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3 years ago

Can someone help me on this one pls

Mathematics

2 answers:

sleet_krkn [62]3 years ago

7 0

Answer:

d = 5

Step-by-step explanation:

make x on its own and that would be 5/6

sub x into d = 6x

that would be: d = 6 * 5/6

cancel the 6

and that leaves you with d = 5

frozen [14]3 years ago

3 0

Answer:

d=5

Step-by-step explanation:

6x = 5

d = 6x

if 6x = 5 then d would also equal 5

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Let’s say that x is number of trees at the begging of the first year, we know that for four years the number of trees were incised by 1/4 of the number of trees of the preceding year, so at the end of the first year the number of trees was $x+\frac{1}{4} x=\frac{5}{4} x$ , and for the next three years we have that

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Second year $\frac{5}{4}x$ -------------- $\frac{5}{4}x+\frac{1}{4}(\frac{5}{4}x) =\frac{5}{4}x+ \frac{5}{16}x=\frac{25}{16}x=(\frac{5}{4} )^{2}x$

Third year $(\frac{5}{4} )^{2}x$ ------------- $(\frac{5}{4})^{2}x+\frac{1}{4}((\frac{5}{4})^{2}x) =(\frac{5}{4})^{2}x+\frac{5^{2} }{4^{3} } x=(\frac{5}{4})^{3}x$

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Therefore the number of trees at the begging of the 4-year period was 2560.

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