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lara [203]
3 years ago
5

1/2r−3=3(4−3/2r) plzzzzzzz help!

Mathematics
1 answer:
LUCKY_DIMON [66]3 years ago
4 0
Answer:
r= 3

Explanation:
1. Write the division as a fraction
1/2r-3=3(4-3/2r)

2.Distribute the 3 through the paranthesis
1/2r-3=12-9/2r

3.Multiply both sides by 2
r-6=24-9r

4. Swap -6 and -9 together by changing their signs
r+9r= 24+6

5.Add them together
10r=30

6. Divide both sides by 10
r=10

Hope this helped :)
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Answer:

A. On the first day, 3 leaves fall.

B. D. The number of leaves that fall on a given day is 2 times the number of leaves that fell on the previous day.

Step-by-step explanation:

Given

f(n) = 3(2)^n

Solving (a) The meaning of 3.

3 represents the initial number of leaves (i.e. the first day) and this proved as follows.

On the first day, n = 0.

Substitute 0 for n in f(n) = 3(2)^n

f(0) = 3(2)^0

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Solving (b) The meaning of 2.

2 represents the rate which leaves fall down.

In (a)

f(0) = 3

Take n = 1

Substitute 1 for n in f(n) = 3(2)^n

f(1) = 3(2)^1

f(1) = 3*2

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iogann1982 [59]

<u>M</u><u>e</u><u>t</u><u>h</u><u>o</u><u>d</u><u> </u><u>1</u><u> </u><u>:</u>

replace x and y by their value 1 and 3

3 = 4(1) - 1 = 4-1 = 3

2(1) + 3 = 2 + 3 = 5

correct

<u>M</u><u>e</u><u>t</u><u>h</u><u>o</u><u>d</u><u> </u><u>2</u><u> </u><u>:</u>

y = 4x - 1

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