Answer:
20 units²
Step-by-step explanation:
The x-intercepts are symmetrically located around the x-coordinate of the vertex, so are at
1.5 ± 5/2 = {-1, 4}
Using one of these we can find the unknown parameter "a" in the parabola's equation (in vertex form) ...
0 = a(4 -1.5)² +12.5
0 = 6.25a +12.5 . . . . . simplify
0 = a +2 . . . . . . . . . . . divide by 6.25
-2 = a
Then the standard-form equation of the parabola is ...
y = -2(x -1.5)² +12.5 = -2(x² -3x +2.25) +12.5
y = -2x² +6x +8
This tells us the y-intercept is 8. Then the relevant triangle has a base of 5 units and a height of 8. Its area is given by the formula ...
A = (1/2)bh = (1/2)(5)(8) = 20 . . . . units²
-24 = a-15 Combine Like Terms
9 = a Add 15 to both sides to get the value of a
If you're saying that a×b=c, and a and b are the same number, then you need to find the square root of 60, or a number that will equal 60 when multiplied together since c=60. 60 is not a perfect square, but 7 squared is 49 and 8 squared is 64. So, the answer is going to be 7.something. If you √60 into a calculator, you get 7.74597. The five rounds up the four in the hundredths place, so the square root of 60 is about 7.75
Hope this helps!
Answer:
shut up coward
Step-by-step explanation:
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1. -1.75x
2. -3.7
3. divide 2x by two = 1x or just x
4. then divide -2 by 2 and
Answer: x= -1