Answer:
Huh??
where on brainly
Step-by-step explanation:
3 less than twice a number x.
Twice a number would be the x multiplied by 2, and 3 less would be 3 subtracted by 2*x.
2x-3 <- The numeral form.
I hope this helps!
~kaikers
Answer:
74 Bolts
Step-by-step explanation:
First find how many bolts he had to start with:
7 x 11 = 77
Then simply subtract to find out how many he used:
77 - 3 = 74
The amount of balls in a given layer can be found by squaring the layer it is in
4 layers
top layer (1st) is 1
2nd is 4
3rd layer is 9
4th is 16
add them up
1+4+9+16=30
30 in that pyramid