Answer:
opening the bracket, the expression becomes
12x^2-28-19x^2
collect like terms
12x2-19x^2-28
-7x^2-28
-7(x^2+4)
Answer:7
Step-by-step explanation:
This question is on the ukmt junior maths challenge which I'm doing now, out of the options given I got 7, because 2+4+6+5+(5×20)+(7×7)= 166, (then dividing that by the number of numbers to get the mean) so 166÷31= 5.354.....
Also the 3 has a recurring symbol above it
The 7 is times seven so uh yeah<3
Answer:
68,443,507,502
Step-by-step explanation:
<span>3 ∙ 2x = 6x
so </span><span>coefficient = 6
</span>
hope it helps
Answer:

Now we can use the value for 1994 and we can find the intercept like this:

And solving for b we got:

So then oir model would be given by:

Option C
Step-by-step explanation:
For this case we want to create a linear function for the the value of the investment in the vear x, where x =0 represents 1994.
We know that for 1994 (x= 0) the value is y = $3733 and for 1997 (x=3) the value of y = $5425
We want to find a model given by:

Where m is the slope and b the intercept. We can find the slope with this formula:

Now we can use the value for 1994 and we can find the intercept like this:

And solving for b we got:

So then oir model would be given by:

Option C