It took 7 hours to mow 4 lawns; at that rate, how many lawns could be mowed in 21 hours

12

Step-by-step explanation:

7x3=21

3x4=12

boOM

Hope This Helps

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4 lawns were mowed in 7 hours, so if 7 x 3 = 21.

Then you can mow 12 lawns in 21 hours

4 lawns each 7 hours.

Step-by-step explanation:

i don't have the answer rn but go to math papa. it shows the steps and the answer. hope this : )

step-by-step explanation:

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