Answer:
x=435 ,y=145
Step-by-step explanation:
You substitute x for 3y in this equation and get
3y+y=580
from here you simplify
4y=580
and divide 580 by 4 to get what y is
y=580/4
y=145
now since x=3y you mutiply y by 3
x=3(y)
x=3(145)
x=435
Answer:
4n-1
Step-by-step explanation:
The difference in the numbers is 4 so the coefficient must be 4 for the nth term meaning
4n
11 is the third term however we need to find the first so..
11=3rd term
-4
7=2nd term
-4
3=1st term
now we need to minus 4 from 3 which is -1 (3-4)
meaning the answer put together will be 4n-1
Answer:
$90
Step-by-step explanation:
Given that:
Number of mobile phones = 450
Cost per mobile phone = $30
Number of mobile phones purchased = 3
The total cost of 3 mobile phones = amount paid remaining :
(Cost per mobile phone * number of mobile phones purchased)
= $30 * 3
= $90
Answer:
l = 20 m
Step-by-step explanation:
600/30 = 20
Answer:
A = 26 + D
A + D = 48
use substitution
(26 + D) + D = 48
26 + 2D = 48
2D = 22
D = 11 years old
find the inequality that will result in the daughter being 11
