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trasher [3.6K]
3 years ago
13

If f(x) is an even function and f(3)=5 then what is the value of 4f(3)+2f(-3)?

Mathematics
1 answer:
Gwar [14]3 years ago
6 0

Answer:

4f(3)+2f(-3)=30

Step-by-step explanation:

We have been given that f(x) is an even function and f(3)=5. We are asked to find the value of 4f(3)+2f(-3).

Since we know that graph of an even function is symmetric with respect to y-axis. By the definition of an even function, a function f is even if and only if f(-x)=f(x) for all x in the domain of f.  

Since we have been given that f(x) is an even function, so f(3)=f(-3).

Upon substituting our given values we will get,

4f(3)+2f(-3)=4*5+2*5

4f(3)+2f(-3)=20+10

4f(3)+2f(-3)=30

Therefore, the value of 4f(3)+2f(-3) will be 30.

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The sum of the angle measures of a polygon with n sides is 18001800. find n.
Contact [7]
Using
(n-2)180 = 18001800
(n-2) = 18001800÷180
n-2 = 100010
n = 100010+2
n= 100012 sides
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3 years ago
Total amount if $500 is invested at 4% compounded annually for 10 years
ycow [4]
P(10) = P(2.7183) ^ 0.04 times 10
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3 years ago
amanda read 15 pages of her 150-page book in 2 hours. At this rate, how long will it take her to read the entire book?
irina [24]
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7 0
3 years ago
Read 2 more answers
What the correct answer now fast
netineya [11]

Answer:

112.065

Step-by-step explanation:

so divide the triangle in two from x to wy

and you get to triangles

then using the first right angled triangle you can apply tan=opposite/adjacent

to get height as 7.56 then apply 1/2bh to get first area as 58.59

first add all angles and subtract from 180=24

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then apply 1/2bh to get second area as 53.48

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6 0
3 years ago
Which statement correctly compares the mean number of students for the data in the plots?
satela [25.4K]

Answer:

<em><u>"There are about 2 more students in each class at Oak Middle School than at Poplar Middle School."</u></em>

Step-by-step explanation:

We need to compute the mean for each.

<u>Poplar Middle School:</u>

Lets list the numbers

20,20,20,21,21,21,21,21,22,22,22,22,22,22,22,23,23,23,23,24

The average is sum of all divided by number of numbers, that will be:

435/20 = 21.75

<u>Oak Middle School:</u>

The numbers are:

20,21,21,22,22,23,23,23,23,24,24,24,25,25,26,26,27,27,28,29

The average is sum divided by number of numbers, that will be:

483/20 = 24.15

The difference in mean is:

24.15 - 21.75 = 2.4

We can say, that is about 2 more students in Oak Middle School, correct answer choice is "2nd answer choice" - <em><u>"There are about 2 more students in each class at Oak Middle School than at Poplar Middle School."</u></em>

7 0
3 years ago
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