Ion 1 of 205.0 points

simplify the sum.

(2u3 + 6u2 + 3) + (2u3 – 7u + 6)

a. 9 – 7u + 6u2 + 4u3

b. 0u3 + 6u2 – 7u + 9

c. 0u3 – 7u2 + 6u – 9

d. 4u3 + 6u2 – 7u + 9

21

step-by-step explanation:

step-by-step explanation:

the 8 in 8,420 is in the thousands place so it's value is 8 thousand.

the 8 in 6,870 is in the hundreds place so it's value is 8 hundred.

divide 8000 by 800 to find the answer:

8000 / 800 = 10

the 8 in 8,420 is 10 times greater than the 8 in 6,870

step-by-step explanation: given equation a = h(b 1+b 2)

also we are given values of a, h and b 1 as :

a = 16, h = 4, and b 1 = 3.

in order to solve it for b 2, we need to plug the given values of   a, h and b 1 .

therefore, plugging values of   a, h and b 1   in given equation, we get

16 = 4( 3 + b 2)

first dividing both sides by 4, we get

4 = 3 + b 2

subtracting 3 from both sides, we get

4 -3 = 3 -3 + b 2

1 = b 2.