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olga2289 [7]
3 years ago
14

What two numbers multiply to 16 and add to 4?

Mathematics
2 answers:
alukav5142 [94]3 years ago
7 0

You said that (xy) = 16, and (x+y) = 4 .

From the second equation you can get [ x = 4 - y ],
then substitude that for 'x' in the first equation, and
finally, rearrange the first equation to read
                                                                   <u>x² - 4x + 16 = 0</u>

Don't even try to factor that quadratic equation.  Go straight
to the quadratic formula, and the two solutions you find are ...

         <em>x = 2 + i 2√3</em>
and
         <em>x = 2 - i 2√3</em> .

Those are the two number that do what you want.

There are no <u>real</u> numbers that can do it.


Brilliant_brown [7]3 years ago
6 0
Xy=16               
 x + y = 4
-----------------

Solve those two equations for x and y.

The two numbers are:  2 - 2i sqr(3) and  2 + 2i sqr(3)


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X/3/8 = 24<br> put answer as whole number
rewona [7]

Answer:

9 = x

Step-by-step explanation:

24 = \frac{x}{\frac{3}{8}} \\ \\ [24][\frac{3}{8}] = \frac{72}{8} = 9 \\ \\ 9 = x

I am joyous to assist you anytime.

8 0
3 years ago
Help me for all these
ad-work [718]
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5 0
3 years ago
Over the course of a multi-stage 4510-km bicycle race, the front wheel of an athlete's bicycle makes 1.70x106 revolutions. How m
iragen [17]

Answer:

The wheel have made 2.10 * 10^{6}  m revolutions.

Step-by-step explanation:

The total distance traveled during the race is

D = 4510km [(1000m)/(1km)] = 4510 * 10^{3} m

The radius (r1) of the smaller bicycle wheel is

r1 = \frac{D}{2*pi*N1} = \frac{4510 * 10^{3} m }{2*pi*(2.18*10^{6}) } =0.329 m

Than the larger wheel has a radius

r2 = 0.329 m + 0.012 m = 0.341 m

Over the same distance this wheel would make N2 revolutions

N2 = \frac{D}{2*pi*r2} = \frac{4510 * 10^{3} m }{2*pi*(0.341) } = 2.10 * 10^{6}  m

8 0
3 years ago
Which number is equivalent to –(–2)? A. –2 B. 0 C. 2 D. 4
ZanzabumX [31]

Answer: The answer is C. 2

Step-by-step explanation:

6 0
4 years ago
Read 2 more answers
Which of the following best describes the relationship between (x-3) and the polynomial x^3+4x^2+2?
Anna71 [15]
This is the concept of polynomials, to get the relationship between the (x-3) and (x^3+4x^2+2) we shall proceed as follows;
we first test if (x-3) is a polynomial;
x-3=0
thus;
x=3
substituting the value of x in the polynomial we get:
(3)^3+4(3)^2+2
=65
since the result is not equal to 0, we conclude that there is no relationship between (x-3) and the polynomial. The answer is B. (X-3) is not a factor
7 0
3 years ago
Read 2 more answers
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