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MA_775_DIABLO [31]
2 years ago
12

Can someone explain why this is correct please!!! help I have a 1hr !!

Mathematics
1 answer:
Anastaziya [24]2 years ago
5 0

Step-by-step explanation:

Domain = {5,x}

Range = {-2, y}

For being a function, one domain cannot have more than one range.

If x=5, then y will be the range for x=5. But 5 already has a range -2 in (5,-2). So, x can be any real number except 5 and y can be any real number

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What is the value of x in the equation 3x - 4 (2x - 5) = 15
Zepler [3.9K]

Hey there! I'm happy to help!

Here is our equation

3x - 4 (2x - 5) = 15

First, we will sue the distributive property to remove the parentheses. The term outside the parentheses is -4, so that is what we multiply the insides by.

3x-8x+20=15

We combine our like terms (our x-values).

-5x+20=15

We subtract 20 from both sides.

-5x=-5

We divide both sides by -5.

x=1

Have a wonderful day and keep on learning! :D

3 0
3 years ago
Read 2 more answers
According to a survey conducted by Deloitte in 2017, 0.46 of U.S. smartphone owners have made an effort to limit their phone use
Alexxandr [17]

Answer:

44.16 ; 4.88

Step-by-step explanation:

Recall :

Mean, μ = np

Sample size, n = 96

Sample proportion, p = 0.46

For the mean :

Mean, μ = 96 * 0.46

0.46 * 96 = 44.16

The standard deviation :

σ = √npq

q = 1 - p = 1 - 0.46 = 0.54

σ = √npq = √(96 * 0.46 * 0.54)

σ = √23.8464

σ = 4.88

7 0
3 years ago
Use mental math to find the sum. <br><br> 150 + 20 + 25
stiv31 [10]

Answer:


50 + 20 = 70
70 + 25 = 95
150 + 95 = 245

In conclusion, 150 + 20 + 25 equals to a total amount of 215.


Step-by-step explanation:

Have a great rest of your day
#TheWizzer

6 0
2 years ago
Read 2 more answers
Members of a lacrosse team raised $1352.50 to go to a tournament. They rented a bus for $802.50 and budgeted $25 per player for
Alecsey [184]

Answer: 22

Step-by-step explanation:

From the question the, we are informed that members of a lacrosse team raised $1352.50 to go to a tournament and that they rented a bus for $802.50 and budgeted $25 per player for meals.

The equation which can be used to determine p, the number of players the team can bring to the tournament would be calculated as:

802.50 + 25p = 1352.50

25p = 1352.50 - 802.50

25p = 550

p = 550/25

p = 22

They can bring 22 players to the tournament

3 0
3 years ago
Read 2 more answers
Sam and Bethan share £54 in the ratio 5:4. how much will each person get
Sunny_sXe [5.5K]
Given :- 
sam and Bethan shareare in the ratio 5:4 respectively. 
 Total no of money is = 54ÂŁ 
 Solution :-
 Let Sams share is be x ie = 5 
 Let Bethans share be y ie = 4
 Total no of share is = 9
 Therefore the persons share is (particular persons share / total no of share) *
total value of money 
 Ans : -
 Therefore sams share x is = (5/9)* 54 =30ÂŁ
 Therefore Bethans share y is = (4/9) * 54 = 24ÂŁ
5 0
2 years ago
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