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VARVARA [1.3K]
3 years ago
12

HELP FAST PLEASE!!!!!!

Mathematics
1 answer:
Elodia [21]3 years ago
5 0
1. Not random. Because you are asking people if they like ICE CREAM in a         ICE CREAM shop. 
2. Not random. Because they are serving a small controlled group.
3. Not  random. Because you go shopping at Publix because you like it. 
4. Random. Because you don't choose who is home or not.
You might be interested in
8. From the top of a mountain to the floor of the valley below is 4,392 feet. If the valley is 93 feet below sea level, what is
podryga [215]

Answer:

The answer is 4,299

Step-by-step explanation:

The reason why is because elevation goes off of the ocean so if the valley 93 feet below sea level then all you do is subtract 93 from $4,392.

3 0
4 years ago
A number is chosen at random from 1 to 50. Find the probability of selecting either a multiple of 4 or a multiple of 5.
anygoal [31]
A multiple of 4 is a 12/50 chance and a multiple of 5 is a 10/50 chance or simplified 1/5 chance
6 0
3 years ago
Read 2 more answers
60=F(15) <br><br> Please solve this and show work, please
Lubov Fominskaja [6]

Answer:

f = 4

Step-by-step explanation:

60= 15f

divide both side by 15

f = 4

3 0
3 years ago
If x=7+root 40 ,find the value of root x+1by the root of x​
Luda [366]

Chapter : Algebra

Study : Math in Junior high school

x = 7 + √40

find √x of √x + 1

= √x + 1

= √(7+√40) + 1

in Formula is :

= √7+√40 = √x + √y

= (√7+√40)² = (√x + √y)²

= 7+√40 = x + 2√xy + y

= 7 + √40 = x + y + 2√xy

→ 7 = x + y → y = 7 - x ... Equation 1

→ √40 = 2√xy → √40 = 2.2√10 = 4√10

= xy = 10 ... Equation 2

substitution Equation 1 to 2 :

= xy = 10

= x(7-x) = 10

= 7x - x² = 10

= x² - 7x + 10 = 0

= (x - 5)(x - 2) = 0

= x = 5 or x = 2

Subsitution x = 5 and x = 2, to equation 1

#For x = 5

= y = 7 - x

= y = 7 - (5)

= y = 2

#For x = 2

= y = 7 - x

= y = 7 - (2)

= y = 5

and his x and y was find :

#Equation 1 :

= x = 5 and y = 2

#Equation 2 :

= x = 2 and y = 5

So that :

√7+√40 = √x + √y

= √7+√40 = √2 + √5

And that is answer of question :

= √2 + √5 + 1

3 0
3 years ago
6x+4=5x-6 what is the solution for it
Oksi-84 [34.3K]

Answer:

x=-10

Step-by-step explanation:

6x+4=5x-6

Subtract 5x from each side

6x-5x+4=5x-5x-6

x +4 = -6

subtract 4 from each side

x+4-4 = -6-4

x=-10

8 0
3 years ago
Read 2 more answers
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