<span>Four-ninths of a number is (4/9)x.
</span><span> Twelve more than four-ninths of a number is (4/9)x +12.</span>
790
1) Since it's been given the expression 6x³+8x, let's plug into that the value for x=5
6x³+8x <em>Plug into that x =5</em>
6(5)³+8(5)
6(125) +8(5) <em>Distribute the factors</em>
<em>790</em>
<em />
2) So the answer is 790
<u><em>Answer</em></u><em>:</em>
A is the answer!
<u><em>Step-by-step explanation</em></u><em>:</em>
Trust me, I'm taking this test and got the answer wrong. But! At least I got the answer revealed for ya T-T)
Step-by-step explanation:
Using the kinematics equation,
v = u + at
where v = Final speed = 15m/s
u = Initial Speed = 30m/s
t = time taken = 10 seconds
a = acceleration.
Substitute v , u and t to find a.

Number of possible combinations = (4x3) ÷ 2 = 6
Answer: There are 6 possible combinations.