The answer is 3
if you substitute x as 4 then it would be 2 x 4 = 8
8-5=3
I'm solving your system by substitution.
2x-4=5, 5x+4y =2
Step# 1: solve for x
2x - 4+ 4= 5 + 4( add +4 to both sides)
2x = 9
x = 9/2
Step# 2: solve for y
5(9/2) + 4y = 2
4y + 45/2 = 2
4y 45
y = 45/4 = 11.25
Well you need to know a radius or other information
Answer:
d = 1.7
Step-by-step explanation:
Given expression:
2.50 +7.75 = 4 + 3.75d
Problem:
Solve for d;
Solution:
Collect all like terms to the same side;
2.50 + 7.75 - 4 = 3.75d
6.25 = 3.75d
Divide through by 3.75 to find d;
d = 1.7
The question is incomplete:
Reyna runs a textile company that manufactures T-shirts. The profit, p, made by the company is modeled by the function p
=
s^2+9s-142, where s is the number of T-shirts sold. How many T-shirts should be sold to earn a profit of more than $2,000?
Answer:
s>42
Reyna needs to sell more than 42 T-shirts.
Step-by-step explanation:
Given that you have to find the amount of T-shirts that should be sold to earn a profit of more than $2,000, you have to find the amount required to earn $2,000 by replacing p with 2,000 and solving for s:
s^2+9s-142=2000
s^2+9s-2142=0
(s+)^2-2142-()^2=0
(s+)^2=2142+()^2
(s+)^2=2142+
(s+)^2=
s+=
s=
s=
s=
s=42
According to this, Reyna needs to sell more than 42 T-shirts to earn a profit of more than $2,000.