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Nata [24]
3 years ago
14

Simplify the rational expression.  State any restrictions on the variable.

Mathematics
1 answer:
AveGali [126]3 years ago
7 0

Answer:

The last choice.

Step-by-step explanation:

\dfrac{k^2-k-2}{k^2-4k-5}=\dfrac{(k+1)(k-2)}{(k+1)(k-5)}=\dfrac{k-2}{k-5}

The value of k must be restricted from being one that makes the original denominator zero. Hence k ≠ -1 or 5.

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Johnny says multiplication always makes numbers bigger. Explain to Johnny why this isn’t true. Give more than one example to hel
yarga [219]

Answer:

Explained

Step-by-step explanation:

No, Multiplication does not always makes number bigger. When number is Multiplied by any number less than 1 the magnitude of the number decreases. Also any number multiplied by a negative number also reduces the number,

Example 5×2= 10 and 5×0.2= 1 clearly , 1<5

also, 5×(-2) = -10 which is also less than 5.

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3 years ago
DETERMINE THE VALUE OF X BASED ON THE IMAGE DOWN BELOW:
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What are the coordinates of the x-intercept(s) of the graph of y=(x-6)(x+5)
MissTica

Answer:

(-5 , 0) and (6 , 0)

Step-by-step explanation:

In order to get the coordinates of the x-intercept(s) of the graph of y=(x-6)(x+5)

we need to solve for x the equation (x-6)(x+5) = 0

(x-6)(x+5) = 0

⇌

x - 6 = 0  or  x + 5 = 0

⇌

x = 6  or  x = -5

therefore

the coordinates are :

(-5 , 0) and (6 , 0)

__________________________

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3 years ago
Solving system of equations with substitution.
JulijaS [17]

Answer:

Hope it helps!

Step-by-step explanation:

Sub y=5x into y=2x+3

so

5x=2x+3

3x=3

x=1

plug x=1 into y=5x

y=5

Checking work

Plug (1,5) into y=2x+3

5=2(1)+3

5=5

Plug (1,5) into y=5x

5=5(1)

5=5

6 0
3 years ago
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