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3 years ago

Find the value of the variable that makes rational expression undefined. 3x/x-3

1 answer:

7 0

X cannot equal to zero. So if you substitute 3 it’ll make 3-3 which equals to 0. If you divide in a fraction anything by zero the answer will be undefined. So 3x/0 is undefined. So the value that you are looking for is 3. Remember if you have a fraction, the bottom (denominator) cannot be 0. You can’t divide the top by zero. In your calculator it’ll either say error or undefined

Please mark as a brainliest it will be much appreciated

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if you subtract the least integer from the greatest integer and divide the difference by 3 the quotient is 5

vodomira [7]

Let a and b be integers and b>a, then we can say:

(b-a)/3=5 now multiply both sides by 3

b-a=15

b=15+a

So there are infinitely many pairs of integers that satisfy the conditions given in the problem. For any value a, b will be 15 units greater.

7 0

3 years ago

How much money does he have

Andrej [43]

C $1.00

because 1/3 of 15 coins are 5 dimes

15 - 5 = 10 nickels

10 + 5 = 15 coins.

5 dimes= .50 cents

10 nickels= . 50 cents

.50 + .50 = $1.00

$1.00 is C.

*Hope this helped :)

7 0

3 years ago

Read 2 more answers

If y = 3x and 2x + 4y = 12, then 2x + 4(3x) = 12

Kamila [148]

Answer:

x=6/7 and y=18/7

Step-by-step explanation:

If y = 3x and 2x + 4y = 12,

then substitute the value of y with 3x

2x + 4(3x) = 12

2x+12x=12

14x=12

x=12/14=6/7

y=3x=3*(6/7)=18/7

6 0

4 years ago

A soccer ball is kicked from the ground at an upwards velocity of 90 feet per second. The equation h(t)=-16t^(2)+90t gives the h

garri49 [273]

Answer: 2.81 s

Step-by-step explanation:

Given

Ball is kicked upward with velocity $u=90\ ft/s$

Height of the ball is given by the function $h(t)=-16t^2+90t$

Derivative of a function gives the maxima or minima at certain point

$\Rightarrow \dfrac{dh}{dt}=-32t+90\\\\\Rightarrow \dfrac{dh}{dt}=0\\\\\Rightarrow -32t+90=0\\\\\Rightarrow t=\dfrac{90}{32}\\\\\Rightarrow t=2.81\ s$

Thus, it takes ball 2.81 s to reach the top.

5 0

4 years ago

How to do this and I need help pls

tatuchka [14]

Answer:

$9$

Step-by-step explanation:

$f(x) = (x - 2)^{2} \\ f(5) = (5 - 2)^{2} \\ f(5) = {(3)}^{2} \\ f(5) = 3 \times 3 \\ f(5) = 9$

7 0

3 years ago