Hello:
<span>3x-5y=10 .... (1)
-3x-4y=35 ..... (2)
</span><span>using addition method (1)+(2) :-9y=45 y=-6
</span>subst in (1) : 3x-5(-6)=10
3x=40
x=40/3
1 sheet can contain 3 drawings. So 7 x 3 = 21.
21 drawings in total.
Step-by-step explanation:
5B+4F= $30.76
×3
15B+12F= $92.28
----------------------------
8B+6F= $48.28
×2
16B+12F= $96.56
----------------------------
Cost of one burger:
$97.56-$92.28= $4.28 (final ans)
Cost of one fries:
$30.76-5($4.28)= $9.36 (for 5 fries)
$9.36÷5= $1.87 (final ans)
Answer:
B
Step-by-step explanation:
This is a positive anotation.
Hope this helps have a good day!
Let's call the two numbers x and y. We can write a system of equations to describe the situation:
5x = 8y
x - y = 150
Let's solve the first equation for x:
x = 8y/5
Now we can use substitution to solve the system by plugging 8y/5 in for x in the second equation:
(8y/5) - y = 150
Simplify:
3y/5 = 150
3y = 750
y = 250
If y = 250, then x is:
x = 8(250)/5 = 400
The answer is 250 and 400.
