4. Pedro tiene $45.000 ahorrados en su cuenta. Quiere comprar una bicicleta que le cuesta $140.000
pesos. Para pagar el monto que le hace falta, quiere pedir un préstamo. ¿Cuánto dinero debe pedir
prestado? Utilice el espacio para hacer el proceso.
Halle el término que hace falta en cada equivalencia,

A 13 - 22 =
B. 23-( ) = 19
C. 23 +1) = -6
D. -65-1
=-83
E. -50 -() = - 100​

Ricardo ran the 400 meter race 3 times his fastest time was 54.3 seconds his slowest time was 56.1 seconds if his average time was 55.0 seconds what was his time for the third race

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?

The volume of a sphere is increased by 6%. calculate the corresponding percentage increased in it area.