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3 years ago

A tree that grows 3 feet every 5 years is growing at a rate of ___ feet per year. A.0.6 B.15 C.60

Mathematics

2 answers:

Sunny_sXe [5.5K]3 years ago

8 0

Answer:

The correct option is A. 0.6

Step-by-step explanation:

Given,

Growth of the tree in 5 years = 3 feet,

So, the growth in 1 year = $\frac{1}{5}$ × Growth of the tree in 5 years

$=\frac{1}{5}\times 3$

$=0.6\text{ feet}$

Hence, the rate of growing the tree is 0.6 feet per year.

i.e. OPTION A is correct.

sammy [17]3 years ago

7 0

A.0.6
0.6*5yrs=3feet a year

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3 years ago

Part A: Joel uses the incorrect expression 0.95(190)(0.8) to calculate that the computer will cost him a total of $144.40. Descr

notka56 [123]

Answer:

Part A) The correct Expression : (1.05)(190)(0.8)

=> The error of Joel was that instead of adding the sales tax, he subtracted it.

Part B) $159.60

Step-by-step explanation:

Part A:

To calculate the computer cost, we need to find out the selling price first.

There's a discount of 20% so the selling price will be 100% - 20% = 80% =>80/100 = 0.8

So, We'll multiply the cost price by 0.8

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But, there is a sales tax of 5%

So, the selling price with cost price will be:

=> 100% + 5% = 105% => 105/100 = 1.05 (We'll multiply this too with the first equation that we made above)

So, the expression will be:

=> (1.05)(190)(0.8)

The error of Joel was that instead of adding the sales tax, he subtracted it.

Part B)

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=> (1.05)(190)(0.8) [We used the above expression]

=> $159.60

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