The vertex and the t-intercept where t>0, will help solve this problem. Sending the work on the attachment.
If is valid : a ²- b ² = 117 and a - b = 3, then what is the value of the expression a + b ?
1 answer:
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Answer:
13. 5 minutes
Step-by-step explanation:
This is a simple proportion problem. Make two fractions where one item is always on the top and the other on the bottom.
Now, cross multiply (multiply the two numbers diagonal from each other and divide the diagonal with the x value)
576 x 3 = 1, 728
1, 728 / 128 = 13.5