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3 years ago

For which values of x will the rational expression below be undefined? Check

Mathematics

1 answer:

ololo11 [35]3 years ago

3 0

Answer:

-2

Step-by-step explanation:

For the given expression to be undefined, this means that the denominator must be zero.

From the given expression, the denominator is x + 2

Equating this to zero;

x+2 = 0

Subtract 2 from both sides

x+2-2 = 0 -2

x = -2

Hence the value of x that makes it undefined is -2

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The experimental probability of a coin landing on heads is 7/12. If the coin landed on tails 30 times, find the number of tosses

nordsb [41]

Answer: 72 tosses

Explanation: If the probability of landing heads is 7/12, the probability of landing tails is 5/12. So then you do cross multiplication, where you multiply the 12 and the 30, equalling 360. Then divide that by 5, equalling 72.

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4 years ago

A quadrilateral has vertices (-5,0), (2,8), (4,-5) and (7,3). Which matrix is the coordinate matrix for the given quadrilateral?

Anuta_ua [19.1K]

(-5, 2, 4, 7)
0 8 -5 3

The co-ordinates are just rewritten in form of a column vector. This gives a matrix of order <span>2x4</span>

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3 years ago

Read 2 more answers

On the stock market four companies had a price change of 5/8, -0.25 -1/8 and 1.5 is the -1/8 the smallest price change of the fo

JulijaS [17]

Given:

Price change of four companies $\dfrac{5}{8},-0.25,-\dfrac{1}{8}\text{ and }1.5$ .

To find:

Smallest price change of the four companies.

Solution:

We have price change of four companies as $\dfrac{5}{8},-0.25,-\dfrac{1}{8}\text{ and }1.5$ .

Here negative sign represents the decrease in stock market price.

Price change can either positive or negative. So, we need to find the absolute value of each price change.

$\left|\dfrac{5}{8}\right|=0.625$

$|-0.25|=0.25$

$\left|-\dfrac{1}{8}\right|=0.125$

$|1.5|=1.5$

Arrange these values in increasing order.

$0.125$

Now,

Price changes in ascending order is

$-\dfrac{1}{8},-0.25,\dfrac{5}{8},\text{ and }1.5$

Hence, -1/8 the smallest price change of the four companies.

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3 years ago

Which equation it equivalent to 3r=78+14

bezimeni [28]

Answer:

A. $3r-14=78$

Step-by-step explanation:

We are given the equation

$3r=78+14$

If we subtract 14 from each side we get

$3r=78+14\\\\3r-14=78$

This is what is shown in answer A

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4 years ago

Round 4,615 to the nearest thousand

satela [25.4K]

Answer: 5,000

Step-by-step explanation: Take the number 4,615 no the rule for rounding any digit is 5 and above give it a shove aka round up 4 and below let it rest or round down go to the digit before the number you are rounding the 6 now six is above 5 so you will round this up now to round it up it will be ten so leave the 0 and carry the 1 over to the 4 add it and you will get your answer and lastly all digits to the right of the place you are rounding make them 0s.

6 0

2 years ago

Read 2 more answers