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OverLord2011 [107]
3 years ago
14

The sum of two numbers is 100 and their product is 900.

Mathematics
1 answer:
FinnZ [79.3K]3 years ago
8 0

Answer:

(90,10) (10,90)

Step-by-step explanation:

x+y=100\\xy=900

now solve by substitution

x=100-y

so

xy=(100-y)(y)=900

your answers are: (90,10) (10,90)

Look at the attached image

Hope this helps!

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Online jewelry sales have increased steadily over the last 10 years. In 2003, sales were approximately 2 billion dollars, and in
UNO [17]

Answer:

rate\ of\ increase = 28.8\ billion\ dollars\ per\ year

model: y = 28.8(t-2003) + 2

profit in year 2017: y =  405.2\ billion\ dollars

Step-by-step explanation:

The sales increased from 2 billion dollars to 146 billion dollars in five years, so to find the increase in billion dollars per year, we just need to divide the increase by the amount of time:

rate\ of\ increase = (146 - 2)/5 = 144 / 5 = 28.8\ billion\ dollars\ per\ year

To construct a model for these sales, we can use the year 2003 as the initial point of a linear equation:

y = ax + b

the variable y will represent the profit in billion dollars, the variable x will represent our time, so we can use (t - 2003) in its place to represent the number of years since 2003 (t is the year we want to calculate), the constant 'a' will be our rate of 28.8, and the constant 'b' is the inicial value for the year 2003, that is, 2 (billions). So we have:

y = 28.8(t-2003) + 2

In the year 2017, we would have:

y = 28.8(2017-2003) + 2

y = 28.8*14 + 2

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6 0
3 years ago
Daniels is considering two job offers: a full-time permanent position that pays $78,000 annually and a full-time contract job th
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Answer:

Option B,contract job

Step-by-step explanation:

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gross annual income=$40*40*(53-2)=$81,600

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The gross annual income for full time permanent role is $78,000

As a result,the full time contract job pays more

                   

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Determine whether the relation represents a function. Explain your reasoning.<br> Your answer<br> AY
tigry1 [53]

A relation is a function if each element of the domain is paired with exactly one element of the range. ... If given a table, or a set of ordered pairs, you can look to see if any value of the domain has more than one corresponding value in the range.

tbh google

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Check the picture please if you're good at math!!
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Answer:

A

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