Answer:
C) Three real roots, two of which are equal in value is the right answer I believe.
Step-by-step explanation:
The slope-intercept form:
m - slope
b - y-intercept
We have the slope
and point (9, 7). Substitute:
<em>subtract 3 from both sides</em>
Answer:
Answer:
y equals negative four x plus 9
9514 1404 393
Answer:
- A + B = 389
- A - B = 263
- A = 326 tons
- B = 63 tons
Step-by-step explanation:
The first equation is an expression of the first given relationship:
A + B = 389 . . . . . . where A and B represents trains weights, respectively
The second equation is an expression of the relationship described in the next two sentences:
A - B = 263
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These equations can be solved by adding them together:
(A +B) +(A -B) = 389 +263
2A = 652 . . . . . . simplify
A = 326 . . . . . . . .divide by 2*
B = 326 -263 = 63
Train A weighs 326 tons.
Train B weighs 63 tons.
_____
* You may notice that this value is the average of the given sum and difference. That observation is true of all "sum and difference" problems.
Answer:
I got B or number 2
Step-by-step explanation: