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3 years ago

Name the property of real numbers illustrated by the equation.

Mathematics

1 answer:

Elden [556K]3 years ago

3 0

The -2 would be distributed to the x and the 4 making the equation -2x - 8. So, the answer is C.

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1. Maggie keeps track of daily bird sightings. The table below shows the number and type of swans that were seen in one day. Wha

Vitek1552 [10]

Answer:

hello! i just did this problem and the answer is 12.2%

Step-by-step explanation:

first we need to add all of the swans together, then from there you take the amount of mute swans and divide it by the sum of all the swans! finally, multiply by 100 to convert into a percent and round it to 12.2%

hope this helped plz give me brainliest! <3

8 0

2 years ago

Find the sum or different 11/18-1/6

ira [324]

Answer:

4/9

Step-by-step explanation:

11/18-1/6

The first step is to get a common denominator, which is 18. We can multiply 1/6 by 3/3 to get the denominator to 18

11/18 - 1/6 *3/3

11/18 - 3/18

8/18

Now we can simplify the fraction by dividing the top and bottom by 2

4/9

7 0

3 years ago

Read 2 more answers

The sample space of a random experiment is {a, b, c, d, e} with probabilities 0.1, 0.1, 0.2, 0.4, and 0.2 respectively. Let A de

antoniya [11.8K]

Answer:

a) $P(A) =P(a)+P(b) +P(c)= 0.1+0.1+0.2 = 0.4$

b) $P(B) =P(c) +P(d)+P(e)=0.2+0.4+0.2=0.8$

c) $P(A') = 1-P(A) =1-0.4=0.6$

d) $P(A \cup B) =0.4 +0.8-0.2 =1.0$

e) The intersection between the set A and B is the element c so then we have this:

$P(A \cap B) = P(c) =0.2$

Step-by-step explanation:

We have the following space provided:

$S= [a,b,c,d,e]$

With the following probabilities:

$P(a) =0.1, P(b)=0.1, P(c) =0.2, P(d)=0.4, P(e)=0.2$

And we define the following events:

A= [a,b,c], B=[c,d,e]

For this case we can find the individual probabilities for A and B like this:

$P(A) = 0.1+0.1+0.2 = 0.4$

$P(B) =0.2+0.4+0.2=0.8$

Determine:

a. P(A)

$P(A) =P(a)+P(b) +P(c)= 0.1+0.1+0.2 = 0.4$

b. P(B)

$P(B) =P(c) +P(d)+P(e)=0.2+0.4+0.2=0.8$

c. P(A’)

From definition of complement we have this:

$P(A') = 1-P(A) =1-0.4=0.6$

d. P(AUB)

Using the total law of probability we got:

$P(A \cup B) =P(A) +P(B)-P(A \cap B)$

For this case $P(A \cap B) = P(c) =0.2$ , so if we replace we got:

$P(A \cup B) =0.4 +0.8-0.2 =1.0$

e. P(AnB)

The intersection between the set A and B is the element c so then we have this:

$P(A \cap B) = P(c) =0.2$

8 0

3 years ago

Use the Square Root Method to solve for "X".<br><br>x^2 = 36

Sphinxa [80]

Answer:

take square root of both sides. √x^2 = x √36= 6

Step-by-step explanation:

x=6

5 0

3 years ago

Read 2 more answers

Please show me how to solve this equation step by step!<br> 1/25(20-t)=4/25t-3/5

rjkz [21]

Remark

Multiply both sides of the equation by 25. Then you have an equation that you have already done probably.

Step One

Multiply both sides of the equation by 25

1 * (20 - t) = 4t - (3/5) * 25 Every part of the equation must be multiplied by 25

(20 - t) = 4t - 75/5 3*25/5 = 75/5

20 - t = 4t - 15 Add t to both sides

20 - t + t =4t + t - 15 Combine like terms

20 = 5t - 15 Add 15 to both sides

20 + 15 = 5t - 15 + 15 Combine like terms

35 = 5t Divide by 5

35/5 = 5t/5 Switch sides

t = 7 Answer

5 0

3 years ago