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4 years ago

Need help with this question

Mathematics

1 answer:

kumpel [21]4 years ago

6 0

Answer:

Step-by-step explanation:

The problem wants you to PLUG IN x into the correct equation.

1) f(-1) means -1 equals x

f(3) means 3 equals x

For example g(9) means 9 = x and f(3/5) means 3/5 = x and so on.

2) Now that you know x equals two numbers -1 and 3 you have to plug them into a equation.

3) Which equation do you plug it in you may ask? You must plug in -1 into x^2 +3 BECAUSE the condition next to it says you can only plug in numbers to x^2+3 greater than or equal to -1 and less than 2. Therefore, you can plug in -1 to this equation.

-1^2 +3 = 4

4) Now you have the number 3. Where do you think we should plug #3 into? Well you can plug it in to the first equation because the condition only allows numbers less then -1. the only option is the last one!!

1, for x >= 2 because 3 is certainly bigger than 2.

This means any number greater than or equal to 2 has to be 1.

SO OUR ANSWER IS 4 AND 1

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Answer:

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Step-by-step explanation:

Amount earned washes dishes = 12 dollars / hour

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100 cents = $1

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Hence, to make $30 from washing dishes :

$12 = 1 hour

$30 = x

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x = 2.5 hours

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2.5 hours = (2.5 * 60) = 150 minutes

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3 years ago

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Snezhnost [94]

The question has missing details. However, general questions that could be asked is as follows:

(1) The number of miles traveled after using (say) 5 gallons

(2) The number of gallons used after traveling for (say) 36 miles

Answer:

See Explanation

Step-by-step explanation:

Given

$s = 120 - 12r$

A linear equation is represented as:

$y = c + mx$

Where

$c =y\ intercept$ and

$m = slope.$

c, in this question represents the initial capacity of the tank.

So, the initial capacity is 120 liters

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$s = 60$

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Solving (b): s = 36

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$36 = 120 - 2r$

Collect like terms

$2r =120 -36$

$2r =84$

Solve for r

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3 years ago

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Step-by-step explanation: Khan Academy

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3 years ago

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Answer:

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