Answer: Distributive.
Step-by-step explanation: Using the distributive property, you would expand the equation to 56 + 42x.
AC is perpendicular to BD
so
3x + 9 = 90
3x = 81
x = 27
answer
x = 27
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in case if you need to find y
2x + y = 90
2(27) + y = 90
54 + y = 90
y = 90 - 54
y = 36
Answer:
T=48
Step-by-step explanation:
Now since I don’t know the height at the present moment, I’ll just make this ratio (of the tree) be represented as x/36. Which is saying that for every ‘x’ amount of feet, there will be 36 feet of shadow.
so we have 4/3=x/36. If I cross multiply 36 and 4, then divide the product by 3, then ‘x’ will be 48.
Y = (7x - 2x)(5x + 2)
y = 5x(5x + 2)
y = 5x(5x) + 5x(2)
y = 25x² + 10x