X = $ 10 dvd's.....y = $ 12 dvd's
x + y = 200....x = 200 - y
10x + 12y = 2200
10(200 - y) + 12y = 2200
2000 - 10y + 12y = 2200
-10y + 12y = 2200 - 2000
2y = 200
y = 200/2
y = 100 ....so there were 100 $ 12 dvd's sold
Step by step solution :Step 1 : 103
Simplify ———
7 <span>Equation at the end of step 1 :</span> 92 103
(0 - ——) - (0 - ———)
7 7
<span>Step 2 :</span> 92
Simplify ——
7
<span>Equation at the end of step 2 :</span> 92 -103
(0 - ——) - ————
7 7
<span>Step 3 :</span>Adding fractions which have a common denominator :
<span> 3.1 </span> Adding fractions which have a common denominator
Combine the numerators together, put the sum or difference over the common denominator then reduce to lowest terms if possible:
-92 - (-103) 11
———————————— = ——
7 7
Final result :<span> 11
—— = 1.57143 </span><span>
</span>
There are 4 semicircles, each radius is 8cm, so we get the total areas of these semicircles: 4×0.5×
π
and the square area: 16²
so the total area of figure: 16²+4×0.5×
π=256+128π
You need to first multiply 100 by 42 then divide by 15
Answer:
Domain : All real numbers
Range: y >= 0
Step-by-step explanation:
