Answer:
a⁴ + 20a³ + 150a² + 500a + 625
Step-by-step explanation:
(a + 5)⁴
₄C₀ a⁴ 5⁰ + ₄C₁ a³ 5¹ + ₄C₂ a² 5² + ₄C₃ a¹ 5³ + ₄C₄ a⁰ 5⁴
a⁴ + 4 a³ 5 + 6 a² 25 + 4 a 125 + 625
a⁴ + 20a³ + 150a² + 500a + 625
Answer:
I would need to see what you are talking about
Step-by-step explanation:
Hello :
<span>3t(t+2)-(3t^2+5t) when t=19
3(19)(19+2)-(3(19)²+5(19) =(57)(21)-(1083+95) =1197-1178 =19</span>
Answer:
398-cent stamp for postage.
Step-by-step explanation:
For one letter, Travis needs 37-cent stamp
For four letters, Travis needs 37-cent stamp x 4 letters
= 148-cent
Again,
For one postcard, he needs 25-cent stamp
For ten postcards, he needs 25-cent stamp x 10 postcards
= 250-cent
Therefore, he will spend = (148-cent + 250-cent) = 398-cent stamp for postage.
A + b = 6
a - b = 4
We substract those equations, we get:
2b = 2 (dividing both sides with 2)
b = 1
a = b + 4 (look at second aquations)
= 1 + 4
= 5