Andrei weighs 32 kg, which is 4/7 of the weight of his older sister and 2/5 of the weight of his father. the mother’s weight is 7/8 of the father’s weight. can they all, together, go into an elevator that can hold 300 kg if they also have to take their 17 kg dog?

Yes.

Step-by-step explanation:

Andrei weighs 32 kg.  This is 4/7 of his sister's weight; this means his sister weighs

7/4(32) = 56 kg.

32 kg is 2/5 of his father's weight; this means his father weighs

5/2(32) = 80 kg.

His mother weighs 7/8 of his father's weight; this means his mother weighs

7/8(80) = 70 kg.

Together they weigh

32+56+80+70 = 238.

With his dog, they weigh

238+17 = 255 kg.

This means they can all go into the elevator.

the answer is (4,3)

since the rule for r0, 90º is (-y,x) and it was already applied to form the image, all you have to do is reverse the answer using this formula.

she will sew have sewn five dresses   and be 1/3 done with the sixth one in an hour.

step-by-step explanation:

3/4 of an hour=45 mins

lucy makes 1 dress per 11.25 minutes

45 mins+11.25 mins=56.25 mins

60 mins- 56.25 mins=3.75 mins

3.75 mins is 1/3 of of 11.25 mins

therefore she the other 1/3 would be part of the hour and she will have sewn 5 dresses and begun the sixth.

contact me if you have any questions you are welcome.