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Maurinko [17]
2 years ago
12

A tree that is 4 ft tall is growing at a rate of 1 ft each year a tree that is 12 feet tall is growing at a rate of 1/2 ft each

year how many years will it take the two trees to reach the same height
Mathematics
1 answer:
Andreyy892 years ago
5 0

Answer:

16 years

Step-by-step explanation:

Given data

For the first tree

let the expression for the height be

y=4+x--------------1

where y= the total height

          4= the initial height

          x= the number of years

For the second tree, the expression is

y=12+0.5x-------------2

Equate 1 and 2

4+x=12+0.5x

x-0.5x=12-4

0.5x= 8

x= 8/0.5

x=16

Hence it will take 16 years for both trees to have the same height

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2 years ago
The owner of two hotels is ordering towels. He bought 15 hand towels and 43 bath towels for his hotel in Livingston, spending a
coldgirl [10]

Answer:

The cost of each Hand towels is $5 and Cost of each Bath towel is $11.

Step-by-step explanation:

Let the Cost of Each hand Towels be 'x'.

Let the Cost of Each Bath Towels be 'y'.

Now Given:

15 hand towels and 43 bath towels for his hotel in Livingston, spending a total of $548.

So we can say that;

15x+43y=548

15x=548-43y\\\\x=\frac{548-43y}{15}  ⇒ Equation 1

Also Given:

99 hand towels and 62 bath towels for his hotel in Lancaster, spending $1,177.

So we can say that;

99x+62y =1177  ⇒ Equation 2

Substituting the value of 'x' from equation 1 in Equation 2 we get;

99\frac{(548-43y)}{15}+62y=1177\\\\33\frac{(548-43y)}5+62y=1177\\\\\frac{18084-1419y}5+62y=1177

Now taking LCM to make the denominator common we get;

\frac{18084-1419y}5+\frac{62y\times5}{5}=1177\\\\\frac{18084-1419y}5+\frac{310y}5=1177\\\\\frac{18084-1419y+310y}{5}=1177

18084-1109y=1177\times5\\\\18084-1109y=5885

Combining the like terms we get;

18084-5885=1109y\\\\12199=1109y

Dividing both side by 1109 we get;

\frac{12199}{1109}=\frac{1109y}{1109}\\\\y=\$11

Substituting the value of y in equation 1 we get;

x=\frac{548-43y}{15}=\frac{548-43\times11}{15}=\$5

Hence The cost of each Hand towels is $5 and Cost of each Bath towel is $11.

7 0
3 years ago
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