question 12
the bottom of a garage door is 2.8 meters above the ground. when a button is pushed, the door moves down at a rate of 0.6 meter per second. w

a 0.6 + 2.8t = 0
b 0.6 – 2.8t = 0
c 2.8 + 0.6t = 0
d 2.8 – 0.6t = 0

D. 2.8 - 0.6t

Step-by-step explanation:

The t represents how much time it takes. So, it goes down by 0.6 per second until it gets to 0.

14 meters.

step-by-step explanation:

we have been given that design for a monorail track system is dilated to get a photocopy. it has been given that ratio of bc: fg is 1: 2.

let us find the factor of dilation using our given proportions.

upon cross multiplying our equation we will get,

since we know that dilation of a figure changes all the sides of figure by same factor. so all the sides of photocopy are 2 times the sides of design and factor of dilation is 2.

now let us find length of side eh by multiplying its corresponding side length by 2.

we can see that side ad corresponds to side eh. so we will multiply 7 by 2 to get the side length of eh.

therefore, the length of side eh on the photocopied image is 14 meters.