Line segment AB is reflected across the y-axis. The resulting segment, A'B', is translated 7 units left and 2 units down. How is the length of AB affected by the reflection and the translation? A) A'B' is twice the length of AB. B) A'B' is half the length of AB. C) A'B' is the same length as AB. D) More information about the coordinates is needed.

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8

step-by-step explanation:

this is a subtraction problem.

10 - 2 = 8

3

step-by-step explanation:

in standard form:

a= dictionaries

b= maps

you have to buy 3 dictionaries, so put a 3 next to the a (dictionaries) so that you can multiply them by each other.

a3+b= 60 (the amount of money you have)

we already know the cost of a=15 so replace a with $15

($15 x 3)+b=60

multiply 15 and 3 to get $45 and replace it with $45

45+b=60

and then replace b with 15 to get the total:

45+15=60

that means you have $15 left after buying 3 dictionaries.

15 divided by the cost of a map ($5) equals 3.

so you can buy 3 maps.

sorry if it was confusing!

10.416 meters per second

step-by-step explanation:

distance=1 00 meters

time= 9.6 seconds in decimal form or 9 3/5 as a mixed number

average speed= 100/9.6

=10.416 meters per second or 10 52/125 as a mixed number.