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faltersainse [42]
4 years ago
5

Below two situations are described in words. In each case, decide

Mathematics
1 answer:
irina [24]4 years ago
4 0

(a)

If by "age in years" you mean that you only consider whole years, then this is not a one-to-one function, because you will have the same output for 365 inputs:

  • If you're 0 to 364 days old, your age in years is 0
  • If you're 365 to 729 days old, your age in years is 1
  • ....

So, you can see that it is not true that every different input yields a different output.

(b)

This is a one-to-one function: since one mile is 1.609 kilometers, you can convert miles per hour into kilometers per hour by multiplying by 1.609:

x mph = 1.609x km/h

The inverse function would be

x km/h = x/1.609 mph.

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Luanda wants to buy a box of cereal. Which box has the lowest cost per ounce? Group of answer choices 20-oz box for $3.20 10-oz
marin [14]

Answer: 15-oz for 2.25

3.20÷20= 0.16

1.70÷10= 0.17

2.25÷15= 0.15

2.72÷16= 0.17

I hope this helps:

3 0
3 years ago
Two numbers have a sum of 32. One number is 6 more than the other. Find the numbers
Vlad [161]
<h2>Answer: 13 & 19</h2>

<h3>Step-by-step explanation:</h3>

Let the bigger number be 'U' and the smaller number 't'.

Since the two numbers have a sum of 32, then   U + t = 32.

& since one number is 6 more than the other, the U - 6 = t

⇒ U + U - 6 = 32

             2U = 38

                U = 19

By substituting fot the value of U we found,

19 - 6 = t

      t  = 13

<h3>∴ the numbers are 13 & 19.</h3>
5 0
3 years ago
Read 2 more answers
Estimate the value of the irrational number (0.6289731...)2. Up to how many decimal digits is the estimation correct? 4 5 6 7
Salsk061 [2.6K]

Answer:

7 decimal digits

Step-by-step explanation:

Because it ws rounded up to 0.6289731

and the known digits after the decimal are 7 in numbers.

0.6290 ......4 decimal digits

0.62897..... 5 decimal digits

0.628973.... 6 decimal digits

0.628973 ..... 7 decimal digits

8 0
3 years ago
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A landscaper has 4/5 bag of potting soil to fill some planters.If the landscaper pours 2/15 bag of soil into each planter until
belka [17]

\frac{4}{5}  = \frac{12}{15}
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Landscaper can fill 6 planters
7 0
3 years ago
What is 416.424 rounded to the nearest hundreth
musickatia [10]
416.420 is the answer
4 0
3 years ago
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