ABC est un triangle rectangle en A tel que: AB = 3 cm et AC = 4 cm. 1) Calculer BC.

I est le milieu de [AC). La parallèle menée de 1 à (AB) coupe (BC) en J.

2) Calculer IJ.

3) a) Calculer AJ.

b) En-déduire la nature du triangle ABJ.

K est le milieu de [AB].

4) Montrer que (KJ) est parallèle à (AC).

5) Quelle est la nature du quadrilatère AKJC ? Justifier.​

Researchers were interested in whether relaxation training decreases the number of headaches a person experiences. they randomly assigned 20 participants to a control group or a relaxation training group and noted the change in number of headaches each group reported from the week before training to the week after training. which statistical analysis should be performed to answer the researchers' question?

There are 45 questions on your math exam. you answered 810 of them correctly. how many questions did you answer correctly?

(05.02)a farmer has decided to divide his land area in half in order to plant soy and corn. calculate the area of the entire area so he knows how much soil is needed. a parallelogram with a height of 6 yards and side length 9 yards. the height forms a triangle with the slanted side of the rhombus with a base of 2.5 yards. rhombus is split into a soy half and a corn half. each bag of soil covers 40 square yards. how many bags should the farmer purchase?