All categories

3 years ago

X+x+x+x-20 what expression is equivalent to it?

Mathematics

2 answers:

igor_vitrenko [27]3 years ago

5 0

X + x + x + x - 20 is equivalent to 4x - 20 because you can add the like terms, or the x's.

Gre4nikov [31]3 years ago

3 0

That would be x to the fourth power -20

You might be interested in

Is square root of 4 rational or irrational

lidiya [134]

Answer:

Rational

Step-by-step explanation:

√4 asks "what times itself is 4?"

The answer is 2.

2x2=4

√4 = 2

2 is rational.

6 0

2 years ago

Read 2 more answers

Determine all possibilities for the solution set of a system of 2 equations in 2 unknowns. I. No solutions whatsoever. II. One a

Minchanka [31]

Answer:

II. One and only one solution

Step-by-step explanation:

Determine all possibilities for the solution set of a system of 2 equations in 2 unknowns. I. No solutions whatsoever. II. One and only one solution. III. Many solutions.

Let assume the equation is given as;

x + 3y = 11 .... 1

x - y = -1 ....2

Using elimination method

Subtract equation 1 from 2

(x-x) + 3y-y = 11-(-1)

0+2y = 11+1

2y = 12

y = 12/2

y = 6

Substitute y = 6 into equation 2:

x-y = -1

x - 6 = -1

x = -1 + 6

x = 5

Hence the solution (x, y) is (5, 6)

Hence we can say the equation has One and only one solution since we have just a value for x and y

4 0

3 years ago

Please help me first thinks

katrin2010 [14]

Answer:

3 minutes

5 minutes.

Step-by-step explanation:

It is given that, Amelia can wash 8 plates in 24 minutes.

So, if this rate remains constant then 1 plate will be washed in $\frac{24}{8} = 3$ minutes.

Again, it is given that, Amelia bakes 12 cookies in 60 minutes.

So, if this rate also remains constant then she will bake 1 cookie in $\frac{60}{12} = 5$ minutes. ( Answer )

7 0

3 years ago

If m(x) =x+5/x-1 and n(x) =x-3 which function has the same domain as (m.n)(x)

Travka [436]

Answer:

Step-by-step explanation:

m (x) = (x+ 5) / (x -1) and n(x) = x - 3.

$m(x) = \dfrac{x+5}{x-1}$

Hence

$m(n) = \dfrac{n+5}{n-1}$

but n is a function and n = x-3. Now, replace value of n on m (n)

$(m(n))= \dfrac{(x-3)+5}{(x-3)-1}$

simplify it

$(m\bullet n)(x) =\dfrac{x+2}{x-4}\\$

since (m . n) (x) is a fraction function, its domain will be all x such that the denominator is NOT 0. That is

$x-4\ne 0\rightarrow x\ne 4$

among options, only C has the same denominator with $(m\bullet n)(x)$

Hence their domains are the same.

4 0

3 years ago

Find the average. 11,16,15,22 A.64 B.15 C.17 D.16

Artemon [7]

Your answer is D)16. To find the average, add up all the numbers and divivde by the number of numbers there is

7 0

3 years ago

Read 2 more answers