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3 years ago

Evaluate the function for x equals 2: f(x) + 7x - 5

Mathematics

2 answers:

Triss [41]3 years ago

8 0

Answer:

Step-by-step explanation:

replace x = 2 into f(x)=7x-5

f(2)=7(2)-5 = 14 -5 = 9

answer is 9

Ludmilka [50]3 years ago

6 0

For this case, we have a function of the form $y = f (x)$ , where $f (x) = 7x-5$

You want to know the value of the given function when $x = 2$ ,

Then we substitute $x = 2$ in the function:

$f (2) = 7 (2) -5\\f (2) = 14-5\\f (2) = 9$

So, the value of the function is 9 when $x = 2$

Answer:

$f (2) = 9$

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3 years ago

<img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B1.107%7D%7B123%7D%20%20%5Ctimes%20%20%5Cfrac%7B1.998%7D%7B333%7D%20%20%3D%20" id=

pav-90 [236]

Answer:

Step-by-step explanation:

$\frac{1.107}{123} \times \frac{1.998}{333} =$

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3 years ago

Read 2 more answers

In the form of a paragraph, explain in complete sentences, your answers to the following questions. Include the final answer in

Yanka [14]

Lisa is an avid runner and is training for a marathon, so she runs everyday to achieve this purpose. In this way, she goes out to run for six days, so we have the following data set regarding the miles she runs:

1st day = 3.2    miles
2nd day = 7.5   miles
3rd day = 9.8    miles
4th day = 11.5 miles
5th day = 2.9 miles
6th day = 3.5 miles

<span>Finally, she ran a total of:

3.2+7.5+9.8+11.5+2.9+3.5 = 38.4 miles

</span><span>What was the average distance of each run?

This result can be get as the sum of each run (or the </span>total of miles she run<span>) divided by the numbers of days she ran.

</span> $A=\frac{38.4}{6}=6.4mi$

<span>Lisa's goal for this week is to run an average of 6 miles per day. How many miles does she need to run tomorrow (the 7th day) in order to achieve her goal of 6 miles per day for the week?

Let's name x the distance she must run tomorrow. Therefore, the equation for this purpose is given as follows:

</span> $\frac{3.2+7.5+9.8+11.5+2.9+3.5+x}{7}=6$

∴ $\frac{38.4+x}{7}=6$

Isolating x:

$38.4+x=42$

∴ $x=42-38.4=3.6$

Therefore, she need to run:

$\boxed{3.6mi}$ in order to achieve the goal of 6 miles per day.

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3 years ago