10*10*10*10 = 10,000.
Because you can use either of then digits for each space.
Also, you can see that the valid numbers are from 0000 to 9999 = 9999 + 1 = 10,000 numbers.
Answer:
44
Step-by-step explanation:
these triangles are similar, so the proportions of the sides will be the same. Since the small triangle's proportions are 4:4, the bigger one's will be 44:44
Answer:
Step-by-step explanation:
hello :
x²-3x-10=0 means : (x-5)(x+2)=0
x-5=0 or x+2=0
conclusion two solutions : 5 and -2