Mathematics
29.12.2022 01:55
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Let a = -2.5, b = -4.1, c = 7.8, and d = 3.2 6. evaluate (a + b) / (c – d) the final

Let a = -2.5, b = -4.1, c = 7.8, and d = 3.2
6. evaluate (a + b) / (c – d)
the final answer should have no decimals in the numerator, denominator, or final answer. (hint: multiply the top and bottom of your fraction answer by 10, then simplify the fraction.)
7. evaluate (b + d)2/a - c
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katykatmeelee
katykatmeelee
4,7(90 marks)

B. 2.4 weeks

Step-by-step explanation:

The equations for the growth rate of the plants are given by,

Plant A: y = 1.8x + 3.1

Plant B: y =2.3x + 1.9,

where y = height of the plants (in inches) and x = time (in weeks).

It is required to find the number of weeks after which the plants reach the same height.

As, the plants will reach the same height. So, we get,

1.8x + 3.1=2.3x + 1.9

i.e. 0.5x=1.2

i.e. x = 2.4

Hence, after 2.4 weeks, the height of both the plants will be the same.

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