What is my number?
1. my number has four digits.
(a) my first digit is a square number.
(b) my first digit + my fourth digit = 15
(c) my fourth digit is a triangular number.
(d) my second digit is 1/2 of my third digit.
(e) my third digit is a different square number
from the first digit.
answer =

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.

step-by-step explanation:

consider an orange peel: if you want to try and lay it flat, you have to stretch it, we know exactly how things are being stretched or squashed at any given point. we have many different map projections because each has different patterns of some projections can even preserve certain features of the earth without

i dont know the answer but here's a picture of a dog

i those same problems in math and dont know how to do them