: 1) If you were going to solve these, you would set them up like this.
s+p=19
7s+10p=121
among the choices, b is the only one that is equivalent to one of these equations
2) The problem looks a little confusing. If the price is per box then they easily make $275.
8b+9h=53
20*8b+30*9h=275
If it's per batch, the answer is B.
3. x^2+y^2=16
y=x+4
solve the first equation for y
y=√16-x^2
x+4=√16-x^2
(x+4)^2=16-x^2
x^2+8x+16=16-x^2
2x^2+8x=0
2x(x+4)=0
x=0 or x=-4
(be carefull i copyed and pasted the answer)
Answer:
90 minutes or 1 hour and 30 minutes
Step-by-step explanation:
If 18 minutes is 20% of the work time then you will have to get the 20% to 100% so i divided 20 by 100 and that got me 5 so I put 5 times 18 then that got me 90.
<span>56,000,000==
5.6*10^7
</span>
Answer:
Option (C) is correct.
The solution of the quadratic equation 
is 
and 
Step-by-step explanation:
Consider the given quadratic equation
We can solve the quadratic equation using middle term splitting method,
11x can be written as 15x-4x , we get,
Taking terms common, we get,
Thus, 
Thus, we get 
or 
this gives 
or 
Thus, the solution of the quadratic equation is and
1. Combine like terms.
Now divide both sides by 4 to get:
