10x + 3y = 19
y = 2x + 5
Putting y in the first equation
10x + 3.(2x + 5) = 19
10x + 6x + 15 = 19
16x = 19 - 15
16x = 4
x = 4/16
x = 1/4
Now x in y
y = 2x + 5
y = 2.1/4 + 5
y = 2/4 + 5
y = 1/2 + 5
y = 11/2
Answer:
414 - 223
= 191
Step-by-step explanation:
414-223 = 191 he has 191 paint left
to check the answer we do
191 + 223 = 414 our answer is correct
Answer:
The author sold a total of 30240 books following this trend.
Step-by-step explanation:
<em>Let's find 5% of 14400 first;</em>
14400 * 5%
14400 * 5/100
144 * 5
720 (So now we know that they are decreasing by 720 each month; therefore thats the constant)
<em>=> aₙ = a₁ + r(n - 1)</em>
=> a₂₃ = 14400 + 720(23 - 1)
=> a₂₃ = 14400 + 720(22)
=> a₂₃ = 14400 + 15840
<u>=> a₂₃ = 30240</u>
Hope this helps!
Answer:
x=67
Step-by-step explanation:
chicken <3