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Vlada [557]
2 years ago
12

F(x) = -2 and g(x) = 2x² + x-3, find (f +g)(x) .

Mathematics
1 answer:
tekilochka [14]2 years ago
8 0

Answer:

2x^2 + x - 5

Step-by-step explanation:

(f+g)(x)=f(x)+g(x)=-2+2x^2 + x-3=<u>2x</u><u>^</u><u>2</u><u> </u><u>+</u><u> </u><u>x</u><u> </u><u>-</u><u> </u><u>5</u>

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Answer:

A, C, D

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3 years ago
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The product of two positive integers is 176. One number is 5 more than the other. Find the smaller number.
svlad2 [7]

Hello from MrBillDoesMath!

Answer:

11



Discussion:

Let "n" be the smaller number. Then

n * (n+5) = 176.


My first reaction to this problem was to factor 176 in my head. That's  176 = 16 * 11 and 16 is 5 more than 11. So that's the solution!.... Now let's solve it using the brute force approach:

n(n+5) = 176                 =>

n^2 + 5n - 176 = 0       => use the quadratic formula


n =     ( -5 +\- sqrt( 5^2 - 4(1)(-176)) )  /2

 =     ( -5 +\- sqrt( 25 +  704) )/ 2

=     ( -5 +\- sqrt (729) ) /2                            => as sqrt(729) = 27

=      (-5 +\- 27) / 2                                        =>

=      (-5 + 27)/2 or ( -5 -27)/2                      =>

=      22/2  or  -32/2                                     =>

=      11 or  -16


But -16 is not allowed as the question wants a positive value.



Thank you,

MrB

4 0
3 years ago
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Use your calculator to select the best answer below:
bixtya [17]

Answer:

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Step-by-step explanation:

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6 0
3 years ago
Approximate the real zeros of f(x) = x2 + 3x + 1 to the nearest tenth
pshichka [43]

Approximate the real zeros of f(x) = x2 + 3x + 1 to the nearest tenth

<u>C. 2.6,-0.4</u>

<u />

5 0
3 years ago
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#2 pls help I don’t know how to do math
Ira Lisetskai [31]

Answer:

3

Step-by-step explanation:

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